What is the mass of a solution that has a density of 0.775 g/mL and a volume of 50.0 mL?

Question

BlackTom AI · Accepted Answer

To determine the mass from density and volume, we use the relationship mass = density × volume.
Option 1: 0.016 g. If you multiply a density around 0.775 g/mL by 50 mL, you should expect a mass near 40 g, not a tiny fraction like 0.016 g. This option is far too small and indicates a misplacement of decimal or unit error.
Option 2: 38.8 g. This value aligns with the calculation: 0.775 g/mL × 50.0 mL = 38.75 g, which rounds appropriately to 38.8 g given the significant figures (three sig figs in both density and volume). The unit is grams, matching the calculation.
Option 3: 64.5 g. This would correspond to a density about 1.29 g/mL if the volume were 50 mL, or a volume around 83 mL with density 0.775 g/mL. It overshoots the expected mass for the given volume and density, suggesting a miscalculation of either quantity.
Option 4: 0.039 g. This is orders of magnitude smaller than expected for the product of 0.775 g/mL and 50 mL, indicating a likely error such as converting mL to L incorrectly or scaling by a factor of 1000.
In summary, the correct approach yields a mass on the order of tens of grams, with the only value matching the calculated result after proper rounding being 38.8 g.

SP25: CHEM-30A Sec 01 - Intro Chem Final Exam

What is the mass of a solution that has a density of 0.775 g/mL and a volume of 50.0 mL?

View Explanation

Log in for full answers

Similar Questions

Gases are more dense than liquids or solids.

A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 11.3 mg. Which of the following is most likely the unknown metal?

Water molecules bond in a crystalline form as the temperature of water drops. This creates more space between water molecules. What characteristic of water does this change describe?

A rectangular solid measures 10.0 cm by 4.1 cm by 2.0 cm. The mass of this solid is 98.4 g. Calculate the density of the solid in g/mL.

A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the density of Pb is 11.34 g/cm3, calculate the mass of the block.

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler