Chemistry Solutions Library

Chemistry Solutions Library

Access over 29,131 Chemistry video and text solutions to help you complete your homework.

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29,131 solutions

Physical & Chemical Changes

Q. Which of the following is a chemical change? a. Sugar dissolves in water b. Solid CO2 is shattered with a hammer c. Ice undergoes fusion to form...

Solved • Feb 11, 2016

Physical & Chemical Changes

Q. Each of the following is an example of a chemical change EXCEPT _________. A. A bicycle rusting B. Burning toast C. Chocolate melting D. Fuel c...

Solved • Feb 11, 2016

Temperature

Q. Gallium is a solid at room temperature, but has a melting point of 302.91 K. Compared to the temperature of the human body, 98.6°F, which is true? ...

Solved • Feb 11, 2016

Significant Figures

Q. Which of the following numbers has the greatest number of significant figures? A. 1.500                   B. 2.4 x 10   4                   C. 0.0...

Solved • Feb 11, 2016

Significant Figures: In Calculations

Q. Perform the following calculation to the right number of sig figs: a) 1 b) 2 c) 3 d) 4

Solved • Feb 11, 2016

Metric Prefixes

Q. The mass of a sample is 550 milligrams. Which of the following expresses that mass in nanograms? A. 5.5 x 10 8 ng  B. 5.5 x 10 6 ng  C. 5.5 x 10...

Solved • Feb 11, 2016

Metric Prefixes

Q. Express 327 kilometers in units of nanometers. a. 3.27 x 10 12 nm b. 3.27 x 10 11 nm c. 3.27 x 10 –4 nm d. 3.27 x 10 14 nm

Solved • Feb 11, 2016