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

What would most likely be included in the "Analysis" section of a lab report?

Which substance can be described as cations bonded together by mobile electrons? A) Ag (s) B) S₈ (s) C) Kr (l) D) KCl (s) E) HCl (l)

Based on its location in the periodic table, which of these is a property of nickel? A Low density B Strong semi conductor C Highly reactive with other elements D Good conductor of heat and electricity

Which natural gas liquid is used to make the base chemical, ethylene?

Choose the thermochemical equation that illustrates ΔH°f for Li2SO4. Choose the thermochemical equation that illustrates ΔH°f for Li2SO4.

Hf is a stronger acid than nh + 4. which base would be stronger: f - or nh3? 1. f - 2. both bases would be equal in strength. 3. nh3 4. cannot tell from the information given. 5. neither f1 - nor nh3 would be bases.

The concentration of commercially available concentrated nitric acid is 70.0 percent by mass, or 15.9 M. Calculate the density and molality of the solution.

Whats 2 properties of iron?

Which light packs the highest energy per photon

Which of the following hydrocarbons will most likely be found around cows?