What can you say about a calcium atom by looking at the symbol 44/20 ca?
a. a calcium atom has 44 neutron s and 20 electrons.
b. a calcium atom has 20 protons and 24 electrons.
c. a calcium atom has 64 protons and 20 neutrons.
d. a calcium atom has 20 protons and 24 neutrons.
e. a calcium atom has 20 protons and 44 neutrons.

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.