Question

the graph shows the estimated boiling point y, in degrees celsius, of a straight - chain alkane with a molecular weight of x grams per mole, where 1 ≤ x ≤ 280. which statement is the best interpretation of the point (152.08, 191.38)?
a a straight - chain alkane with a molecular weight of 191.38 grams per mole has an estimated boiling point of 152.08 degrees celsius.
b a straight - chain alkane with a molecular weight of 152.08 grams per mole has an estimated boiling point of 191.38 degrees celsius.
c the minimum estimated boiling point for straight - chain alkanes corresponds to an alkane with a molecular weight of 152.08 grams per mole and an estimated ↓ more below 191.38 degrees celsius.

Explanation:

Step1: Identify the axes

The \(x\) - axis represents molecular weight (\(x\) grams per mole) and the \(y\) - axis represents boiling point (\(y\) degrees Celsius).

Step2: Interpret the point \((x,y)\)

For a point \((x,y)\) on the graph, \(x = 152.08\) (molecular weight) and \(y=191.38\) (boiling point). This means when the molecular weight \(x = 152.08\) grams per mole, the boiling point \(y = 191.38\) degrees Celsius.

Answer:

B. A straight - chain alkane with a molecular weight of 152.08 grams per mole has an estimated boiling point of 191.38 degrees Celsius.