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Chapter 3: Q.22E (page 129)

A 55-kg woman has 7.5 脳 10鈭�3 mol of hemoglobin (molar mass = 64,456 g/mol) in her blood. How many hemoglobin molecules is this? What is this quantity in grams?

Short Answer

Expert verified

4.516 x 1021 molecules of hemoglobin

4.834 x 102 g of HB

Step by step solution

01

Determine number of Hemoglobin molecules

Moles of hemoglobin = 7.5 x 10-3 mol

1 mol of hemoglobin = 6.022 x 1023 molecules of hemoglobin

7.5 x 10-3 mol x 6.022 x 1023 molecules = 4.516 x 1021 molecules of hemoglobin

02

Determine amount of Hemoglobin molecules

1 mol of hemoglobin = 64,456 hm of hemoglobin (Molar mass =64,456g/mol)

7.5 x 10-3 mol x 64,456 g/mol of Hemoglobin

= 4.834 x 102 g of Hemoglobin

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