100 g of radioactive mass has a half life

of 5 days Calculate the mass decayed

off after 15 days

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?