Question

if a graph of data similar to part 2 in this lab produced the following best - fit line equation y = 1.9387x + 17.711, what is the boiling point of a compound with a molar mass of 74.14 amu? 29.11 °c 126.0 °c 161.4 °c 143.7 °c

Explanation:

Step1: Identify the value of x

The molar mass is the independent - variable x. Here, x = 74.14.

Step2: Substitute x into the equation

Substitute x = 74.14 into y = 1.9387x+17.711. So, y=1.9387×74.14 + 17.711.
First, calculate 1.9387×74.14:
1.9387×74.14=(1.9387)×(74 + 0.14)=1.9387×74+1.9387×0.14=(1.9387×70+1.9387×4)+(1.9387×0.1 + 1.9387×0.04)=135.709+7.7548+0.19387 + 0.077548 = 143.735218.
Then, y=143.735218+17.711 = 161.446218≈161.4.

Answer:

161.4 °C