Answers:
0.0044 mol·L⁻¹; 0.006 66 mol·L⁻¹
Step-by-step explanation:
(1) Before eating
80. mg/100. mL Convert milligrams to grams
= 80. mg/100. mL × 1 g/1000 mg
= 0.080 g/100. mL Convert grams to moles
= 0.080 g/100. mL × 1 mol/180.16 g
= 4.44 × 10⁻⁴ mol/100. mL Convert millilitres to litres
= 4.44 × 10⁻⁴ mol/100. mL × 1000 mL/1 L
= 0.0044 mol·L⁻¹
(2) After eating
120. mg/100. mL Convert milligrams to grams
= 120. mg/100. mL × 1 g/1000 mg
= 0.120 g/100. mL Convert grams to moles
= 0.120 g/100. mL × 1 mol/180.16 g
= 6.661 × 10⁻⁴ mol/100. mL Convert millilitres to litres
= 6.661 × 10⁻⁴ mol/100. mL × 1000 mL/1 L
= 0.006 66 mol·L⁻¹
The molarity of glucose in the blood before and after meal is 0.044 mol/L and 0.066 mol/L respectively.
Molarity:
It is the measure of the concentration in grams of solute in 1 letter of solvent.
[tex]\bold { M = \dfrac {w}{m\times v}\times {1000}}[/tex]
Where,
M - molarity
w - given mass of solute
m - molar mass of solute,
v - volume
Put before meal values,
[tex]\bold{ M = \dfrac {0.8\g}{180.16\ g/mol \times 100\ ml}\times 1000}\\\\\bold{ M = 0. 44\ mol/L}[/tex]
put the After meal values, we get
M = 0.066 mol/L
Therefore, the molarity of glucose in the blood before and after meal is 0.044 mol/L and 0.066 mol/L respectively.
To know more about molarity,
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