What is activation energy?

A.

energy needed by the body to stay active

B.

energy needed to break chemical bonds

C.

energy provided by carbohydrate foods

D.

energy provided by fat foods

How much energy (in joules) is released when 0.06 kilograms of mercury is condensed to a liquid at the same temperature? A. 51,302.88 J B. 20,075.04 J C. 17,705.1 J D. 697.08 J

Which sequence describes the result of increasing the number of gas particles in a container

Tom is marking the locations of active volcanoes on a world map. Explain how the locations of a volcanoes are related to earth's plates

How is a gas formed?

A chemical change : a. occurs when powdered lemonade is stirred into water. b. occurs when water is vaporized. c. occurs when paper is shredded. d. occurs when salt is dissolved in water. e. occurs when methane gas is burned.

Ethyl acetate reacts with H2, in the presence of a catalyst to yield ethyl alcohol: C4H8O2 + 2H2--> 2C2H6O. A. How many grams of ethyl alcohol are produced by reaction of 2.7 mol of ethyl acetate with H2? B.

Why is it incorrect to balance a chemical equation by changing the subscripts?

Mendeleev's arrangement of elements in the periodic table was based on the observations and experiments of his predecessors who studied mass and properties of elements. True or false?

How many moles do you need to prepare 1.675 L of a 8.50 M NaOH solution? Round your answer to 2 decimal places.

For the following SN1 solvolysis reaction, select the correct rate equation and the overall reaction order (note: CH3OH is the solvent for the reaction). (CH3) 3CCl + CH3OH → (CH3) 3OCH3 + HCl