Chemical Equations and Molar Ratios

Consider the equation CaCl₂ + 2Na --> 2NaCl + Ca. How many moles of NaCl can be produced from 8 moles of CaCl₂?

• 8

• 4

• 16

• 2

Tags

NGSS.HS-PS1-7

Consider the equation CaCl₂ + 2Na --> 2NaCl + Ca. How many moles of NaCl can be produced from 5 moles of Na?

• 2.5

• 5

• 2

• 10

Tags

NGSS.HS-PS1-7

Consider the equation 2Al(OH)₃ --> Al₂O₃ + 3H₂O. How many moles of H₂O can be produced from 6 moles of Al(OH)₃?

• 9

• 4

• 3

• 12

Tags

NGSS.HS-PS1-7

Consider the equation 2Al(OH)₃ --> Al₂O₃ + 3H₂O. How many moles of Al(OH)₃ are needed to produce 15 moles of H₂O?

• 3

• 27.5

• 7.5

• 10

Tags

NGSS.HS-PS1-7

Consider the equation 2Al(OH)₃ --> Al₂O₃ + 3H₂O. How many moles of Al₂O₃ must have been produced if 9 moles of water was produced?

• 6

• 3

• 9

• 12

Tags

NGSS.HS-PS1-7

Consider the equation CaSO₄ + 2LiF --> CaF₂ + Li₂SO₄. How many moles of Li₂SO₄ can be produced from .256 moles of LiF?

• .256

• .128

• .512

• 1.02

Tags

NGSS.HS-PS1-7

Consider the equation CaSO₄ + 2LiF --> CaF₂ + Li₂SO₄. How many moles of CaSO₄ are needed to produce from 3.97 moles of CaF₂?

• 1.99

• .993

• 7.94

• 3.97

Tags

NGSS.HS-PS1-7

Octane combusts according to the following equation: 2C₈H₁₈ + 25O₂ --> 16CO₂ + 18H₂O. How many moles of CO2 can be produced from 4.75 moles of octane?

• .594

• 38

• 4.75

• 19

Octane combusts according to the following equation: 2C₈H₁₈ + 25O₂ --> 16CO₂ + 18H₂O. How many moles of O₂ are needed to react with 2.235 moles of octane?

• .179

• 58.88

• 27.94

• 2.235

Tags

NGSS.HS-PS1-7

Octane combusts according to the following equation: 2C₈H₁₈ + 25O₂ --> 16CO₂ + 18H₂O. How many moles of CO₂ must have been produced if 11.98 moles of water was produced?

• 10.65

• 13.48

• 191.7

• .749

Tags

NGSS.HS-PS1-7