Balancing, Molar Mass, Molar Ratio

Balance the following equation:

__CO₂ + __H₂O -------> __C₆H₁₂O₆ + __O₂

Write down this equation.

• 1, 6, 1, 6

• 1, 1, 6, 6

• 6, 6, 1, 6

• 2, 1, 6, 1

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

Balance the following equation:

__KOH + __H₃PO₄ -----> __K₃PO₄ + __H₂O

Write down this equation.

• 2, 6, 1, 3

• 1, 1, 3, 3

• 3, 1, 1, 1

• 3, 1, 1, 3

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H₂O --> __NaOH + __H₂

• 2,2 --> 2,1
• 4,4 --> 4,1
• 1,2 --> 2,4
• 1,2 --> 2,1

Tags

NGSS.HS-PS1-7

When balancing this equation, Fe + Cl₂ → FeCl₃, the correct coefficient for Cl₂?

• 1

• 2

• 3

• 4

Balance this equation, CaCO₃(s) → CaO(s) + CO₂(g)?

• 3,1,2

• 1,1,1

• 1,3,1

• 2,6,3

What is the molar mass of Cl₂?

• 17 g/mol

• 35.5 g/mo;

• 71.0 g/mol

• 89 g/mol

Calculate the molar mass of CO₂.

• 14 g/mol

• 28 g/mol

• 36 g/mol

• 44 g/mol

Calculate the molar mass of Cu₂O.

• 37 g/mol

• 45 g/mol

• 79.5 g/mol

• 143 g/mol

Calculate the molar mass of water (H₂O).

• 10 g/mol

• 17 g/mol

• 18 g/mol

• 34 g/mol

Calculate the molar mass of NH₄NO₂

• 50 g/mol

• 60 g/mol

• 64 g/mol

• 78 g/mol