Which of the following is an endothermic reaction?

condensation of steam

freezing water

the reaction in a cold pack

combustion of methane

The specific heat of water is 4.18 J / (gi°C) and that of wood is 1.97 J / (gi°C). Which statement is correct? A) Regardless of mass, wood will heat up less than water if the same heat is added.

Magnesium fluoride contains only magnesium and fluorine. what is the formula for this compound

The relationship between pressure and temperature of a gas, when volume and moles of a gas are held constant, is: P*T = k. TRUE FALSE

What does it mean for a little strong acid to be in equilibrium? a. The equilibrium lies far to the right so that products

Now dilute 10.0 mL of the 0.50 M NaCl by adding distilled water until 100 mL of solution are produced. Do the 100 mL of diluted NaCl have more, less, or the same quantity of NaCl as the original 10.0 mL of 0.50 M NaCl? more less the same

Which of the following is an extensive physical property of matter? volume viscosity odor density

When is Ksp determined for a system?

What is the average surface temperature of Uranus

Consider the following statements. A. Molecules of hot water have less kinetic energy than those of cold water. B. For most solids, solubility increases when temperature increases. C.

Which describes the fourth state of matter known as plasma? A It is a liquid containing nuclei and electrons. B It is a gas containing nuclei and electrons. C It is a liquid containing electrons created by fusion.