Stoichiometry Review

The coefficients of a balanced equation indicate the relative _____of reactants and products.

• masses in grams

• number of moles

• number of liters

• densities

Tags

NGSS.HS-PS1-7

All stoichiometric calculations begin with a(n)_____.

• skeleton equation

• chemical prediction

• balanced equation

• actual yield

Tags

NGSS.HS-PS1-7

Only ____ and _____ are conserved in every reaction.

• mass and volume

• moles and particles

• mass and number of atoms

• number of atoms and volume

Tags

NGSS.HS-PS1-7

In order to solve stoichiometry problems, the original quantity must be expressed in _____ before calculating a value for a different material in the equation.

• grams

• moles

• liters

• it does not matter

Tags

NGSS.HS-PS1-7

In order for volumes to remain conserved in a chemical reaction, the products and reactants must be ______ at STP.

• solids

• liquids

• gases

• it doesn't matter--volume is always conserved.

Tags

NGSS.HS-PS1-7

The coefficients in a balanced equation can be used to form _____ .

• conversion factors

• mole ratios

• volume calcuations

• mass ratios

Tags

NGSS.HS-PS1-7

To calculate the mass of a molecule in grams, you can use ______.

• the molar mass

• Avogadro's number

• the density at STP

• the mole ratio

Tags

NGSS.HS-PS1-7

What is the mole ratio of A₂ to B₂ in the following equation?

2 A₂ + B₂ --> 2 A₂B

• 2: 2

• 1:2

• 2:1

• 1:1

Tags

NGSS.HS-PS1-7

Avogadro's number

• stoichiometry

• product

• coefficient

• 6.02 x 10²³

• 0 Celsius, 1 atmosphere of pressure

Tags

NGSS.HS-PS1-7

the calculations of quantities in chemical reactions

• stoichiometry

• product

• coefficient

• 6.02 x 10²³

• 0 Celsius, 1 atmosphere of pressure

Tags

NGSS.HS-PS1-7