1. A substance has a volume of 2.6 * 10-1 m3 and a mass of 210 g. Determine the density of the sample and express your results in kg/m3 with appropriate scientific notation. Make sure to show all work.

Which would result in radioactive decay? Check all that apply. A) a neutron-to-proton ratio of 1:1 in a small nucleus B) a neutron-to-proton ratio of 1:2 in a large nucleus C) a nucleus that contains 90 protons and 100 neutrons D) a nucleus that

Which process releases energy by breaking down glucose and other food molecules in the presence of oxygen?

How are the relative gas volumes collected in the two tubes related to the relative number of gas molecules in the tubes?

You have a substance and begin a set of experiments in which you break it down into other substances through chemical reactions.

The equation h3 po4 + 3koh → k3 po3 + 3h2 o is an example of which type of reaction?

Heat is an exchange of internal energy from one system to another due to A. a temperature difference between the systems. B. one system being gas and the other being solid. C. the systems having the same temperature. D.

Sierra did 500 J of work to move her couch. If she exerts 250 N of force on the couch, how far did she move it? (Work: W = Fd) 0.5 m 2 m 250 m 750 m'

Lead (ii) sulfide (pbs) has a ksp of 3.0 * 10-28. what is the concentration of lead (ii) ions in a saturated solution of pbs? 1.7 * 10-14m 1.5 * 10-14m 3.0 * 10-14m

A 2.17 gm sample barium reacted completely with water what is the equation for the reaction how many milliliters of dry H2 evoled at 21degree celcius and 748mm of Hg?

What does it mean for data to be continuous?