What is the oxidation number for sodium?

A

2-

B

1+

C

2+

D

1-

What is Mechanical weathering?

You could also graph decay time (in seconds or minutes) vs. number of radioactive nuclei. How would this graph differ from the graph of cycle number vs. number of radioactive nuclei? Check all that apply. The graph would flip over.

A 20.0 g sample of copper at 25.0 °c absorbs 475 j. What is the final temperature of the copper? (specific heat capacity of copper is 0.385 j/g °c.)

Which of the following shows the balanced equation for Ca + 02 - CaO? Ca + O2 - CaO 2Ca + O2 - 2CaO 4Ca + 202 - 2CaO 2Ca + 202 - 2CaO

Identify the compounds that are soluble in both water and hexane. A) methanol and ethanol B) ethanol and 1-butanol C) ethanol and 1-propanol D) 1-butanol and 1-pentanol E) 1-propanol and 1-butanol

Fission reactions can get of of control without what taking place?

In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)

What is the nuclear charge of an alpha particle?

How many protons electrons and neutrons does 13C contain

Are all individuals in a population of animals or a population of plants identical