Answer:-
People with diabetes must monitor their blood glucose levels constantly.
Blood glucose levels are nowadays measured by the help of enzyme glucose oxidase. The enzyme glucose oxidase catalyzes the oxidation of glucose to gluconic acid.
By this way all of the glucose is measured at one time. At the same time hydrogen peroxide is produced.
The hydrogen peroxide reacts with a second color producing chemical. The concentration of the glucose can be related to the intensity of color produced
The correct answer is B).
B. All atoms of silver have the same atomic number but different numbers of neutrons in the nucleus.
The percent given is in terms of volume so the solution contains 40 mL of alcohol per 100 mL of the solution. Multiplying the given amount of solution to the percentage, we will obtain the amount of alcohol.
620 mL solution ( 40 mL alcohol / 100 mL solution ) = 248 mL alcohol