What is the relative electrical charge of a sodium (Na) ion with 13 electrons? A. -13
B.+2
C.+13
D.-2

Does the energy in a solid increase or decrease when changing to a liquid?

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.