Which colorless and odorless gas, produced by radioactive decay of uranium-238, is considered to be a cancer-causing agent?
a. radon
b. oxygen
c. hydrogen
d. boron

In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and –0.44 v for fe/fe2+? ag+ + fe → ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here