## Answer :

**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**