Stoichiometry

Front

What is stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

True or False: You must convert grams to moles to do stoichiometry.

Back

True

Front

What is the purpose of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides of the equation, adhering to the law of conservation of mass.

Front

What are the coefficients in the balanced equation KNO₃ → KNO₂ + O₂?

Back

The coefficients needed to balance the reaction are 2, 2, 1.

Front

How do you calculate the number of moles from grams?

Back

To calculate moles from grams, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What mass of O₂ is needed to burn 36.1 g of B₂H₆?

Back

124 g O₂.

Front

In the reaction 2H₂ + O₂ → 2H₂O, how many moles of water are produced from 8 moles of H₂?

Back

8 moles of water.

Front

How many moles of CO₂ are produced from 10 moles of CO in the reaction 2CO + O₂ → 2CO₂?

Back

10 moles of CO₂.

Front

What is the molar mass of water (H₂O)?

Back

The molar mass of water is approximately 18.02 g/mol.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.