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Units, Conversions and Stoichiometry 2021

Last updated over 4 years ago
18 questions
5

Match the chemical reactions with their respective type

  • AB --> A + B
  • H2 + I2 --> 2HI
  • A + BC --> AC + B
  • C6H12O6 + 6O2 --> 6CO2 + 6 H2O
  • NaOH + HCl --> NaCl + H2O
  • CxHy + O2 --> CO2 + H2O
  • A + B --> AB
  • 2H2O --> 2H2 + O2
  • AB + CD --> AD + CB
  • MgCl2 + Zn --> ZnCl2 + Mg
  • Synthesis
  • Decomposition
  • Single Replacement
  • Double Replacement
  • Combustion
2

Match the following masses with the number of moles.

Draggable itemCorresponding Item
23 g of Na
1 mole
4.04 g of H2
2 moles
16.0 g of O2
0.5 moles
10.0 g of NaOH
0.25 moles
2

Rank the following, with the most particles at the top, and the fewest particles at the bottom. Write one sentence explaining your ranking.

  1. 5.0 g of C6H12O6
  2. 5.0 g of U
  3. 5.0 g of H2O
  4. 5.0 g of Xe
  5. 5.0 g of He
3

Rank the following from most mass, to least, with the most mass on top.

  1. 4.0 moles of Li
  2. 10.0 moles of H2
  3. 3.0 moles of He
  4. 1.0 moles of Ca
  5. 3.0 moles of Ne
  6. 0.5 moles of Au
2

When converting meters/sec into miles/hour, which conversion factors are used?

  • used
  • not used
2

Which of the following can be correctly said about 1.0 mole sample of Ag and 1.0 mole sample of Au? Select all that apply.

2

Element X starts neutral, but will ionize to a charge of 3+ and it will undergo a synthesis reaction with chlorine gas (Cl2). Write a balanced chemical reaction for this process.

1

Use the data above to determine the molar mass of the following "chemical" A2G, in grams/mole (just include the number)

2

A2G undergoes a double repacement reaction with EH3. Write a balanced chemcial reaction for this reaction.

2

3DG + 2EH3 --> 3DH2 + E2G3
If 33 grams of DG react with excess EH3, how many grams of E2G3 will form?

2

When 8 moles of aluminum react according to the reaction below, ______ moles of copper will be produced.

2Al + 3CuSO4 --> Al2(SO4)3 + 3Cu

1

As the atomic masses of elements increase, the number of atoms in 1 mole of the element

3

15.0 grams of H2 are placed in a container with 15.0 grams of N2. The pressure and temperature are raised until ammonia, NH3 is formed. How many grams of ammonia will form? Round your answer to 1 decimal place. (Remember to determine the limiting reactant first.) The balanced equation is N2 + 3H2 --> 2NH3

2

4 kelsiers = ______ sazed

2

601.47 grams of Fe2O3 react with excess aluminum to produce ____ grams of iron, according to the following reaction: Fe2O3 + 2 Al → 2 Fe + Al2O3

2

An 1,100 watt microwave can put in 1,100 joules of energy per second. 500 grams of water will need 2090 joules of energy for every degree the temperature increases by. How many minutes should you put your 500 g cup of water in the microwave so that the temperature inceases by exactly 79 degrees?

2

How many moles would be present in 24 g of A2G?

2

What would be the mass (in grams) of 3 moles of DH2?