Always use this method !!! always
Answer:
1.
Explanation:
Let's start with the hydrogen. If we have 4 grams of hydrogen, it would be enough for 4 * 9 = 36 grams of water. Well, that can't be possible ...
4 votes
The answer should be (A) liquid to solid. This is because it releases the heat absorbed by it when it had changed into liquid.
Answer:
0.30 mol.
Explanation:
- The no. of moles of any compound is the mass of the compound divided by the molar mass of the compound:
<em>no. of moles (n) = mass/molar mass</em> = (50.0 g)/(166.0 g/mol) = <em>0.30 mol.</em>