Stoichiometry Steps

What is the mole ratio of H2O to H3PO4 in the following chemical equation?

• 1 to 6

• 3 to 2

• 4 to 6

• 2 to 3

Tags

NGSS.HS-PS1-7

Knowing the mole ratio of a reactant and product in a chemical reaction would allow you to determine:

• the energy released in the reaction.

• the speed of the reaction.

• whether the reaction is reversible.

• the mass of the product produced from a known mass of reactant.

Tags

NGSS.HS-PS1-7

The most steps are required to solve stoichiometry problems when the reactant is given in grams and the product is sought in

• moles.

• grams.

• liters.

• number of atoms.

Tags

NGSS.HS-PS1-7

For the reaction represented by the equation N_2+3H_{2}\rightarrow 2NH_3, how many moles of nitrogen (N2) are required to produce 18 grams of ammonia (NH3)?

• 0.9 mol

• 18 grams

• 0.53 mol

• 36 grams

Tags

NGSS.HS-PS1-7

Fill in the steps required to find the number of grams of substance B produced from the number of grams of substance A: grams of A \rightarrow ________ \rightarrow _______ \rightarrow ______= grams of B.

Tags

NGSS.HS-PS1-7

• 408 g KClO₃

• 804 g KClO₃

• 598 g KClO₃

• There is not enough information.

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation

• Panic

• Write an Unbalanced Equation

• Ask for help

Which of the following steps is the correct way to determine the mass of a product produced from a given mass of a reactant?

• convert to moles of reactant, convert to moles of product, convert to grams of product

• convert to grams of product, convert to moles of reactant, convert to moles of product

• convert to moles of product, convert to grams of product

• convert to grams of product 

Tags

NGSS.HS-PS1-7

2AgNO₃ + BaCl₂ → 2AgCl + Ba(NO₃)₂

If 39.02 g of barium chloride are reacted in an excess of silver nitrate, how many moles of silver chloride are produced?

• 0.3748

• 0.3744

• 0.3752

• 0.3755

Tags

NGSS.HS-PS1-7

How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6

• 2

• 3

• 1

Tags

NGSS.HS-PS1-7