A 1.23-g sample of a salt is added to 105.0 g of water in a coffee cup calorimeter. If the temperature increases by 2.50 °C, what is the approximate amount of heat (in kJ) involved in the dissolution of the salt, assuming the specific heat of the resulting solution is 4.18 J/g °C​

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

What semimetal can form four single covalent bonds.

Nonmetal halogen family atmoic mass 35