One mole of an ideal gas

occupies [?] L at STP.

Name Covalent compounds

An atom of helium-4 differs from an atom of lithium-7 in that the atom of helium-4 has?

Which group of elements has a stable number of electrons in their outer energy level? a. noble gases c. halogens b. alkali metals d. alkaline earth metals?

What is the atomic number of xenon, the fifith element in group 18?

A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 126 g of solution. The reaction caused the temperature of the solution to rise from 21.00 to 24.70 ∘C.

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda