Consider the compound chloroform. It's percent composition is 10.06% carbon, 0.85% hydrogen, and 89.09% chlorine. Thx molar mass of
chloroform is 119.5 g/mol. What is the coefficient found to calculate the
molecular formula for chloroform?

What are the concentrations of hydroxide and hydronium ions in a solution with a ph of 10.2?

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 of the following units is not an official si unit? mole liter kilogram ampere