A 76.00 pound flask of mercury costs 129.50. The density of mercury is 13.534g/c
ID: 862680 • Letter: A
Question
A 76.00 pound flask of mercury costs 129.50. The density of mercury is 13.534g/cm^3.
A) Find the price of one cubic inch of mercury by calculating the following intermediate values.
What is the price of one mercury?
What is the price of one gram of mercury?
What is the price of one cubic centimeter of mercury?
What is the price of one cubic inch of mercury?
B.) it takes 3.300 cubic inches of mercury to make one manometer. Find the price of the mercury used to make 13 manometers by first calculating the cost of mercury for one manometer.
What is the price of mercury used to make one manometer?
What is the price of mercury used to make 13 manometer?
Explanation / Answer
a.
$129.50 / 76 lbs = $1.70 / lb
76 lbs x (1000 g / 2.2046 lbs) = 34473 g
$129.50 / 34473 g = $0.0037 / g
1 cm^3 is equivalent to 13.534 g
13.534 g x $0.0037 / g = $0.050 / cm^3
1 cubic inch = 2.54^3 = 16.387 cm^3
$0.050 / cm^3 x 16.387 cm^3 = $0.82 / cubic inch
B:
3.3 cubic inches x $0.82 / cubic inch = $2.706 / manometer
13 manometers x $2.706 / manometer = $35.178
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