Gram to Gram Stoichiometry Practice

What is the mass in grams of 2.3456 moles of W?

W= 183.84

• 431.22 grams

• 6.02 grams

• 207.2 grams

• 486.01 grams

Tags

NGSS.HS-PS1-7

How many grams of NH3 can be produced from 28 grams of N2 in the reaction 3N2 + 3H2 -> 2NH3?

• 34 grams of NH3 can be produced from 28 grams of N2.

• 15 grams of NH3 can be produced from 28 grams of N2.

• 22 grams of NH3 can be produced from 28 grams of N2.

• 40 grams of NH3 can be produced from 28 grams of N2.

What is the mass of 2 moles of CO2?

• 66.02 grams

• 88.02 grams

• 132.04 grams

• 44.01 grams

If 0.5 moles of Al react with excess HCl, how many grams of AlCl3 are produced in the reaction 2Al + 6HCl -> 2AlCl3 + 3H2?

• 72.89 grams

• 45.32 grams

• 60.14 grams

• 66.67 grams

Tags

NGSS.HS-PS1-7

What is the mass of 3 moles of Na2SO4?

• 142.05 grams

• 213.07 grams

• 426.14 grams

• 284.10 grams

If 4 moles of O2 react with excess CH4, how many grams of CO2 are produced in the reaction CH4 + 2O2 -> CO2 + 2H2O?

• 176.04 grams

• 88.02 grams

• 44.01 grams

• 352.08 grams

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled

• the product is half the mass of the reactants

• the mass is the same

• the mass changes depending on the reaction

Tags

NGSS.HS-PS1-7

Where are the numbers for a mole ratio found?

• They are part of the chemical formulas for the reactants / products.

• They are given in the problem.

• They are found on the periodic table for those elements.

• They are found as coefficients in the reaction's balanced chemical equation.

What is the mass in grams of 4.567 moles of Fe? Fe = 55.85

• 254.96 grams

• 127.48 grams

• 255.96 grams

• 128.48 grams

How many grams of H2O can be produced from 44 grams of CO2 in the reaction @@ ext{C} + ext{O}_2 ightarrow ext{CO}_2@@?

• 36 grams of H2O

• 18 grams of H2O

• 72 grams of H2O

• 54 grams of H2O

Tags

NGSS.HS-PS1-7