The primary colors of pigments

- are cyan, yellow, and magenta

- are the same as the secondary colors of light

- combine in equal amounts to produce black

- all of the above

When ethane burns, it produces carbon dioxide and water: 2C2H6 (g) + 7O2 (g) - --> 4CO2 (g) + 6H2) (I) How many molecules of water will be produced when 3 moles of ethane are burned

How long will it take for a 750 mg sample of radium with a half life of 15 days to decay to exactly 68mg? -48 -50 -52 -54

What is the significance of a standard system of measurement? A. scientists come from different cultural backrounds B. scientists from around the world need a way to share data they can all understand C.

Which element has this electron configuration [He] 2s22p2

A rock sinks in water, but suppose a rock was placed in a pool of mercury. mercury is a liquid metal with a density of 13.5 g/cm cubed. The density of rock is 2.6 g/cm cubed. will the rock sink or not? Explain how you got your answer.

A researcher wants to test the solubility (property of being dissolved) of salt in water as the temperature of the water increases.

If you have three moles of S2, how many moles of Al2S3 can be produced?

Predict whether each of the following reactions will occur in aqueous solutions. Explain your reasoning in each case. Note: Barium sulfate and silver bromide precipitate in aqueous solutions.

The digestive system is the body system that Text to speech A:A. breaks down food into substances that can be absorbed and used for energy. B:B. gets rid of the remaining solid waste that cannot be absorbed. C:C.

What kind of molecule is water? A. nonpolar B. ionic C. polar D. charged