Question

A chemistry student needs 90.0mL of carbon tetrachloride for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of carbon tetrachloride is 1.59g*cm3- Calculate the mass of carbon tetrachloride the student should weigh out. Be sure your answer has the correct number of significant digits.

Answer 1

To find the mass of carbon tetrachloride needed, multiply the given density (1.59 g/cm³) by the volume required (90.0 mL), resulting in 143.1 grams of carbon tetrachloride to be weighed out.

Step-by-step explanation:

The chemistry student needs to calculate the mass of carbon tetrachloride to weigh out for an experiment, given the volume needed and the substance's density. To find the mass, use the formula:

Mass (g) = Density (g/cm3) × Volume (cm3)

First, convert the volume from mL to cm3 (which is the same for liquids). Then,

Mass (g) = 1.59 g/cm3 × 90.0 cm3 = 143.1 g

Therefore, the student should weigh out 143.1 grams of carbon tetrachloride, taking care to use the correct number of significant digits (four, in this case).

Answer 2

volume = mass/density

Here, volume = 80g/1.59gcm-3 → 50.314 cm3

Step-by-step explanation: