Mercury-197 has a half life of 3 days. Starting with 300 grams, how much remains in 3 weeks? (Round to two places)

A protein is Select one: a. a saturated ester of glycerol. b. a polysaccharide. c. an aromatic hydrocarbon. d. a polymer of amino acids. e. one of the units making up a nucleic acid.

Missed the week of school when we learned this. 1. Some of Earth's layers are not solid and are able to flow. True or false? 2. All of the layers have nearly identical densities.

When electrons are added to the outermost shell of a carbon atom, it forms an anion that has a larger radius. an anion that has a smaller radius. a cation that has a larger radius. a cation that has a smaller radius.

Consider the nuclear equation below. 222/66Rn-->218/? Po+4/2He Which is the missing value that will balance the equation? 84 86 88 90

Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy transport. What is another name for the type of wave that transfers energy in this way?

A group of students wants to see how temperature affects the time it takes for spilled water to dry up in the investigation what will be the dependent and independent variables

What is not true of white light?

Diatoms and some yeasts are unicellular eukaryotes that have mechanisms of nuclear division?

Consider the circuit 9.012 9.012 What is its equivalent resistance? Answer in units of 12.

out of 2.00 50 mL of water is added to 30 mL of a 0.50 M salt solution. What is the new concentration? (To write your answer using scientific notation use 1.0E-1 instead of 1.0 x 10-1)