Electrons are held in an atom by attraction to what particle or location?
a. attraction to the positively charged protons in the nucleus
b. attraction to the lowest electron shell
c. attraction to the magnetic neutrons in the nucleus
d. attraction to the other electrons in the atom

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Which position represents spring in the southern hemisphere? a) b) c) d)