Which factor is a measure of the oxygen in a body of water?

A. temperature

B. dissolved oxygen

C. pH

D. turbidity

By what factor would the average kinetic energy of the particles by increased if the temperature of a substance was increased from - 49°C to 287°C?

Which of the following involve endothermic reactions? (select all that apply) A. A chemical cold pack B. Gasoline in a car engine C. Cooking rice D. A candle flame

In a chemical reaction, the total mass of the reactants is 10.0 grams. After the reaction, the total mass of the products must be: less than 10.0 grams. exactly 10.0 grams. exactly 20.0 grams. more than 10.0 grams.

Sodium hydroxide dissolves in water according to the equation below. if the original temperature of the solution is 50°c, which might be the temperature after a period of time? naoh (s) → naoh (aq) δh = - 445.1 kj. mol

What bond allows metals to conduct electricity

How are natural polymers and synthetic polymers similar? A) Both are made up of phosphates and organic bases B) Both serve important roles in producing amino acids C) Both are made up of monomers that are linked by covalent bonds

How can the solubility of a solution be increased? By increasing the temperature. By decreasing the temperature. By increasing the amount of solvent added. By decreasing the amount of solvent added.

Read the scenario. Ammonia is obtained from a reaction between nitrogen and hydrogen gases. The mole ratio between hydrogen gas and nitrogen gas is 3 to 1, and the mole ratio between ammonia and hydrogen gases is 2 to 3.

Transmutation is the process of transforming one element into another through nuclear reactions. What will be the nuclide produced when Cf-249 is bombarded with C-12? Four neutrons are also produced by the reaction.

State the formula for density in words and mathematical symbols.