Advanced Chem

Balance this equation.
_CF₄ + _Br₂ -- _CBr₄ + _F₂

• 2,1,2,1
• 1,2,2,1
• 1,2,1,2
• 2,2,2,2

Balance this equation.
_N₂+_O₂->_H₂O+_HNO₃

• not possible
• 2,2,1,2
• 2,1,1,4
• 2,2,1,4

Tags

NGSS.HS-PS1-7

Balance this equation-
__P₄ + __O₂ --> __P₂O₃

• it is already balanced
• 2, 1, 3
• 1, 2, 3
• 1, 3, 2

Tags

NGSS.HS-PS1-7

Carbon tetrachloride is a solvent which is used as a refrigerant and also as a cleaning agent. Today, methane and chlorine are mainly used to produce carbon tetrachloride:

CH₄ + 4Cl₂ → CCl₄ + 4HCl

How many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine (Cl₂) with excess methane?

• 3.845 g

• 61.53 g

• 384.5 g

• 6153 g

Tags

NGSS.HS-PS1-7

Use the balanced equation and the Molar Mass table to answer the following question.

Suppose 110.0 g of CaCl₂ in solution is mixed with 163.9 g of Na₃(PO₄) in solution. How much Ca₃(PO₄)_(s) would be produced?

• 310.2 g

• 155.1 g

• 103.4 g

• 51.70 g

Tags

NGSS.HS-PS1-7

C₃H₈ + 5O₂ --> 3CO₂ + 4H₂O
How much carbon dioxide is produced when 3.0g of propane is burned in 2.1g of oxygen? 

• 0.55g
• 0.038g
• 2.9g
• 0.90g

Sodium sulfate forms a number of hydrates.  A sample of a hydrate is heated until all the water is removed.  What is the formula of the original hydrate is it loses 43% of its mass when heated?

• Na₂SO₄⋅H₂O
• Na₂SO₄⋅2H₂O
• Na₂SO₄⋅6H₂O
• Na₂SO₄⋅8H₂O

Tags

NGSS.HS-PS1-7

How many grams of nitrogen are in 25.0g of (NH₄)₂SO₄?

• 5.30g
• 1.30g
• 0.190g
• 2.65g

Tags

NGSS.HS-PS1-7