A radio station broadcasts at a frequency of 99.0 MHz. What is this frequency in Hz?

Afamily is one another name for a group on the table of elements.

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

In which phase(s) do the molecules take the shape of the container?