mercury has a freezing point of -38°f. water has a freezing point of 32°f. what is the difference?

Explanation:

Step1: Set up the subtraction

We need to find the difference between the freezing - point of water and mercury. So we subtract the freezing - point of mercury from the freezing - point of water. The formula is $32-(-38)$.

Step2: Apply the rule of subtracting a negative number

Subtracting a negative number is the same as adding its positive counterpart. So $32-(-38)=32 + 38$.

Step3: Calculate the sum

$32+38 = 70$.

Answer:

$70^{\circ}F$