Match the following molecules with the number of atoms they contain.

1. 2Fe

2. 2Al3O2

3. 4O2

4. 5C

5. H2SO4

Answers to the question

2

5

7

8

10

In order for two objects to have the same temperature, they must a. be in thermal equilibrium. b. be in thermal contact with each other. c. have the same relative "hotness" or "coldness" when touched.

Suppose a van de Graaff generator builds a negative static charge, and a grounded conductor is placed near enough to it so that a 7.0 x 10-6 coulombs of negative charge arcs to the conductor. Calculate the number of electrons that are transferred.

The more you stretch a rubber band, the more you can feel it pulling back on your fingers. Which of Newton's laws BEST explains WHY? A. first B. second C. third

Which of these is not one of the groups on the periodic table? Group of answer choices gases metals non-metals metalloids

A fishbowl has a circular opening with a diameter of 15 cm. The fishbowl sits upright on a table in a magnetic field of 0.00110 T that is directed horizontally. What is the flux through the glass of the bowl? -7.77 * 10-5 Wb -1.9 * 10-5 Wb -1.

The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. A beam of white light in this glass strikes the glass-air interface at a 25.50∘ angle of incidence and refracts out into the air.

The locations of the major pressure and wind systems on the earth:

Which statements correctly describe the properties of heat? Select all that apply. Heat is an essential component of life on Earth. Heat is energy that flows from one object to another. Heat flows from a hotter object to a colder one.

A book is sitting on a table at rest. Which of the following best describes the forces acting on the book? A.

When NASA's Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One of the largest fragments was a 1770-kg lead-lined film vault, and it landed with an estimated speed of 120 m/s.?