The unbalanced equation below shows the reaction between sodium and water. In the reaction, hydrogen gas is given off and sodium hydroxide is formed. The
gas is collected and there is found to be 1.8 grams of hydrogen. What mass of sodium would
have been used in this reaction?

Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

What is the mass of 0.46 mol of mgcl2