During lab, you learned about exothermic and endothermic heats of solution. which compounds below could be used for a hot pack? (select all that apply.)

Four facts about kinetic theory

Determine the atom inventory for the following equation: 2Na2O ➡ 4Na + O2. Does this equation follow the law of conservation of mass?

What arre the primary elements of the earths layers?

Engineers are starting on a new project to develop technology. Which of these statements does not describe something they might do at the very beginning of the process? A. Look at the benefits and challenges of using specific materials. B.

If an atom has 12 protons 13 neutrons and 11 electrons what will it have?

When water is warm it will: * allow for solids and gases to dissolve easier make it harder for solids and gases to easily dissolve allow for gases to dissolve easier, but make it harder for solids to dissolve allow for solids to dissolve easier, but

If you drink at 2am can you pass a drug test at 6pm

What do we call a substance that can act as both an acid and a base?

Calculate the solubility (in g/l) of silver chromate in water at 25°c if the ksp for ag2cro4 is 1.1 * 10-12. 2.7 * 10-2 g/l 2.2 * 10-2 g/l 3.4 * 10-2 g/l 3.5 * 10-4 g/l

Which equations represent precipitation reactions? More than one can be chosen. A. Na2S + FeBr2 → 2NaBr + FeS B. MgSO4 + CaCl2 → MgCl2 + CaSO4 C. LiOH + NH4I → LiI + NH4OH D. 2NaCl + K2S → Na2S + 2KCl E. AgNO3 + NaCl → AgCl + NaNO3