Stoichiometry

How many moles of oxygen are needed to produce 4.50 moles of water?  

2 H₂ + O₂ --> 2 H₂O

Round your answer to two decimal places. Do not include the unit. Numerical answer only.

How many moles of sodium will react with water to produce 4.00 moles of hydrogen in the following reaction?

2 Na + 2 H₂O --> 2 NaOH + H₂

Round your answer to two decimal places. Do not include the unit. Numerical answer only.

How many moles of hydrogen would it take to produce 14.0 moles of NH₃?  

N₂ + 3 H₂ --> 2 NH₃

Round your answer to two decimal places. Do not include the unit. Numerical answer only.

Tags

NGSS.HS-PS1-7

How many moles of oxygen will react to produce 13.00 moles of water in the following reaction?

4 NH₃ + 5 O₂ →  4 NO + 6 H₂O

Round your answer to two decimal places. Do not include the unit. Numerical answer only.

Tags

NGSS.HS-PS1-7

How many grams of NH₃ will react to produce 48 grams of water in the following reaction?

4 NH₃ + 5 O₂ →  4 NO + 6 H₂O

• 30 g NH₃

• 68 g NH₃

• 32 g NH₃

• 45 g NH₃

Tags

NGSS.HS-PS1-7

What mass of water is produced by burning 500.0 grams of CH₄?

CH₄ + 2 O₂ --> CO₂ + 2 H₂O

• 1255 g CH₄

• 1000 g CH₄

• 1123 g CH₄

• 487 g CH₄

Tags

NGSS.HS-PS1-7

Calculate the mass of silver bromide produced from 22.5 grams of silver nitrate in the following reaction:

2 AgNO₃ + MgBr₂ --> 2 AgBr + Mg(NO₃)₂

• 19 g AgBr

• 25 g AgBr

• 36 g AgBr

• 12 g AgBr

Tags

NGSS.HS-PS1-7

How many grams of sodium will react with water to produce 4.00 grams of hydrogen in the following reaction?

2 Na + 2 H₂O --> 2 NaOH + H₂

• 182 g Na

• 46 g Na

• 86 g Na

• 91 g Na

Tags

NGSS.HS-PS1-7

C₃H₈ + 5 O₂ --> 3 CO₂ + 4 H₂O

What mass of CO₂ is produced by burning 250.0 grams of O₂?

• 206 g CO₂

• 267 g CO₂

• 231 g CO₂

• 293 g CO₂

How many moles are in 2.2x10²⁴ atoms of argon?

e

f

d

g

1.3x10⁴⁸ moles

1 mole

6.02x10^23 moles

39.95 g

2.2x10²⁴ atoms

0.27 moles

22.4 L

3.7 moles

6.02x10²³ atoms

Tags

NGSS.HS-PS1-7