What is the mole-to-mole ratio of nitrogen to water?

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?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Compare and contrast refraction of light and sound will give brainliest