A patients blood test shows that her hemoglobin concentration is 16. g/dL. how many milligrams are in every 2.00mL of the patients blood?

320 mg

Explanation:

Concentration of hemoglobin = 16g / dL

1 g/dL = 10 mg/mL

16 g/dL = 16 × 10 mg/mL

            = 160 mg/mL

For 1 mL the amount of hemoglobin present is 160 mg.

For 2 mL the amount of hemoglobin present is 160 ×2 mg / mL = 320 mg.

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a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o