As energy in the form of heat is added to an ice cube, it begins to melt. Which is a valid claim about what causes melting?

A Heat causes the molecules in the ice cube to expand and forces them apart.

B Heat removes thermal energy from the ice cube and causes it to become liquid water.

CThe additional energy causes the bonds between hydrogen and oxygen in the ice cube to break.

DThe transfer of thermal energy to the ice cube causes its molecules to move faster.

The pressure in a fluid is affected by which characteristics of that fluid

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)