A ____________ molecule forms when two molecules have an unequal sharing of electrons.
1 answer:
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Answer:
Use molar mass:)
Explanation:
3.62 mol of Sn ()=429.694
Since 3.62 has 3 sig figs, limit 429.694 to 3
= 430
Answer:
36.23 %
Explanation:
Let's <em>assume we have 1 mol of FeCl₂ · 4H₂O</em>. In that case we would have:
- 1 mol of FeCl₂, weighing 126.75 g (that's the molar mass of FeCl₂), and
- 4 moles of H₂O, weighing (4 * 18 g/mol) 72 g.
Now we can <u>calculate the percent by mass of water</u>:
- % mass = mass of water / total mass * 100%
- % mass =
* 100% = 36.23 %