Allen High School Chemistry Stoichiometry Worksheet and Key Questions

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Ohenby

Science

Allen High School

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Only question 1,2,4,5,7,8. Questions have multiple parts, the empty lines before the mole part should be filled. Writing the answers directly on the document would be optimal.

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Stoichiometry Worksheet and Key 2 KClO3 è 2 KCl + 3 O2 1. How many moles of O2 will be formed from 1.65 moles of KClO3? 1.65 mol KClO3 mol O2 mol KClO3 = mol O2 2. How many moles of KClO3 are needed to make 3.50 moles of KCl? 3.50mol KCl = mol KClO3 3. How many moles of KCl will be formed from 2.73 moles of KClO3? = 4 Fe + 3 O2 è 2 Fe2O3 4. How many moles of Fe2O3 are produced when 0.275 moles of Fe is reacted? 0.275 mol Fe = mol Fe2O3 5. How many moles of Fe2O3 are produced when 31.0 moles of O2 is reacted? = 6. How many moles of O2 are needed to react with 8.9 moles of Fe? = 2 H2O è 2 H2 + O 2 7. How many moles of O2 are produced when 1.26 moles of H2O is reacted? 8. How many moles of H2O are needed to produce 55.7 moles of H2? 9. If enough H2O is reacted to produce 3.40 moles of H2, then how may moles of O2 must have been made? (a bit challenging, but just think about it and you can probably figure it out) 2 KClO3 è 2 KCl + 3 O2 10. How many grams of O2 will be formed from 3.76 grams of KClO3? 3.76g KClO3 1 mol KClO3 122.55 g KClO3 g O2 mol O2 mol O2 mol KClO3 g O2 = 11. How many grams of KClO3 are needed to make 30.0 grams of KCl? 30.0 g KCl mol KCl g KClO3 mol KClO3 g KCl mol KCl mol KClO3 = g KClO3 = g KCl = g Fe2O3 = g Fe2O3 12. How many grams of KCl will be formed from 2.73 g of KClO3? 2.73 g KClO3 4 Fe + 3 O2 è 2 Fe2O3 13. How many grams of Fe2O3 are produced when 42.7 grams of Fe is reacted? 42.7 g Fe mol Fe g Fe mol Fe2O3 mol Fe g Fe2O3 mol Fe2O3 14. How many grams of Fe2O3 are produced when 17.0 grams of O2 is reacted? 17.0 g O2 15. How many grams of O2 are needed to react with 125 grams of Fe? = Some cars can use butane (C4H10) as fuel: 2 C4H10 + 13 O2 è 8 CO2 + 10 H2O 16. How many grams of CO2 are produced from the combustion of 100. grams of butane? 100. g C4H10 = g CO2 = g O2 17. How many grams of O2 are needed to react with of 100. grams of butane? 100. g C4H10 18 How many grams of H2O are produced when 5.38g of O2 is reacted?
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Explanation & Answer

Hey Buddy,Here I have attached the answers for the assignment, answers for question 7,8,9 and 18 I attached in a separate word document I hope my answers will helpful to you, I'm looking forward to working with you in the future also.Thanking you

7.
𝟏. 𝟐𝟔 𝐦𝐨𝐥 𝐇𝟐 𝐎 ×

𝟏 𝐦𝐨𝐥 𝐎𝟐
= 𝟎. 𝟔𝟑 𝐦𝐨𝐥 𝐎𝟐
𝟐 𝐦𝐨𝐥 𝐇𝟐 𝐎

8.
𝟓𝟓. 𝟕 𝐦𝐨𝐥 𝐇𝟐 ×

𝟐 𝐦𝐨𝐥 𝐇𝟐 𝐎
= 𝟓𝟓. 𝟕 𝐦𝐨𝐥 𝐇𝟐 𝐎
𝟐 𝐦𝐨𝐥 𝐇𝟐

9.
𝟑. 𝟒 𝐦𝐨𝐥 𝐇𝟐 ×

𝟏 𝐦𝐨𝐥 𝐎𝟐
= 𝟏. 𝟕 𝐦𝐨𝐥 𝐎𝟐
𝟐 𝐦𝐨𝐥 𝐇𝟐

18.
𝟓. 𝟑𝟖 𝐠 𝐎𝟐 ×

𝟏 𝐦𝐨�...


Anonymous
Awesome! Perfect study aid.

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