Near the surface of a liquid, fast-moving particles can break free and become a gas.

A. true

B. false

Suppose 1.1854g of copper (II) sulfate pentahydrate is heated to drive off the water of crystallization. Calculate what mass of water would be expected to be released from the salt.

What is the density of 2.5 g of gaseous sulfur held at 130. kPa and 10.0 degrees Celsius? a. 18 g/L b. 1.5g/L c. 45 g/L d. 0.14 g/L

What does a neutron turn into during beta decay?

Marine sediments that form limestone are a major sink for this element

List four elements used in dfds, draw the symbols, and explain how they are used.

Which formula represents a solution? No explanation needed.

When electrons are removed from the outermost shell of a calcium atom, the atom becomes A) an anion that has a larger radius than the atom. B) an anion that has a smaller radius than the atom. C) a cation that has a larger radius than the atom.

A molecule of an unsaturated hydrocarbon must have 1) at least one single carbon-carbon bond 2) at least one multiple carbon-carbon bond 3) two or more single carbon-carbon bonds 4) two or more multiple carbon-carbon bonds

A 8.85 g sample of hydrate of sodium carbonate, Na2CO3 ∙ XH2O was heated carefully until no more mass was lost from the sample. After heating, the final weight of the material was 7.55 g. How many moles of water left the compound? 0 moles

PF3Br2 is a nonpolar molecule. Based on this information, determine the F-P-F bond angle, the Br-P-Br bond angle, and the F-P-Br bond angle. Enter the number of degrees of the F-P-F, Br-P-Br, and F-P-Br bond angles, separated by commas (e. g.