What always occurs during a chemical reaction? A. A change in color. B. A change in shape. C. A change in energy. D. A change in state.

What system includes the living components of earth

The kelvin temperature of a substance is inversely proportional to the average kinetic energy of the particles in that substance. question 13 options: a. True b. False

In general, when a substance changes from a solid to a liquid, A. the density of the substance increases. B. the substance no longer has density since density is a property only solids have. C. the density of the substance decreases. D.

Which statement best describes pseudoscience? It is objective and backed by facts. It lacks a process for collecting data. It is constantly updated based on new information. It is closely analyzed before it is made known.

Each of the following reactions shows a solute dissolved in water. Classify each solute as a strong electrolyte, a weak electrolyte, or a nonelectrolyte.

15.434 g of kcl (m. m 74.55 g/mol) is dissolved in water up t a total volume of 500.0 mL. the density of this solution is 1.02 g/mL. what is the concentration of he solution in molality

Determine the molar mass of an unknown monoprotic acid to two decimal places if 20.01 ml of a 0.098 m naoh solution were used to titrate 0.215 g of the unknown acid

A diatomic molecule with a triple covalent bond is A. H2 B. N2 C. O2 D. Br2 (P. S. The answer turned out to be B. N2)

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?