[研討] 普化作業
2.66
Assume that 50.0 cal of heat is applied to a 15 g sample of sulfur at 20°C.
What is the final temperature of the sample if the specific heat of sulfur is
0.175 cal/(g˙°C)?
2.82
What dosage in grams per kilogram of body weight does a 130 lb woman receive
if she takes two 250 mg tablets of penicillin? How many 125 mg tablets should
a 40 lb child take to receive the same dosage?
2.86
A doctor has ordered that a patient be given 15 g of glucose, which is avail-
able in a concentration of 50.00 g glucose/1000.0 mL of solution. What volume
of solution should be given to the patient.
2.93
The density of sulfuric acid,H2SO4,is 15.28 lb/gal. What is the density of
sulfuric acid in grams per milliliter?
2.94
Sulfuric acid(Problem 2.93) is produced in larger amount than any other
chemical:9.93×10^10 lb in 2000. What is the volume of this amount in liters?
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