2. Which change in oxidation number indicates

oxidation?

A) - 1 to + 2

C) - 1 to - 2

B) + 3 to + 2

D) + 2 to - 3

Which of the following is a measure of the average kinetic energy of the particles in a sample of matter? A. chemical kinetics B. thermochemistry C. reaction rate D. temperature

What is the heat capacity of 170 g of liquid water?

When Rutherford's coworkers bombarded gold foil with a particles, they obtained results that overturned the existing (Thomson) model of the atom. Explain.

Consider the following three-step reaction pathway. Step 1: (CH3) 3AUPH3 → (CH3) 3Au + PH3 (fast) Step 2: (CH3) 3Au → (CH3) Au + C2H6 (slow) Step 3: (CH3) Au + PH3 - (CH3) AuPH3 (fast) Which is the correct list of reaction intermediates from the

How does heavy water behave compared to normal water

Butter is melted in a pan. Which of the following is true about the change? Select one: a. It is a physical change that absorbs energy. b. It is a physical change that releases energy. c.

The freons are a class of compounds containing carbon, chlorine, and fluorine. while they have many valuable uses, they have been shown to be responsible for depletion of the ozone in the upper atmosphere.

Write its complete chemical symbol including mass number, atomic number, and net charge (if any).

How would you be able to use the spectrum of each gas to establish its identity

Which does not add to the reliability of a scientific source of information? displaying data in a colored chart clearly identifying the sources of the data explaining how the data was collected showing that many scientists had reviewed the