An aqueous solution of 1.69 M hydrochloric acid, HCl, has a density of 1.03 g/mL. The percent by mass of HCl in the solution is

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

What’s the scientific notation for the number 6,840,000,000

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?