Which of the following is equal to avogadro's number.

a) the number of molecules of chlorine in .50 mol cl2
b) the number of molecules of nitrogen in 1 mol n2
c) the number of atoms of bromine in 1 br2
d) the number of atoms in 1 mol co

Which of these best describes an ionic bond?

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma