The natural abundance of 3he is 0.000137 %. how many protons, neutrons, and electrons are in an atom of 3he?

If the percent by volume is 2.0% and the volume of the solution is 250mL what is the volume of solute in solution

Categorize each hydrocarbon as being saturated or unsaturated. 3-methyloctane cyclopentene propane heptyne heptane

Urine is held in the bladder before excretion. Where is feces stored before excretion? small intestine stomach urethra rectum

Glycerol (c3h8o3) is combined with two molecules of a fatty acid each with the formula c16h22o2 to form a diglyceride. individual fatty acids combine with glycerol via dehydration synthesis. how many hydrogen atoms will the diglyceride have

How does the ionic radius of a non-metal compare with its atomic radius?

Calculate the percent yield when 500 grams of carbon dioxide react with an excess of water to produce 640 grams of carbonic acid. CO2 + H2O - --> H2CO3

Which of the following is a possible equivalence that can be used in a conversion? A. ten to the negative second power hL over one L B. ten to the negative second power cL over one L C. ten to the first power L over one daL D.

Which process is a chemical change? burning a match boiling water melting ice breaking glass

What form of matter is "vapor"? a. a solid made of a substance that is usually liquid c. a gas made of a substance that is usually solid b. a liquid made of a substance that is usually gas d. a gas made of a substance that is usually liquid

Which of the following atoms releases more energy than oxygen when an electron is added to its valence energy level? Select one: a. helium (He) b. fluorine (F) c. carbon (C) d. nitrogen (N)