Please help me find the final answer
Answer:
5. The mass of Na₂CO₃, that will produce 5 g of CO₂ is approximately 12.04 grams of Na₂CO₃
6. The mass of nitrogen gas (N₂) that will react completely with 150 g of hydrogen (H₂) in the production of NH₃ is 693.[tex]\overline{3168}[/tex] grams of N₂
Explanation:
5. The given equation for the formation of carbon dioxide (CO₂) from sodium bicarbonate (Na₂CO₃) is presented as follows;
(Na₂CO₃) + 2HCl → 2NaCl + CO₂ + H₂O
One mole (105.99 g) of Na₂CO₃ produces 1 mole (44.01 g) of CO₂
The mass, 'x' g of Na₂CO₃, that will produce 5 g of CO₂ is given by the law of definite proportions as follows;
[tex]\dfrac{x \ g}{105.99 \ g} = \dfrac{5 \ g}{44.01 \ g}[/tex]
[tex]\therefore {x \ g} = \dfrac{5 \ g}{44.01 \ g} \times 105.99 \ g \approx 12.04 \ g[/tex]
The mass of Na₂CO₃, that will produce 5 g of CO₂, x ≈ 12.04 g
6. The chemical equation for the reaction is presented as follows;
N₂ + 3H₂ → 2NH₃
Therefore, one mole (28.01 g) of nitrogen gas, (N₂), reacts with three moles (3 × 2.02 g) of hydrogen gas (H₂) to produce 2 moles of ammonia (NH₃)
The mass 'x' grams of nitrogen gas (N₂) that will react completely with150 g of hydrogen (H₂) in the production of NH₃ is given as follows;
[tex]\dfrac{x \ g}{28 .01 \ g} = \dfrac{150 \ g}{3 \times 2.02 \ g} = \dfrac{150 \ g}{6.06 \ g}[/tex]
[tex]\therefore \ x \ g= \dfrac{150 \ g}{6.06 \ g} \times 28.01 \ g = 693.\overline {3168} \ g[/tex]
The mass of nitrogen gas (N₂) that will react completely with 150 g of hydrogen (H₂) in the production of NH₃, x = 693.[tex]\overline{3168}[/tex] grams
Your car burns gasoline as you drive from home to school
Hey. Can someone, please help me with the following questions:
Satellites
Satellites ___________the earth.
You can see _____________ _______________ without a telescope.
An example of a man made satellite is the _____________ _____________ _____________.
The only natural satellite of the earth is the __________.
Choose from: moon, orbit, natural satellites, international space station
Planets
There are ________ planets you can see with the __________ __________.
The five planets are, _________, ___________, ___________, ___________, ___________.
The planets are part of the ___________ ___________.
Light from Saturn takes around ___________ hours to reach earth.
Choose from: 1,5, naked eye, solar system, Mercury, Venus, Mars, Jupiter, Saturn
Comets and Meteors
A _________ is a spectacular sight in the _________ sky.
They are _______ to see and could be described as giant ___________ that orbit the _______.
__________ are bits of dust and _________ that _______ up as they move through the earth’s ____________. A meteor that makes it to earth is called a ______________.
Galaxies
1. What are most of the dots of light that we see in the sky?
2. What is the name of our home galaxy?
3. What is the name of our nearest star?
4. How long does it take the light from the sun to reach the earth?
5. Can you say what some of the other dots of light in the night sky might be?
6. How many stars might there be in one galaxy?
7. What is the name of our nearest neighbor galaxy?
8. State how long it takes for the light from our neighbor galaxy to reach the earth
Calculate the number of moles of NaOH contained in 250. mL of a 0.05M solution.
Answer:
https://newshamchem.weebly.com/uploads/2/2/0/3/22035226/molarity_&_worksheet_answer.pdf
question 9.
Explanation:
Answer:
.0125 moles
Explanation:
Molarity = moles/volume
.05 M = moles/.250L
.0125 = moles
Question 5 of 5
When planning space exploration, scientists face many
challenges. One issue is the weight of the items being
transported. They can use the engineering design process
to help minimize the weight of materials on board a
spacecraft.
You have designed a prototype of a new, lighter material. What should be the
next step in your process?
A. Update your initial design for the new type of material.
B. Test to see
whether your material is strong and works well.
C. Figure out what problems people want to solve.
D. Brainstorm new ways to design materials.
Answer:B
Explanation: got it right on test
Test to see whether your material is strong and works well should be the next step in your process. Therefore, the correct option is option B.
What is space exploration?Space science and technology are used in space exploration to learn more about the universe. While astronomers use telescopes to explore the universe, both unmanned robotic space missions and human spaceflight also participate in the physical exploration of space.
When planning space exploration, scientists face many challenges. One issue is the weight of the items being transported. They can use the engineering design process to help minimize the weight of materials on board a spacecraft. You have designed a prototype of a new, lighter material. Test to see whether your material is strong and works well should be the next step in your process.
Therefore, the correct option is option B.
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In 2005, scientists used cells from a dog named Tai to produce a new puppy with DNA identical to Tai's.
What genetic technology was used?
Answer:
Cloning
Explanation:
This is the process of producing a organism genetically identical to the organism the cells came from.
Answer: cloning
Explanation:
Carbon is one of a few elements that bonds to itself. The scientific term for this is
Answer:
Alkanes
Explanation:
Explanation:
The answer is Alkanes.Alkanes are compound that consists entirely of atoms of carbon and hydrogen joined to one another by single bonds
What is matter? Write any two properties of matter?
Answer:
anything that has weight and occupies space
Explanation:
Matter is anything, such as a solid, liquid or gas, that has weight (mass) and occupies space.
For anything to occupy space, it must-have volume.
calculate the molarity of the solution in a flask that contains 2.50 moles of potassium sulfate in 125 mL of solution
Answer:
0.02 M
Explanation:
Molarity = moles/volume (L)
125 mL =0.125L
M = 2.5/0.125 = 0.02 M
Which term refers to the number of moles of solute per liter of solution?
Question 1 options:
mole fraction
saturation
concentration
molarity
Answer:
molarity
Explanation:
1)how is ice made?
2)what materials does it use?
3)how is it put together
Answer:
milk and sugar and vinillia it uses a machine and you stir until it forms
Explanation:
what is the correct terms for atom with a full valence shell?
Answer:
octet rule
Explanation:
What volume will 3.50 mol of ammonia gas occupy at conditions of standard temperature and pressure?
Answer:
Q:
What volume will 3.50 mol of Xe gas occupy at STP?
A:
78.4 L
Explanation:
The volume occupied by 3.5 moles of ammonia gas at standard temperature and pressure (STP) is 78.45 L
Data obtained from the question Number of mole (n) = 3.5 moles Pressure (P) = STP = 1 atm Temperature (T) = STP = 273 KGas constant (R) = 0.0821 atm.L/Kmol Volume (V) =? How to determine the volume
The volume of the gas at standard temperature and pressure (STP) can be obtained by using the ideal gas equation as illustrated below:
PV = nRT
1 × V = 3.5 × 0.0821 × 273
V = 78.45 L
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(Help would be greatly appreciated) What is the molarity of a solution made from 325.4g of AlCl3 with enough water to make 500.0mL?
1. 4.88g
2. 4.88M
3. 2.440M
4. 2.44M
Answer:
4.88 M
Explanation:
M = number moles/Volume (L)
MM AlCl3 = 133.34 g/mol
Volume = 500 mL = 0.5 L
number moles = mass/MM = 325.4/133.34 = 2.44 moles AlCl3
M = 2.44/0.5 = 4.88 M
Can you help me pretty please !!!
Determine the percent yield for the reaction between 46.5 g of
ZnS and 13.3 g of oxygen if 18.l4 g of ZnO is recovered along with an unknown quantity of sulfur
dioxide.
please show work thank you
The percentage yield of the reaction has been 46.74%.
Percentage yield can be given as the ratio of the actual yield to the theoretical yield.
For the theoretical yield, the balanced equation will be:
[tex]\rm 2\;ZnS\;+\;3\;O_2\;\rightarrow\;2\;ZnO\;+\;2\;SO_2[/tex]
Thus, 2 moles of ZnS will give 2 moles of ZnO.
The moles of 46.5 g ZnS:
Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]
ZnS = [tex]\rm \dfrac{46.5}{97.474}[/tex]
ZnS = 0.477 mol
The moles of 13.3 grams Oxygen:
Oxygen = [tex]\rm \dfrac{13.3}{32}[/tex]
Oxygen = 0.415 mol.
The moles of 18.14 grams ZnO:
ZnO = [tex]\rm \dfrac{18.14}{81.38}[/tex]
ZnO = 0.222 mol
According to the balanced chemical equation,
2 moles ZnO = 2 moles ZnS
0.222 mol ZnO = 0.222 mol ZnS
2 moles ZnO = 3 moles Oxygen
0.222 mol ZnO = 0.334 mol of Oxygen
Since, both the reactants are in enough concentration,
The theoretical yield can be calculated with any of the reactants. The theoretical yield of ZnO from 46.5 grams of ZnS can be given as:
1 mole ZnS = 1 mol ZnO
0.477 mol of ZnS = 0.477 mol of ZnO.
The mass of 0.477 mol of ZnO:
Mass = moles [tex]\times[/tex] molecular weight
Mass of ZnO = 0.477 [tex]\times[/tex] 81.38
Mass of ZnO = 38.818 grams.
The theoretical yield of ZnO = 38.818 g.
The actual yield of ZnO = 18.14 g.
Percentage yield = [tex]\rm \dfrac{18.14}{38.81}\;\times\;100[/tex]
Percentage yield = 46.74 %
The percentage yield of the reaction has been 46.74%.
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How does the strength of the forces that hold the basic particles of a substance together relate to the temperature at which the substance changes state? A. Stronger forces between particles means the substance boils at a higher temperature. B. Stronger forces between particles means the substance boils at a lower temperature. C. Weaker forces between particles means the substance boils at a higher temperature. D. Stronger forces between particles means the substance melts at a lower temperature.
Answer:
A. Stronger forces between particles means the substance boils at a higher temperature
Explanation:
Certain forces hold the atoms of different matter together. These forces of attraction between the atoms (basic particle of a substance), however, play a role in how difficult it is to break the substance. The stronger the force, the difficult it is to break the substance and vice versa.
In relation to temperature, a substance with stronger force will require more heat i.e higher temperature to break the atoms. Hence, Stronger forces between particles means the substance boils at a higher temperature. In other words, the stronger the force, the higher the boiling point of that substance and vice versa.
What are the
invisible lines
revealed by the
Iron fillings
surrounding a
magnet called?
Answer:
At each end of a magnet is a pole. These lines of flux (called a vector field) can not be seen by the naked eye, but they can be seen visually by using iron fillings sprinkled onto a sheet of paper or by using a small compass to trace them out.
hope it's help
#carryONlearningHow many grams of oxygen were used if 3.0 moles of aluminum oxide are produced
Answer:
143.9946 g
Explanation:
Does anyone know how to do this?
Answer
find out the number of moles and use the molar ratio (numbers in front of formulas (in this case they are all 1) to determine how many moles of each product you are going to get theoretically
n=m/M is the equation to use to get moles here
30.8 gm/32.04 g/mol=0.9612 moles of the methanol and also of the formaldehyde so
0.9612 moles of the formaldehyde x molar mass (M) 30.73 g/mol= 29.54 gm which is the theoretical yield you already have the actual yield of 24.7 gm
then divide the actual by the theoretical to get the % yield which is 83.6%
Explanation:
3. What tool do we use to measure force?
Answer:
A force meter
How many grams are in 2.50 moles of copper?
Answer:
There are 63.546 grams in a 2.50 moles of copper.
For the reaction between aqueous silver nitrate and aqueous sodium chloride, write each of the following. The products of the reaction are aqueous sodium nitrate and solid silver chloride.
Complete equation
Complete ionic equation
Net ionic equation
Answer:
A balanced ionic equation shows the reacting ions in a chemical reaction. These equations can be used to represent what happens in precipitation reactions or displacement reactions.
Precipitation reactions
In a typical precipitation reaction, two soluble reactants form an insoluble product and a soluble product.
For example, silver nitrate solution reacts with sodium chloride solution. Insoluble solid silver chloride and sodium nitrate solution form:
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
The Na+ ions and NO3- ions remain separate in the sodium nitrate solution and do not form a precipitate. Ions that remain essentially unchanged during a reaction are called spectator ions.This means these can be ignored when writing the ionic equation. Only how the solid silver chloride forms is needed to be shown:
Ag+(aq) + Cl-(aq) → AgCl(s)
In a balanced ionic equation:
the number of positive and negative charges is the same
the numbers of atoms of each element on the left and right are the same
Displacement reactions
Displacement reactions take place when a reactive element displaces a less reactive element from one of its compounds.
A common type of displacement reaction takes place when a reactive metal reacts with the salt of a less reactive metal. For example, copper reacts with silver nitrate solution to produce silver and copper(II) nitrate solution:
2AgNO3(aq) + Cu(s) → 2Ag(s) + Cu(NO3)2(aq)
In this reaction, the NO3- ions remain in the solution and do not react - they are the spectator ions in this reaction. So, they can be removed from the ionic equation:
2Ag+(aq) + Cu(s) → 2Ag(s) + Cu2+(aq)
Question
Explain why this ionic equation is balanced:
Ba2+(aq) + SO42-(aq) → BaSO4(s)
Hide answer
There are the same numbers of atoms of each element on both sides of the equation. The total charge on both sides is also the same (zero).
Question
Balance this ionic equation, which represents the formation of a silver carbonate precipitate:
Ag+(aq) + CO32-(aq) → Ag2CO3(s)
Hide answer
2Ag+(aq) + CO32-(aq) → Ag2CO3(s)
Question
Balance this ionic equation, which represents the displacement of iodine from iodide ions by chlorine:
Cl2(aq) + I-(aq) → I2(aq) + Cl-(aq)
Hide answer
Cl2(aq) + 2I-(aq) → I2(aq) + 2Cl-(aq
Explanation:
this will help, I used this for my work x
AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃(aq) is the complete chemical equation taking place between the 2 reactants.
Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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The energy transformation in an electromagnetic is from chemical to electrical to electromagnetic waves.
True or False?
True or false The force of gravity acting on an object is measured by weight.
Answer:
true
Explanation:
we need gravity to stay on ground
Answer:
True.
Explanation:
Weight in a physics or scientific sense is defined mathematically as "mass times gravity." It is literally a measure of the force of gravity pulling mass downward towards Earth (or whatever object you're considering).
Which of the following is a true statement about bacteria, based on what Tim and Moby explained??
A: Bacteria exist in only a few environments on Earth.
B: Bacteria can grow to extremely large sizes.
C: Mast bacteria are harmful to humans
D: Bacteria can be both harmful and helpful to humans.
Extra points for help
Answer:
D: Bacteria can be both harmful and helpful to humans.
Explanation:
Hope this helps
What are the number of atoms in each Chemical Formula
what makes sherbet fizzy
Answer:
The chemical reaction between the citric acid and sodium bicarbonate
Explanation:
For an organism’s scientific names, the first part is the ________ and the second is the ________.
A
species, genus
B
kingdom, phylum
C
genus, species
D
class, order
Answer:
C
Explanation:
For an organism scientific names the first part is the genus and the second is the species
For an organism’s scientific names, the first part is the genus and the second is the species. Therefore, the correct option is option C.
What is organism’s scientific name?The genus name and particular epithet make up the binomial name. Italicization is used for species names. The specific epithet comes after the genus name and therefore is not capitalized; the genus name is usually capitalized and written first. This is true without exception.
A scientific name has two components. Genus name comes first, followed by species name. If typed, it is always in italics or underlined (handwritten). Genus names always begin with a capital letter. The initial letter of the word species is not capitalized, though. For an organism’s scientific names, the first part is the genus and the second is the species.
Therefore, the correct option is option C.
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Helllllp meh pleaseeeeeee
Answer:
c (clay)
Explanation: