Answer:
stream
Explanation:
because a stream goes into a lake
Answer:
D) Stream
Explanation:
word equation for Na2O+H2O → NaOH
Answer:
Sodium oxide + Water - - - > Sodium Hydroxide.
How many moles of carbon dioxide are produced when 5.12 moles of glucose undergoes a combustion reaction?
Answer: 30.72 moles of [tex]CO_2[/tex] will be produced from 5.12 moles of glucose.
Explanation:
The balanced chemical equation for combustion of glucose is:
[tex]C_6H_{12}O_6+6O_2\rightarrow 6CO_2+6H_2O[/tex]
According to stoichiometry :
1 moles of glucose produce = 6 moles of [tex]CO_2[/tex]
Thus 5.12 moles of glucose produce =[tex]\frac{6}{1}\times 5.12=30.72moles[/tex] of [tex]CO_2[/tex]
Thus 30.72 moles of [tex]CO_2[/tex] will be produced from 5.12 moles of glucose.
Please help me on this.
If ONE mole of rocket fuel, ammonium perchlorate, NH4ClO4, is allowed to react with excess Al so that all of the NH4ClO4 is consumed, how many molecules of water will be produced? (All reactants & products are present in a 1:1 ratio.)
Answer:
9.03×10²³ molecules of H₂O
Explanation:
To solve this, we need to propose the reaction
NH₄ClO₄ → ammonium perchlorate
Al → Aluminum
Those are the reactants; the reaction is:
6NH₄ClO₄ + 10Al → 5Al₂O₃ + 3N₂ + 6HCl + 9H₂O
Then, water is one of the products. If we see the reaction, is a redox type.
Ratio is 6:9. In conclussion:
6 moles of ammonium perchlorate can produce 9 moles of H₂O
Then 1 mol of salt, may produce (1 . 9)/6 = 1.5 moles of water
Let's count the molecules:
1.5 mol . 6.02×10²³ molecules /mol = 9.03×10²³ molecules of H₂O
what is a salient factor?
Answer:
technology is a silent factor
Explanation:
learned about it in computer class.
Which salt is the most common found in ocean water?
magnesium
calcium carbonate
potassium
sodium chloride
Answer:
Sodium chloride
Explanation:
There are several salts in seawater, but the most abundant is ordinary table salt or sodium chloride (NaCl). Sodium chloride, like other salts, dissolves in water into its ions, so this is really a question about which ions are present in the greatest concentration. Sodium chloride dissociates into Na+ and Cl- ions.
2. Hydrocarbons consist of carbon and hydrogen. 5.7 g of a hydrocarbon contains 4.8 g of carbon.
If the relative molecular mass of the hydrocarbon is 114, determine its molecular formula.
Answer:
The molecular formula of the hydrocarbon compound is C₈H₁₈
Explanation:
The type of chemical substance in the question = Hydrocarbon
The mass of the hydrocarbon = 5.7 g
The mass of carbon in the given hydrocarbon (sample) = 4.8 g
The relative molecular mas of the hydrocarbon = 114 g
Therefore, the mass of hydrogen in the sample, H = 5.7 g - 4.8 g = 0.9 g
The ratio of the mass of carbon in the sample = 4.8/5.7
The ratio of the mass of hydrogen in the sample = 0.9/5.7
By the law of constant composition, we have;
The mass of carbon in a mole of the hydrocarbon = (4.8/5.7) × 114 g = 96 g
The molar mass of carbon, C = 12 g/mol
The number of moles of carbon in a mole of the hydrocarbon, 'n₁', is given as follows;
n₁ = 96 g/12 g = 8 moles
The mass of hydrogen in a mole of the hydrocarbon = (0.9/5.7) × 114 g = 18 g
The molar mass of hydrogen, H ≈ 1 g/mol
The number of moles of hydrogen in a mole of the hydrocarbon, 'n₂', is given as follows;
n₂ = 48 g/1 g = 18 moles
Therefore, in each each molecule of the compound, we have have 8 atoms of carbon, 'C', and 18 atoms of hydrogen, 'H'
Therefore, we get;
The molecular formula of the hydrocarbon compound is C₈H₁₈ which is the chemical formula for the hydrocarbon also known as octane
in____particles are in contact with each other.
Answer:liquid
Explanation:
The particles in a liquid usually are still touching but there are some spaces between them. The gas particles have big distances between them.
What is the correct formula for sodium carbonate?
a. Na(CO3)2
b. Na,(CO3)2
C. Na2CO3
Naz(CO)2
e. NaCO3
d.
a
a
b
b
ΟΟΟΟΟ
С
С
d
d
е
e
Answer:
na2 co3
Explanation:
sodium carbonate formula
Answer:
your answer is C.
Explanation:
this is what it would be like
O
|
|
Na+ C Na+
/ \
/ \
O- O-
How many significant digits are in this number?
742800
1.6
2.5
3.4
4.3
100 grams of liquid iron is put in liquid water when is equilibrium reached
Answer:
when the water heats up i believe
Explanation:
b
A tank 20.0cm by 50.0cm by 30.0cm will hold how many liters of water?
Answer:
30,000 cm^3
Explanation:
volume for rectangular prism is v=l×w×h
plug in known values and solve.
v=(30.0cm)(20.0cm)(50.0cm)=30,000cm^3
How many grams of Sulfur are there in 2.05 x 10^25 molecules of Calcium Sulfate?
Answer:
1090 grams Sulfur (3 sig-figs)
Explanation:
Given 2.05 x 10²⁵ molecules CaSO₄ => 2.05 x 10²⁵ Sulfur atoms (subscript = 1 mole).
Converting 2.05 x 10²⁵ sulfur atoms to moles, divide by Avogadro's Number
(= 6.023 x 10²³ sulfur atoms / mole sulfur) => 2.05 x 10²⁵ sulfur atoms/6.023 x 10²³ sulfur atoms/mole sulfur atoms = 34.036 moles sulfur atoms.
Converting 34.036 moles sulfur to grams sulfur multiply by formula wt. of sulfur (=32g/mole S)
=> 34.036moles S x 32g/mole S = 1089.158 grams S ≅ 1090 g S (3 sig-figs)
PLS HELP URGENT
Electron dot diagrams
Use your periodic table to write the electron dot diagrams for the following atoms.
1. Calcium (Ca)
2. Polonium (Po)
3. Moscovium (Mc)
4. Boron (B)
5. Fluorine (F)
Which condition would cause an increase in the salinity of ocean water?
thawing of glaciers
high rates of evaporation
cold weather
a river flowing into the sea
Answer:
high rates of evaporation
which of the following has more particles
6.02x10(small numbers)23 molecules CO2
9 moles PF2
10 mole NaCI
18 g H2O
Answer:
A mole is Avogadro's number of items: 6.022 × 1023.
Explanation:
Which om sled below is amplo dl an abelis laeler in an evünment?
ban
B. droganty
C. ar temperatura
D. cation
Answer:
Explanation:
i got D
Can you bond 2 silicon atoms (Si) together to form a complete (real) molecule? Explain your reasoning
Answer: no
Explanation: because silicon cannot share over 3 bonds
NH₄NO₃ → N₂O + 2H₂O When 45.70 g of NH₄NO₃ decomposes, what mass of each product is formed?
Answer: 25.13 g of [tex]N_2O[/tex] and 20.56 g of [tex]H_2O[/tex] will be produced from 45.70 g of [tex]NH_4NO_3[/tex]
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} NH_4NO_3=\frac{45.70g}{80.04g/mol}=0.571moles[/tex]
The balanced chemical equation is:
[tex]NH_4NO_3\rightarrow N_2O+2H_2O[/tex]
According to stoichiometry :
1 mole of [tex]NH_4NO_3[/tex] produce = 1 mole of [tex]N_2O[/tex]
Thus 0.571 moles of [tex]NH_4NO_3[/tex] will require=[tex]\frac{1}{1}\times 0.571=0.571moles[/tex] of [tex]N_2O[/tex]
Mass of [tex]N_2O=moles\times {\text {Molar mass}}=0.571moles\times 44.01g/mol=25.13g[/tex]
1 mole of [tex]NH_4NO_3[/tex] produce = 2 moles of [tex]H_2O[/tex]
Thus 0.571 moles of [tex]NH_4NO_3[/tex] will require=[tex]\frac{2}{1}\times 0.571=1.142moles[/tex] of [tex]H_2O[/tex]
Mass of [tex]H_2O=moles\times {\text {Molar mass}}=1.142moles\times 18g/mol=20.56g[/tex]
Thus 25.13 g of [tex]N_2O[/tex] and 20.56 g of [tex]H_2O[/tex] will be produced from 45.70 g of [tex]NH_4NO_3[/tex]
Is the reaction above a replacement reaction? Explain.
i really need help, this is important to me, if not i get my harry styles tickets taken away and if that happens my life is over lol, i’m not saying it for sympathy i just REALLY need help
Explanation:
First Question
Group 18 elements. This is because the noble elements do not conduct electricity.
Second Question
Chewing in the mouth breaks food into small pieces
Third Question
How many atoms of each element are present in the molecule?
7 carbon atoms, 14 Hydrogen atoms and 1 oxygen atom
The Moon is always half lit and half dark.
True or
False
(i know this isn’t chemistry theres no science one.)
Answer:
True
Explanation:
Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness.
Answer:
Pretty sure it's true.
On Earth, we only see part of the moon that is illuminated or not, since it revolves around the Earth. However, the sun is stationary and doesn't move, meaning that one side of the moon is always lit by the sun as it revolves around the Earth.
Please help pretty please
Answer: Its is a field generated by any two objects touching each other.
OR
Answer: Its is a field generated by any object with any mass.
Explanation: I AM SOOOO SORRY if i get it wrong i pretty sure the first one is right i mean like My first ansewr i typed in......... :/ :/
High-speed winds transfer more energy to the ocean’s surface, creating bigger waves.
Question 10 options:
True
False
Answer:
I think that would be true. The faster the wind, the longer it blows, or the farther it can blow uninterrupted, the bigger the waves. Therefore, a wave's size depends on wind speed, wind duration, and the area over which the wind is blowing
Answer: True.
Explanation: Yes, waves get energy from the wind through friction, so you see those waves get bigger each time. The longer the winds blows, the more friction, and energy it's getting, meaning better, and deadly waves. The wind can sometimes cause tsunamis if the its blowing too hard.
How many kilograms of water must be added to 6.07 grams of oxalic acid (H2C2O4) to make a 0.025 m solution?
word equation for HgO → Hg +O2
what the steps of Cellular Respiration in the correct order?
Answer:
Cellular respiration uses energy in glucose to make ATP. Aerobic (''oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. This results in a net gain of two ATP molecules.
how many liters are in 4x10^23 atoms of CO
Answer:
3.346*10^25
Explanation:
Hope this helps
When 10 grams of water completely evaporate into water vapor, the volume of the water vapor is greater than the volume of the original liquid water, but the mass remains the same. Why does the mass stay the same? Which answer is correct?
A
The temperature of the liquid water and water vapor is the same.
The temperature of the liquid water and water vapor is the same.
B
The density of the liquid water is the same as the density of the water vapor.
The density of the liquid water is the same as the density of the water vapor.
C
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.
D
The distance between the water molecules is the same in the liquid and the vapor.
The distance between the water molecules is the same in the liquid and the vapor.
Answer: I think the answer is B or C, its kind of hard.
As the number of atoms in the water vapor is equal to the number of atoms in the liquid water. Therefore, the mass of the water remains the same.
What is evaporation?Evaporation is a process that usually happens on the surface of water or liquid and it involves the conversion of the liquid phase into the gaseous phase. This process involves a change in the state of matter of water or liquids.
When the water is completely evaporated into water vapor the density of the water vapor is less than the density of the liquid water as the vapors occupy a large volume in comparison to liquid water.
But the number of atoms in the water vapor is the same as the number of atoms in the liquid water. The mass of the water is due to the mass of the atoms.
Therefore, the mass of the water remains the same during the phase transition from liquid water to water vapors. Therefore, option (C) is correct.
Learn more about evaporation, here:
https://brainly.com/question/5019199
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Which statement is not
true?
A. The troposphere is responsible for nearly
all of Earth’s weather.
B. The exosphere reaches deep into space
and is the least dense layer.
C. The thermosphere typically breaks up
meteors before they hit Earth.
D. The stratosphere allows commercial
airlines to fly with less turbulence because
of fewer convection currents.
The atmosphere of the earth is layered and each layer of the atmosphere has its own properties. The atmosphere of the earth is divided into four layers. The thermosphere typically breaks up meteors before they hit Earth is not correct. The correct option is C.
What is mesosphere?The four important layers of atmosphere are troposphere, stratosphere, thermosphere and mesosphere. The layer of the atmosphere which is found above the stratosphere is defined as the mesosphere. It is the coldest layer of the atmosphere.
A meteor is known as a celestial object which is made up of rocks and minerals which enters the atmosphere of the earth and burns out completely before reaching the surface of the earth. It is known as the shooting star or falling star.
The temperature of mesosphere drops with altitude. By 80 km it reaches 100 degree celsius. The meteors burn up in this layer not in thermosphere.
Thus the correct option is C.
To know more about earth layers, visit;
https://brainly.com/question/13497783
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