Which of the following statements about nonmetal elements is true? A.) Nonmetal elements are stronger than metals.

B.) Nonmetal elements are never used in computers.

C.) Nonmetal elements are sometimes cheaper to make.

D.) Nonmetal elements are used only in laptop computers.

Find the mass in grams of 1.37x1020 particles of h3po4

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?

Which tool is least in predicting weather