Yes, At Standard Temperature and Pressure (STP), 1 mole of any gas will occupy a volume of 22.4 L.
At STP, one mole (6.02×1023 representative particles) of any gas occupies a volume of 22.4L, A mole of any gas occupies 22.4L at standard temperature and pressure (0oC and 1atm).
At STP:
The standard temperature is equal to: 273.15 K = 0°C = 32°F
The standard pressure is equal to: 1 atm = 760 Torr = 760 mm Hg = 101.35 kPa.
1 mol of ideal gas in these conditions has a volume of 22.4 Liters.
The question is incomplete, complete question is
Does 1 mole of gas always occupy 22.4 liters?
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How do you predict bond shape?
By analyzing the number of electron pairs to ascertain the shape of the molecules, the VSEPR-predicted forms of molecules can be found in a methodical manner.
Draw out the molecule's Lewis structure before attempting to determine the shape of the molecules. Find the center atom on the Lewis diagram. Phosphorus serves as the primary atom in this molecule (P).
Simply look at the group the central atom of phosphorus is in to determine how many electrons are on its outer shell. The group number corresponds to the number of electrons on the outer shell of the central atom. Since phosphorus belongs to group 5, its outer shell contains five electrons.
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What is the volume of 32 gram of gas at STP?
35 liters is the volume of 32 gram of gas at STP
It is already known that 1 mole of the gas( or 32g of O2) is equivalent to 22.4 Litres of the oxygen gas.
So, 8g is equivalent to = (22.4/32) × 8 = 5.6 L of the gas.
Therefore, the gram equivalent volume of oxygen is 5.6L
O is 16g/mole, so O2 is 32g/mole. 50/32 = 1.5625 moles.
1 mole of any gas at STP is 22.4 liters.
1.5625 × 22.4 = 35 liters.
35 liters is the volume of 32 gram of gas at STP
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A student has two substances at a lab table. One substance is iron pyrite (fool's gold) and the other is real gold. After placing a 20. 0-gram sample of iron pyrite into 40. 0 ml of water in a graduated cylinder, it displaces 4. 0 ml of water. The density of real gold is almost 4 times larger than iron pyrite. If a 20. 0-gram sample of real gold is placed into the same amount of water, approximately how much water will be displaced?.
The amount of water displaced by a 20.0-gram sample of real gold is 1.0 ml.
Water displacement is a process in which an object is placed in a container of water and the water level rises due to the object displacing the water. The amount of water displaced is equal to the volume of the object.
Calculate the density of iron pyrite.
Density of iron pyrite = Mass of sample ÷ Volume of water displaced
= 20.0 g ÷ 4.0 ml
= 5.0 g/ml
Calculate the density of real gold.
Density of real gold = 4 × 5.0 g/ml
= 20.0 g/ml
Calculate the amount of water displaced by a 20.0-gram sample of real gold.
Volume of water displaced by real gold = Mass of sample ÷ Density
= 20.0 g ÷ 20.0 g/ml
= 1.0 ml
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Identify the possible dangers to passengers inside a car during a car accident. Use Newtons first law of motion to explain your answer.
Explanation:
here is the answer
an object with motion will stay with the same amount of speed and in the direction unless it is intervened by an unbalanced force
what it is trying to say is that passages will probably stopped bc of the seatbelt or something gets in the way
hopefully this helps
The electronegativities of the period-3 elements are listed on the transparency. Calculate the
electronegativity differences for the following pairs of bonded period-3 atoms.
d. Si and Cl _______________________
b. Mg and S_1.31. And 2.58=
e. Si and S ________________________
c. Al and P ______________________
Here is the electronegativity difference of bonded period 3 atoms.
What is electronegativity?Electronegativity, is the symbolized as χ, it is the tendency to an atom of to a given chemical element to be attract shared electrons and when forming of a chemical bond. An atom's is electronegativity is affected by the both its atomic number .and it is
The electronegativity for period -3 atoms
Si and cl is - Electronegativity Difference is 0.7
Polarity-δ+Si−δ−C
For mg electronegativity difference is 1.3
For si and s electronegativity difference is 1.7
For AI and p the electronegativity difference is 1.6 and 2.9 respectively.
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how many bicarbonate is reacted with concentrated hydrochloric acid at 37.0c and 1.00 atm. the reaction of 6.00 kg of bicarbonate with excess hydrochloric acid under these conditions will produce l of co2
The amount of CO2 produced by reaction with 6 kg of bicarbonate with excess hydrochloric acid is 1837.89 L.
This situation's chemical reaction is NaHCO3 + HCl NaCL + H2O + CO2 (g).
M 84 g/mol NaHCO3
44 g/mol for M CO2
As we have 6.00 kg of sodium bicarbonate, 6 kg of sodium carbonate equals 71.43 kg of sodium carbonate.
Because of the chemical reaction's stoichiometry:
71.43 moles of NaHCO3 are equal to 71.43 moles of CO2, and vice versa.
Additionally, since CO2 is an ideal gas, we can apply the formula shown below:
PV=nRT where n = 71.43 mol, R = 0.083 Ltxatm, and
V = (nRT)/P (mol K)
T = 37 °C, K = 310, and atm = 1
This means that V = (71.43x0.083x310)/1 V
CO2 = 1837.89 Lt.
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What traits help urchins survive?
The spines spear food and protect an urchin from predators.
From the skull base to the tailbone, there are bones, muscles, tendons, and other tissues. The fluid around the spinal cord and the spinal cord itself are enclosed by the spine. known by the names vertebral column, spinal column, and backbone. a strong, slender, sharp-pointed structure that resembles a modified leaf or stipule (a stipule is an appendage located at the base of a petiole, or at the base of a leaf's stalk). A pointy growth from the skin or bark is referred to as a. Thorns are modified stems that are stiff, woody, and have a sharp point. Cervical, thoracic, and lumbar spines are the three primary segments of the spine. Seven vertebrae make up the cervical, which is the top portion of the spine (bones). Centered in the body is the thoracic.
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which complex is capable of forming geometric isomers? group of answer choices [co(nh3)6]br3 [pt(nh3)4]br2 [pd(nh3)2br2] [co(nh3)5br]br2 k3[fecl6]
The (pd(NH₃)₂ Br₂ ) it shows Cis- isomer and Trans-isomer.
What is isomer ?
Isomers are substances that have exactly the same number of atoms, i.e., the identical empirical formula, but differ from one another in terms of how the atoms are ordered.
What is geometric ?
The three-dimensional arrangement of atoms in a molecule is known as molecular geometry, sometimes known as the molecular structure. Understanding a compound's molecular structure can be useful for figuring out its polarity, reactivity, phase of matter, color, magnetism, and biological activity.
Mₐ₂ᵇ₂ type complex shows geometrical isomerism, complexes of this type exists as cis-isomerism and trans- isomers.
Among the given complexes, (pd(NH₃)₂ Br₂ ) also geometrical isomers.
H₃N Br H₃N Br
Pd Pd
H₃N Br Br H₃N
Cis- isomer Trans- isomer
Therefore, (pd(NH₃)₂ Br₂ ) it shows Cis- isomer and Trans-isomer.
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which is not a property of an ideal gas? a) consists of point particles b) can pass through walls c) there are no attractive/repulsive forces d) all of the above are properties of ideal gases e) none of the above are properties of ideal gases
Answer: i think its E, but please do not quote me on that; that was 11 lessons ago for me
Explanation:
what is the molarity of an aqueous solution prepared by dissolving 25.0 grams of na2so4 in enough water to form 500 ml of solution? molar mass(na2so4)
The molarity of an aqueous solution is found to be 0.352 mol/L.
What is molarity?
Molarity is a unit of concentration that is commonly used in chemistry, and it is defined as the number of moles of solute per liter of solution. It is symbolized by the letter "M" and is used to measure the amount of a solute that is present in a solution. Molarity is an important concept in chemistry, and it can be used to calculate the amount of a substance that needs to be added to a solution to reach a set concentration, as well as to figure out the amount of a substance that is already present in a solution. Molarity is also used to measure the concentration of acids and bases, as well as to determine the rate of chemical reactions.
No. of moles =25/ 142.05 =0.176
given volume of solution = 500mL
M= (0.176/500) × 100= 0.352 mol/L
Hence, Molarity is 0.352 mol/L.
For detailed solution check attached file.
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Are x-rays physical mutagens?
X-rays are indeed physical mutagens. X-rays and UV radiation are physical mutagens. 2 Cosmic rays, gamma rays, and X-rays are all types of ionizing radiation.
That cause the cell's water to ionize and generate hydroxyl free radicals. Radiation that is not ionizing is UV light. Thymine dimer is produced as a result (Pyrimidine dimer). When DNA replication goes wrong, mutations can sometimes happen on their own. However, the likelihood of mutation is increased by mutagens. The three different types of mutagens. X-rays and UV radiation are physical mutagens. Ionizing radiation such as X-rays, gamma rays, and cosmic rays causes the release of the hydroxyl free radical by ionizing the cell's water (OH). Ionizing radiation, also known as ionizing radiation, is made up of subatomic particles or electromagnetic waves with enough energy to ionize atoms and molecules by severing their electron bonds. This type of radiation includes nuclear radiation.
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Arrange the boiling points of the aqueous solutions, relative to pure water: Assume complete dissociation for the ionic compounds. Highest boiling point 0.38 m CzHs OH 0.32 m NH; 0.19 Naz SO4 0.11 m NaCl HzO Lowest boiling point
The boiling points of aqueous solutions based on pure water are as follows, in descending order of boiling points:
0.38mCzHsOH - Highest boiling point0.32mNH40.19m Na2SO40.11m NaClH2O (pure water) -Lowest boiling pointThe boiling point of a solution increases as the concentration of the solute (dissolved substance) increases. The presence of ions and other dissolved particles in solution increases the vapor pressure of the solvent (water in this case), requiring more energy to reach its boiling point.
Ionic compounds such as NaCl and Na2SO4 completely dissociate into ions when dissolved in water, and thus have a greater impact on boiling points than non-ionic compounds such as CzHsOH.
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when the reaction is complete, the temperature of the solution and the calorimeter is 40.29 oc. what is the enthalpy of the reaction in units of kj/mole of a?
The enthalpy of the reaction in kj/mole of the solution is 76.51476 Kj/mole.
What is enthalpy of the reaction?The amount of heat generated or absorbed in a chemical reaction when the number of moles of the reactants represented by the chemical formula are completely reacted is called the reaction enthalpy. It is expressed as ΔrH.
The change in enthalpy associated with a chemical reaction is called reaction enthalpy, abbreviated ΔH_rxn. The value of ΔH_rxn depends on how the reaction equilibrium equation is written and is usually given in units of kJ/mol-rxn.
The heat of reaction is also called the reaction enthalpy.
For the given problem:
1°C = 1.8991 Kj
40.29°C = 1 × 1.8991
= 76.51476 Kj
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Element x decays radioactively with a half life of 13 minutes. If there are 860 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 152 grams?.
11.7 minutes is the time, rounded to the nearest tenth of a minute, that it will take 860 grams of element x to decay to 152 grams, given that it decays radioactively with a half-life of 13 minutes.
Procedure for calculating disintegration timeTo determine the time it will take a radioactive substance to disintegrate, the concept of disintegration velocity (Vt) is used, which means the number of atoms that disintegrate in a given time.
So the radioactive constant = 1/t
= 1/8 min = 0.125 min−1
The decay rate of the nuclei depends on the mass that remains undisintegrated, m, so that the initial mass decreases according to the law of radioactive decay:
m = mo . e∧-λ.t
where
mo = initial undisintegrated mass
t = elapsed time
λ = radioactive decay constant (probability of disintegrating a nucleus in unit time)
Calculation of disintegration timeData
m = 152g
mo = 860g
λ = 0.125 min−1
m = mo . e∧-λ.t
clearing t
t = - ln λ . mo/m
t = - ln 0.125 . 860/152
t = 2.07 x 860 / 152
t = 11.71 min
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a sample of gas weighs 3.33 g and occupies a volume of 1.365 l at 95 °c and 790 torr. identify the gas sample.A. Cl₂ (molar mass-70.90 g/mol)B. NH (molar mass- 17.03 g/mol)C. N₂0 molar mass-44.02 g/mol)D. CHC, (molar mass-119.4 g/mol)E. SO₂ (molar mass - 64.07 g/mol)
The sample of gas that will be in the container is CL2(chlorine)(molar mass= 70.90g/mol).
what is the ideal gas law?The phrase "ideal gas" refers to a fictitious gas made up of molecules that abide by a few guidelines: Perfect gas particles do not contact or repel one another. The sole interaction between molecules of an ideal gas would be an elasticity collision when they collided or an elasticity collision with the container walls.
Briefing:
By ideal gas law, PV=nRT,
where p= pressure of the gas
V= volume occupied by the gas,
R= gas constant
T= temperature of the gas
n= no.of moles of gas
given, the mass of gas=3.33 g
the volume of gas= 1.365ltr
temp of gas= 95 c = 95+273.15 =368.15 k
pressure= 790 torr= 790/760= 1.03 atm
R= 0.0820 l atm k^-1 mol ^-1
n=PV/RT
by solving, n=0.04699
MOLAR MASS= GIVEN MASS/n
so, the molar mass will come out to 70.90 g/ mol
so gas will CI2.
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What elements does bromine not react with?
Determine whether each statement describes an anode or a cathode in a voltaic cell.
a. positive terminal
b. where oxidation occurs
c. where reduction occurs
d. where electrons flow to
e. negative terminal
f. where electrons flow from
positive terminal -anode
where oxidation occurs-anode
where reduction occurs-cathode
where electrons flow to-cathode
negative terminal-cathode
where electrons flow from-anode
what is cathode and anode?
The electrode that electricity flows into is known as the anode.The positive side is typically the anode.It serves as an electron source.The anode of an electrolytic cell experiences an oxidation reaction.An anode in galvanic cells can change into a cathode.The cathode is the electrode from which current is discharged or given off.A cathode is a negative sideAs an electron acceptor, it functions.The cathode of an electrolytic cell experiences a reduction reaction.A cathode can switch to an anode in galvanic cells.To learn more about anode https://brainly.com/question/17109743
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What do you notice about the ions of those elements in the same column or group on the periodic table?
The ions of those elements in the same column or group on the periodic table form the ions of the same charge and have the same number of the valence electrons.
The elements that present in the same column or the group on the periodic table have the same number of the valence electrons. the element present in the same column also form the ions of the same charge. the elements of the same group in the periodic table have the same chemical properties.
Thus, the element which place in the same group in the periodic table will form ions of the same charge.
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why do hydrogen atoms form only single bonds with other atoms and not double or triple bonds like carbon atoms? answer: 2. what effect do double and triple bonds have on rotation within molecules compared to single bonds? answer: g
Because they only have one valence electron to pair, hydrogen atoms can only form one covalent bond.
Double and triple bonds can't rotate because of their pi bonds. This stiffness affects the physical makeup of compounds and may have an impact on their chemical reactivity.
1.Two hydrogen atoms, each of which contains a single electron in its valence shell, can be used to demonstrate this idea. The first shell, which has just two electrons, serves as the valence shell for tiny atoms like hydrogen atoms.
However, when two hydrogen atoms are close enough to one another, they can share their valence electrons, which results in both hydrogen atoms having two electrons in their respective valence shells. Covalent bonds are formed when atoms share electrons, and the two electrons that form these bonds are referred to as bonding pairs of electrons. A molecule is the smallest component of a compound that retains the chemical identity of that compound and is defined as a discrete group of atoms joined by covalent bonds.
2. When it comes to reactions, we will discover that a system is often more stable when a double bond is replaced by two single bonds. Second, the presence of a double bond prevents rotation while there is essentially free rotation around the axis of a single bond.
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Why would a road crew choose calcium chloride over regular road salt?
The fact that it can function at significantly lower temperatures than rock salt is one of its most evident benefits and that's why road crew choose calcium chloride over regular road salt.
Savings: Calcium chloride improves the efficiency of salt, requiring fewer applications of it during storms, resulting in a reduction in labor, equipment, and material expenses. Additionally, it freeze-proofs abrasives to aid in their integration into ice and snow, minimizing material loss due to spreader bounce and traffic dispersing.
Calcium chloride is exothermic, releasing heat to cause salt to melt.
Calcium chloride is hygroscopic, attracting the moisture that rock salt needs to dissolve.
Rapidly acting: When calcium chloride is applied on ice on the pavement, it starts to disintegrate right away.
Low eutectic point: Salt melts at significantly higher temperatures than calcium chloride does.
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rxn: phosphorus reacts with bromine to form phosphorus tribromide. if 35.0 grams of bromine are reacted and 27.9 grams of phosphorus tribromide are formed, what is the percent yield?
The percent yield of phosphorus tribromide is 70.63%.
What is phosphorus tribromide?
A whitish fuming liquid with a strong smell is what phosphorus tribromide looks like. Due to hydrolysis, the liquid releases Oduor-piercing gases into damp air. Alcohols are transformed into alkyl bromides using it in a lab setting.
Red phosphorus is subjected to bromine treatment to produce PBr3. In order to inhibit the development of PBr5, too much phosphorus is used:
PBr3 = 2 P + 3 Br2.
Due to the reaction's strong exothermic nature, a diluent like PBr3 is frequently present.
35.0g Br2÷1 ×1mole Br2÷159.808 × 2moles of PBr3÷3moles of Br2× 270.686 gPBr3÷1mole of PBr3
= 39.5 gg PBr3
% yield= 27.9ggPBr3÷39.5ggPBr3×100
= 70.63%
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During an investigation, you look at two photos taken of highly magnified items. The first photo shows an amoeba. The other slide shows the cross-section of a maple leaf. What do these two items have in common?
Maple leaf and amoeba are both eukaryotic cells and show presence of true nucleus in them.
What are eukaryotic cells?Eukaryotic cells are the cells which show presence of nucleus and possess membrane bound organelles.They may be unicellular or multicellular depending on the number of cells present in them.
In eukaryotes , the genetic material is is stored within an organelle which is called as nucleus wherein it is organized in to long molecules which are called as chromosomes.They possess other organelles like mitochondria which are responsible for generation of energy . Endoplasmic reticulum which helps in transport of proteins .
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How many milliliters of hydrogen gas are produced by the reaction 0. 020 mol of magnesium with excess of hydrochloric acid at stp? make sure to use the correct number of significant digits. 0. 448 ml 0. 45 ml 448 ml 450 ml.
The millimeters of hydrogen gas that are produced are 448 mL which means option c is the correct choice.
The reaction of magnesium and hydrochloric acid is a single displacement reaction. The reaction is expressed as follows:
Mg + 2HCl= MgCl2 + H2.
There is a one is to one correspondence of Mg and H2. Hence there is also 0.02 mol of H2.
Using ideal gas law equation which states that pressure and volume are in direct relation to the temperature.
PV=nRT
where T is 273 K, P is 1 atm and R is 0.0821 L atm/mol K, volume is equal to 0.4483 L or 448.3 mL.
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What is one of the products in Reaction A
Answer: there is nothing to see
Explanation: there is nothing currently nothing to see so nobody can solve it
devise a synthetic sequence for the synthesis of 2,2‑dibromobutane using the list of reagents available. select the best reagent for each step.
Butene is converted to 1,2-dibromo butane via the indicated process. This serves as an illustration of a halogenation reaction. By combining butene plus Br2 in dichloromethaneBr2, CH2Cl2, it is possible.
What exactly does "halogenation reaction" mean?When a halogen atom is replaced by another material and becomes a component of that material or a compound, the process is referred to as halogenation. A halogen or more are typically added to the material during the halogenation reaction.
What causes halogenation, exactly?Chain initiation, chain expansion, and chain termination are the three phases that make up the halogenation mechanism. The whole solution, in steps: Haloalkane is created by combining an appropriate halogen with alkane and either heating the mixture was heated to 520–670 K or doing so while the reaction is exposed to UV light.
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meditation and relaxation combined form the ________, which has been used effectively to treat those with high blood pressure.
Meditation and and relaxation combined form the relaxation response techniques which have been used effectively to treat those with high blood pressure which is related to heart.
What is heart?
Heart is a muscular organ which is present in most of the animals , it is responsible for pumping blood via the blood vessels to the entire body.The blood which is pumped carries oxygen and nutrients along with it.Along with it on it's way back to heart it carries carbon dioxide to the lungs.
Heart has an approximate size of a closed fist and is present between the lungs in the middle compartment of the chest. It is divided in to four chambers , the upper chambers called atria and lower ones called ventricles.
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what are the variables held constant if my science project is if the temperature going to fight the bonds of
Variables are those things that alter during a scientific experiment.
What is Temperature?
The term "temperature" refers to a measurement of an item's average kinetic energy, which is a category of energy linked to motion and used to describe how hot or cold an object .
Hot and cool are not really scientific concepts. We must utilise temperature if we truly want to describe how hot or cold something is.
It is less confusing to use temperature instead of phrases like hot or cold.
In order to achieve this, they conduct experiments to look for cause and effect connections. Cause and effect linkages give reasons for events and make it possible to accurately forecast how something will turn out. To determine if changes to one item result in recurrent variations in another, scientists utilize the scientific method to construct an experiment.
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hydrogen, when combined with oxygen in a chemical reaction, forms water. this is an example of which type of chemical reaction?
Hydrogen, when combined with oxygen in a chemical reaction, forms water. this is an example of Combination reaction.
A chemical reaction is a process in which one or more substances, which are also called reactants, are generally converted to one or more different substances, that are known as the products. Substances formed are either chemical elements or compounds.
A chemical reaction usually rearranges the constituent atoms of the reactants to create different substances as products. The properties of the products are generally different from those of the reactants.
Formation of water from hydrogen and oxygen is a combination reaction because hydrogen and oxygen are combining to form one single product.
A combination reaction is a reaction in which two or more substances combine to form a single new substance. Combination reactions can also be called as the synthesis reactions. The general form of a combination reaction is: A+B→AB. One combination reaction is two elements combining to form a compound.
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Which of these ions is more abundant in the interior of resting neuron that in the fluid surrounding the neuron?
A. Cl-
B. Ca++
C. Na+
D. K+
When a neuron is at rest, its inside contains more K+ ions than its surrounding fluid.
The correct answer is D
Do neurons count as brain cells?Glial cells and neurons are the two main categories of brain tissue. The majority of brain cells, or neurons, are glial cells, which predominate in some parts of the brain while nevertheless playing a significant function.
What are neurons' primary purposes?The nerve cells that make up your brain, called neurons, transmit and receive signals. The anatomical and functional differences between neurons and other kinds of cells outweigh their many similarities. Axons, specialized projections that carry electrical and chemical impulses to other cells, are used by neurons.
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What needs to be known to determine the critical values for an independent-samples t test?
- the sample size of the power analysis
- degrees of freedom for the smallest group
- total degrees of freedom
- degrees of freedom for the largest group
The critical value for an independent-samples t-test is total degrees of freedom. Option C.
Each topic must belong to only one group. There is no relationship between observations in each group. There are no significant outliers in the two groups. The independent-sample t-test is appropriate when the researcher wants to know whether the means of her two population groups differ.
Independent samples t-test tells whether the organization has a statistical difference between her two sets of categories or items, and if there is a statistical difference, the difference is significant. when the observations in each group are independent of the observations in the other group increase.
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