Question

1. what is the mass of a 15ml sample of mercury?(density of mercury is: 13.55 g/cm³) (show your work) (5 pts)

Explanation:

Step1: Convert volume unit

Since \(1mL = 1cm^{3}\), a \(15mL\) sample has a volume \(V=15cm^{3}\).

Step2: Use the density formula

The density formula is \(
ho=\frac{m}{V}\), where \(
ho\) is density, \(m\) is mass, and \(V\) is volume. Rearranging for mass gives \(m =
ho\times V\).
Given \(
ho = 13.55g/cm^{3}\) and \(V = 15cm^{3}\), then \(m=13.55\times15\).

$$m = 13.55\times15=(13 + 0.55)\times15=13\times15+0.55\times15=195 + 8.25=203.25g$$

Answer:

The mass of the \(15mL\) sample of mercury is \(203.25g\).