HW#10 Chapter 7 Problem 7.51 - Clinical Application ResourcesConstantsPeriodic T

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HW#10 Chapter 7

Problem 7.51 - Clinical Application

ResourcesConstantsPeriodic Table

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Problem 7.51 - Clinical Application

Part A

The compound MgSO4, Epsom salts, is used to soothe sore feet and muscles. How many grams will you need to prepare a bath containing 6.00 moles of Epsom salts?

Express your answer using three significant figures.

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Part B

In a bottle of soda, there is 0.30 mole of CO2. How many grams of CO2 are in the bottle?

Express your answer using two significant figures.

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Explanation / Answer

part A :Epsom salt(MgSO 4 7H2 O) Molecular weight is 261 g/ mole

mole = weight of molecule/gram molecular weight of that molecule

6.00= wt/261.47

wt = 261.47 x 6.00

1568.82 grams are required to produce 6.00 moles

partB:

Similarly to prepare 0.30 moles of Carbondioxide

0.30 = wt/ 44(molecular weight of carbondioxide)

wt = 0.30x44

=13.2 gm required to produce 0.30 moles

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