Question

A patients blood is tested for growth hormone which has a molecular mass of 848.952g/mol. The test results show a normal concentration of 4.0 x 10^-6 g/L. How many miles of growth hormone are in 1 L of blood?

Answer 1

Answer:

$\boxed{4.7\times 10^{-9}}$

Explanation:

Data:

MM = 848.952 g/mol  

   c = 4.0 x 10⁻⁶ g/L

  V = 1 L

Calculations:

(a) Mass of growth hormone

$\text{Mass} = \text{1 L} \times \dfrac{4.0 \times 10^{-6} \text{ g}}{\text{1 L}} = 4.0 \times 10^{-6} \text{ g}$

(b) Moles of growth hormone

$\text{Moles} = 4.0 \times 10^{-6} \text{ g} \times \dfrac{\text{1 mol}}{\text{848.952 g}} = 4.7\times 10^{-9}\text{ mol}\\\\\text{There are \boxed{\mathbf{4.7\times 10^{-9}}\textbf{ mol}} of growth hormone in 1 L of blood.}$