The atomic mass of carbon -13 is 13. it has six protons. how many neutrons does the isotope have

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?