Question

A = 27 + 0.3 C

The maximum amount of potassium chloride, AA, in grams (gg), which can be dissolved in 100g of water at CC degrees Celsius is given by the equation above. Which of the following is the best interpretation of 0.30 as shown in the equation above?

Group of answer choices:

Approximately 0.3 grams of potassium chloride can dissolve in nearly frozen water.

The maximum amount of potassium chloride that can dissolve in water at all temperatures is 0.3 grams.

The amount of potassium chloride that can dissolve in water increases by 1 gram for an increase of 0.3 degrees Celsius in temperature.

The amount of potassium chloride that can dissolve in water increases by 0.3 grams for every 1 degree Celsius increase in temperature.

Answer 1

The amount of potassium chloride that can dissolve in water increases by 0.3 grams for every 1 degree Celsius increase in temperature.

Step-by-step explanation:

Given

`A = 27 + 0.3C`

Required

Interpret 0.3

We make use of the following illustration to answer this question.

Let C = 1

`A = 27 + 0.3*1 = 27 + 0.3 = 27.3`

Let C =2

`A = 27 + 0.3*2 = 27 + 0.6 = 27.6`

Let C = 3

`A = 27 + 0.3*3 = 27 + 0.9 = 27.9`

Notice that when the values of C increases by 1(i.e. from 1 to 2 and 2 to 3), the values of A increases by 0.3

i.e.

`27.9 - 27.6 = 27.6 - 27.3 = 0.3`

Hence, option D is true