Which of the following is true regarding phase changes?

A. Condensation is the reverse of evaporation.

B. Melting is the reverse of deposition.

C. Freezing is the same as sublimation.

D. Sublimation is the same as boiling.

How many moles are equal to 5.82 x 10^23 atoms of tungsten (w)

If the ph of a solution is decreased from 7 to 6 it means that the

In the chemical reaction below, what is the product? C + O2 + CO2

Which of the processes is exothermic? a. evaporation of alcohol b. sublimation of iodine c. solidification of volcanic lava d. burning of paper

Which of the following is NOT an assumption of the kinetic theory of gases? Gas particles are in constant random motion. The volume of individual gas particles is zero. The particles in a gas are attracted to each other.

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Semi-conductors have properties of both metals and non metals. which are two examples of metalloids

How do you determine the percent yield of a chemical reaction?

What is a property of a combustion reaction? A. Oxygen gas, O2, is a reactant. B. The products are simpler than the reactants. C. The reactants are simpler than the products. D. An uncombined element is on the reactant and product side.

For an endothermic reaction at equilibrium, the addition of a catalyst Group of answer choices causes no shift causes a shift to the right causes a shift to the left makes it an exothermic process