What is a solution? a

a homogeneous mixture with particles between .01 and 1 nm
b

a homogeneous mixture with particles smaller than .01nm
c

a heterogeneous mixture with particles between .01 and 1 nm
d

a heterogeneous mixture with particles smaller than .01nm

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

The number at the end of an isotope’s name is the number.