All of the following elements are metals EXCEPT?
A. Br B. Co C. Cu D. Zn

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Determine the reaction and balance the following equations urgent due in the morning