When you add 0.295 g of sodium metal to an excess of hydrochloric acid, you find that 3070 j of heat are produced. what is the enthalpy of the reaction as written below?

Is carbon or a fluorine atom more reactive?

NF3 Spell out the full name of the compound.

Which statement about a solid-liquid solution is true? The solution and the solvent are liquid; the solute is a solid. The solute is a liquid, the solvent is a solid, and the solution will vary.

Mr. Soto was trying to explain how electrons move around the nucleus of an atom in circular orbits. Which analogy BEST represents this concept? A) Earth spins on its axis. B) The planets go around the sun.

Which of the following would make a solution? A. Oil in water B. Ice in water C. Sugar in water D. Sand in water

Which ionic compound is water soluble? A. cuS B. NH4NO3 C. SrSO4 D. ZnF

What is part of an experiment that is not being tested and is used for comparison

Is hydrogen sulfide a heterogeneous mixture solution compound or element?

Explain why people who like to stay cool on a hot summer day prefer to wear white clothing?

Which of these is a chemical property? A. Mercury is a dense liquid. B. Iodine vapor has a purple color. C. Aluminum is a very conductive metal. D. Ice melts at 0°C. E. Iron rusts in wet weather.