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Biblioteka

Stoich #2 Academic Chem w/ LR Practice

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Posljednje ažuriranje 2 months ago
7

Must SHOW WORK for credit.

Do NOT type equations/problems/etc. Work MUST be handwritten for credit.

Must give UNITS.

Must put answer in SIGNIFICANT DIGITS.

and fyi ... must have leading zeros (example: 0.1234 ... not, .1234)

also fyi ... this particular Formative STILL has you showing work even though it is multiple choice answers

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Pitanje 1
1.

What are the coefficients needed to balance the reaction:          C4H10O   +   O2   -->  CO2   +  H2O

SHOW ALL WORK

Pitanje 2
2.

Using the balanced chemical equation from question 1, determine how many moles of oxygen are needed to react with 3.45 moles of C4H10O. SHOW ALL WORK

Pitanje 3
3.

Using the amount of moles you calculated that you need of oxygen from question 2, if you have 9.45 moles of oxygen gas available, what does that tell you about oxygen gas?

Pitanje 4
4.

What are the coefficients needed to balance the reaction:               CsCl  +  O2   -->   CsClO3

SHOW ALL WORK

Pitanje 5
5.

Using the balanced chemical equation from question 4, when 4.5 mole of CsCl reacts with 5.80 moles of O2, determine which reactant is the limiting reagent. SHOW ALL WORK

Pitanje 6
6.

When 10.5 g of potassium reacts with 12.1 g of cobalt (IV) fluoride, determine which is the limiting reagent using the balanced chemical equation below. SHOW ALL WORK

4 K  +   CoF4    -->   4KF   +  Co

Pitanje 7
7.

Why do you calculate the limiting reagent?  What is its use?