Chemical Calculations 1 (Higher)

Balance the equation

​ CH₄ + ​ (a)   O₂ --> ​ (b)   H₂O + CO₂

• 2
• 1
• 3
• 4

Calculate the formula mass of NH₃

_N=14

_H=1

Calculate the formula mass of Al₂O₃

_{Al = 27}

_{O = 16}

Calculate the formula mass of Ca(OH)₂

_{Ca = 40}

_{O = 16}

_{H = 1}

What is Avagadro's constant?

• 6.02x10^-23

• 6.02x10²³

• 2.06x10²³

• 2.06x10^-23

• 0.602x10²³

How much would 1 mole of H₂O weigh in g?

H = 1

O = 16

How much would 0.6 moles of H₂O weigh in g?

H = 1

O = 16

How much would 3 moles of HNO₃ weigh in g?

H = 1

N = 14

O = 16

How many moles of CO₂ in 132g

C = O

O = 16

How many moles of H₂SO₄ in 70g

H = 1

O = 16

S = 32