Answer: 253.8
Explanation:
The molar mass of iodine is 126.904. Multiply that by two and you get approximately 253.8 grams in two moles.
it is water energy :) this is easy
Answer:
<em><u>The three-dimensional region of space that indicates where there is a high probability of finding an electron.</u></em>
For #4 first find the molar mass(M) of copper then use that and the mass (m) n=m/M to find moles(n) using moles and the volumes find the concentration using c=n/V
