1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ankoles [38]
3 years ago
14

Match the grams of each element or compound to the corresponding number of moles of that element or compound.

Chemistry
2 answers:
klasskru [66]3 years ago
8 0

Answer is: 20.0g H - 20.0 moles; 0.50 g Na - 0.022 moles; 2.0 x 102 mg H2O - 0.011 moles.

1) m(H) = 20.0 g; mass of hydrogen.

n(H) = m(H) ÷ M(H).

n(H) = 20 g ÷ 1 g/mol.

n(H) = 20.0 mol; amount of hydrogen.

2) m(Na) = 0.50 g; mass of sodium.

n(Na) = m(Na) ÷ M(Na).

n(Na) = 0.5 g ÷ 22.98 g/mol.

n(Na) = 0.022 mol; amount of sodium.

3) m(H₂O) = 200 mg ÷ 1000 mg/g.

m(H₂O) = 0.20 g; mass of water.

n(H₂O) = m(H₂O) ÷ M(H₂O).

n(H₂O) = 0.2 g ÷ 18 g/mol.

n(H₂O) = 0.011 mol; amount of water.

ad-work [718]3 years ago
6 0
20.0g H = 20.0 moles
0.05 g Na = 0.022 moles
H2O = 0.011 moles
You might be interested in
PLEASE HELP! Find out whether the chemical equation is balanced or unbalanced.
nordsb [41]

One chemical reaction is called the Haber process, a method for preparing ammonia by reacting nitrogen gas with hydrogen gas:


This equation shows you what happens in the reaction, but it doesn’t show you how much of each element you need to produce the ammonia. To find out how much of each element you need, you have to balance the equation — make sure that the number of atoms on the left side of the equation equals the number of atoms on the right.


You know the reactants and the product for this reaction, and you can’t change them. You can’t change the compounds, and you can’t change the subscripts, because that would change the compounds.


So the only thing you can do to balance the equation is add coefficients, whole numbers in front of the compounds or elements in the equation. Coefficients tell you how many atoms or molecules you have.


For example, if you write the following, it means you have two water molecules:


Each water molecule is composed of two hydrogen atoms and one oxygen atom. So with two water molecules (represented above), you have a total of 4 hydrogen atoms and 2 oxygen atoms.


You can balance equations by using a method called balancing by inspection. You take each atom in turn and balance it by adding appropriate coefficients to one side or the other.


With that in mind, take another look at the equation for preparing ammonia: HOPE THIS HELPS



4 0
3 years ago
Orbital structure of sodium?
algol13

Answer:

na.

sodium

11( 2,81,)

pls Mark me as brainlest

5 0
3 years ago
How many molecules of HCI would react with 1 mole of Mgo?
Nostrana [21]

Answer: option d

Explanation: a p e x

6 0
3 years ago
1. Which of the following does NOT indicate that a chemical change may have taken place?
mojhsa [17]
A fracture Formation .
A matter is neither destroyed or created
8 0
3 years ago
For two variables in a direct proportion, what is the result of doubling one variable? the other variable is doubled the other v
Aliun [14]
Other variable is doubled.
8 0
3 years ago
Read 2 more answers
Other questions:
  • What's the capacity of 2 liter bottle
    8·2 answers
  • The abbreviation that represents a volume unit is<br> a. cm3.<br> b. mg.<br> c. mm.<br> d. cm.
    5·1 answer
  • Aluminum carbonate (s)- aluminum oxide(s) -carbon dioxide (g)
    15·1 answer
  • The compound dioxane, which is used as a solvent in various industrial processes is composed of C,H, and O atoms. Combustion of
    9·1 answer
  • A certain heat engine operates between 800 K and 300 K. (a) What is the maximum efficiency of the engine? (b) Calculate the maxi
    7·1 answer
  • The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 co
    9·1 answer
  • You need to make an aqueous solution of 0.150 M sodium fluoride for an experiment in lab, using a 500 mL volumetric flask. How m
    6·1 answer
  • Calculate the amount of heat energy required to heat up 15.9 grams of ice from -4 °C to 14°C.
    13·1 answer
  • What's the basic oxide​
    5·2 answers
  • A physical property of a substance
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!