If a decrease in temperature accompanies a reaction, what occurred?

A. Energy was absorbed.

B. Energy was released.

C. Energy was destroyed.

D. Energy was created

1. If 25 grams of carbon dioxide gas is produced in this reaction, how many grams of sodium hydroxide should be produced? NaHCO3 > NaOH + CO2. If 50 grams of sodium hydroxide are produced, what is the percent yield?

Which of the following is untrue concerning a reversible reaction? a. All reversible reactions will reach equilibrium. b. The reaction always spends equal time in the forward and reverse direction. c.

A container holds 7.2 L of nitrogen at 25 °C. What will be its volume if the temperature increases to 70 °C? Hint: Use Charles' Law - (V/T1) = (V2/T2)

What is the formula for CaCO3

How many resonance structures are possible for hydroxide ion? A. 3 B. none C. 2

How many metaloides are found on the periodic table

Which of the following is considered to be a chemical property of matter?

How does percent composition by mass contribute to writing a balanced equation?

Raising the temperature of a reacting system increases the rate of the reaction, but does NOT increase the a) activation energy b) number of collisions c) fraction of the reacting particles which possess energies greater than the activation energy

If you have 60 grams of MgCl2 in 5 liters of solution, what is the molarity of this solution?