These percentages are most likely mass percentages. Therefore, determine the mass of each element in 100g of the compound.
<span>75g C, 25g H. </span>
<span>Divide these masses by their molar mass to find the ratios of the moles of element in the compound. Divide these values by the smallest of the two/three to get the ratios. </span>
<span>6.25:25 C:H --> 1:4 </span>
<span>So the formulae are CH4 (methane).</span>
I couldnt see any choices but if any of the awnsers mention the skateborder having pontential energy turning into kinetic energy that one would be right
Answer:
Explanation:
1. 40.08 + 35.45(2) = 110.98
2. 14.01 + 1.01(5) + 16.00 = 35.06
3. 107.87 + 12.01(2) + 1.01(3) + 16.00(2) = 165.91
4. 137.33(3) + 30.97(2) + 16.00(8) = 601.93
5. 26.98(2) + 16.00(9) + 12.01(3) = 216.06
6. 65.39 + 14.01(2) + 16.00(6) = 189.41
Check me if I'm wrong.
C srry if im wrung i so hive b ad engish
