During which changes of state does the motion of the atoms decrease?

melting and deposition

freezing and condensation

condensation and evaporation

vaporization and sublimation

For most substances, the distance between the particles is smallest when the substance

A student mixes a solution containing 10.0 g bacl2 (m = 208.2) with a solution containing 10.0 g na2so4 (m = 142.1) and obtains 12.0 g baso4 (m = 233.2). what is the percent yield of this reaction?

How many grams of methanol (CH 3 OH, FM 32.04) are contained in 0.100 L of 1.71 M aqueous methanol (i. e., 1.71 mol CH 3 OH/L solution) ?

How is the compound sodium chloride different from the elements of which it is composed?

A tank has 1.90 mols of Nz gas under a pressure of 4.972 atm at 31.8 °C. Calculate the volume of the tank. A) 4.64 L B) 11.76 L C) 9.56 L D) 3.76 L

How many joules of energy are needed to warm 5.00 g of silver from 25.0°C to 27.5°C? (The specific heat of silver is 0.24 J/g°C.)

In the reaction of magnesium with oxygen gas, a considerable amount of energy was released. This is an example of an exothermic reaction.

Why does an air bubble rise to the surface of a glass of water?

What term expresses the ratio of moles of reactants and products according to the coefficients in the balanced chemical equation? A) mole ratio B) reactant ratio C) product ratio D) yield ratio E) none of the above

What are some examples of kinetic energy