Answer :
The important thing in this question is the unit. The mass equals density * volume. 3.1 L = 3.1 * 10^3 cm3. So the mass is 3.193*10^3 g. 1 pound = 453.95 g. So the answer is 7.04 pounds.
There are 7.039 pounds of blood plasma in your body
Further explanation
7 main quantities have been determined based on international standards, namely:
- 1. Length, meters (m)
- 2. Time, second (s)
- 3. Mass, kilograms (kg)
- 4. Temperature, kelvin (K)
- 5. Light intensity, candela (cd)
- 6. Electric current, amperage (A)
- 7. Amount of substance, mol (m)
Mass is one of the principal quantities, which is related to the matter in the object
The main mass unit consists of 7 units :
- Kilogram, kg
- Hectogram, hg
- Decagram, dag
- gram, g
- Decigram, dg
- centigram, cg
- milligrams, mg
Each unit descends then multiplied by 10, and if one unit increases then divided by 10
Conversion of other mass units:
mg milligrams = 10⁻³ g
kg kilograms = 10³ g
µg micrograms (mcg) = 10⁻⁶ g
Mg megagrams (tons) = 10 g
ng nanograms = 10⁻⁹ g
Gg gigagram = 10⁹ g
ρg picogram = 10⁻¹² g
1 pounds = 0.4536 kg
For volume of blood plasma = 3.1 L and
ρ = density = 1.03 g/cm³ = 1.03 kg/l
then :
mass of blood plasma = density x volume
mass = 1.03 kg/l x 3.1 L = 3.193 kg
3.193 kg into pounds become :
3.193 kg : 0.4536 = 7.039 pounds
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Keywords: mass, volume, density, blood plasma