What is special about waters density when it is a solid?

Which phrase best defines a chemical bond A. unbalanced force inside the nucleus nucleus of an atom B. Force that causes two atoms to split up C. Particales that resist eachother D. Force of attraction between one atom and another atom

Halogens on directly opposite carbons in a benzene ring are in the: para-position meta-position ortho-position none of the above

How would an analytical chemist be involved in addressing concerns about air pollution?

A preparation contains, in each milliliter, 236 mg of dibasic potassium phosphate (m. w. = 174.18) and 224 mg of monobasic potassium phosphate (m. w. = 136.09).

Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose (molar mass = 180.2 g/mol in 920.0 ml of water at 25 °c. the vapor pressure of pure water at 25 °c is 23.76 mm hg. assume the density of the solution is 1.00 g/ml.

1.4 Explain why it is important to support individuals to challenge information about services that may present a barrier to participation

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

A 0.75mol calcium carbonate (CaCO3) pellet has what mass?

The pH of the acid in the stomach is 2. When a person has heartburn, the acid in their stomach is coming up the esophagus (lower throat) and burning the lining of the esophagus. Why would a person take an Alka Seltzer tablet for heartburn?

Calculate the photon energy (in joules) for the light emitted from the hydrogen atom if ninitial = 4 and nfinal = 2.