What happens in a stationary front?
A. A warm air mass collides with a stationary cold air mass, and
slides under it B . A warm air mass catches up to a moving cold air mass, sliding
over it
C. A cold air mass and a warm air mass meet, with neither moving.
OD. A cold air mass catches up to a moving warm air mass.

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

How many molecules are in 6.0 moles of methane

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next