U9 HW 2: Stoichiometry and Mole Conversions

If 222.17 grams of KClO₄ are produced, how many grams of KCl will also be produced?

_KClO₃ → _KClO₄ + _KCl

• 75.361 g KCl

• 30.212 g KCl

• 120.85 g KCl

• 483.39 mol KCl

Tags

NGSS.HS-PS1-7

Match each substance to the correct coefficient that would balance the following equation:

_KClO₃ → _KClO₃ + _KCl

• 4

• KClO₃

• 3

• KClO₃

• 1

• KCl

Tags

NGSS.MS-PS1-5

Which of the following answer choices is the correct mole ratio between potassium perchlorate and potassium chlorate respectively.

_KClO₃ → _KClO₄ + _KCl

• 3:4

• 1:3

• 4:3

• 1:1

The molar mass of potassium perchlorate is ​ ​ (a)   grams.

• 138.547
• 122.548
• 90.55
• 75.361

If 244.81 grams of NaOH reacts, how many grams of Al₂(SO₄)₃ will also react?

_ Al₂(SO₄)₃ +  NaOH → _ Al(OH)₃ + _Na₂SO₄

• 1821.0 g Al₂(SO₄)₃

• 349.03 g Al₂(SO₄)₃

• 12565 g Al₂(SO₄)₃

• 2094.2 g Al₂(SO₄)₃

Tags

NGSS.HS-PS1-7

The molar mass of aluminum sulfate is ​ (a)   grams.

• 342.15
• 75.047
• 214.158
• 198.159

Drag and drop the correct coefficients to balance the follo​wing equation:

​ ​ (a)   Al₂(SO₄)₃ +  ​ (b)   NaOH → ​ (c)   Al(OH)₃ + ​ (d)   Na₂SO₄​ ​

• 1
• 6
• 2
• 3
• 4
• 5
• 7
• 8
• 9

Tags

NGSS.HS-PS1-7

Match the following substances to their correct mole ratios using the balanced chemical equation below:

1 Al₂(SO₄)₃ +  6 NaOH → 2 Al(OH)₃ + 3 Na₂SO₄

• 6:2

• Na₂SO₄ & Al₂(SO₄)₃

• 2:3

• NaOH & Al(OH)₃

• 3:1

• Al(OH)₃ & Na₂SO₄

• 1:6

• Al₂(SO₄)₃ & NaOH

If 146.07 grams of Cl₂ reacts, how many grams of P₄ will also react?

_ P₄ + _ Cl₂ → _ PCl₅

• 25.523 g P₄

• 2552.3 g P₄

• 63.808 g P₄

• 1809.7 g P₄

If 32.38 grams of DyCl₃ are produced, how many grams of Dy were reacted?

Dy + Cl₂ → DyCl₃

• 19.57 g Dy

• 20.01 g Dy

• 17.32 g Dy

• 200.1 g Dy