A rectangular block of copper metal weighs 1896 g. The dimensions of the block are 8.4cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper?

A theory that stands the test of time and becomes the basis for a field of study is called a

What is the mass loss of the nucleus, in u, upon emission of this gamma ray? - g?

Fireworks that contain metallic salts such as sodium, strontium, and barium can generate bright colors. a technician investigates what colors are produced by the metallic salts by performing flame tests.

Two substances, x and y, are to be identified. substance x cannot be broken down by a chemical change. substance y can be broken down by a chemical change. what can be concluded about these substances?

When a 2 kg log is burned, it produces 0.5 kg of ash. Explain why the mass of the ash is less than the mass of the log. In other words, where did all of the mass go?

1. Which of the following best describes an example of pure chemistry? a) testing the effects of lower concentrations of a drug on humans b) studying chemicals containing carbon c) developing a cure for osteoporosis d) finding an antidote for a new

Problem 1: For which of the following activities might you want to hire a chemist? A. building a garage B. testing a sample of water from a well C. finding a comet D.

Why do most living things need food water and the ability to get rid of waste?

What is the effect of adding more water to the following equilibrium reaction? CO2 + H2O - > 2H2CO3

What aldol product is formed when two molecules of butanal react together in the presence of base?