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Nostrana [21]
3 years ago
14

If you were asked to convert 25 cg to the unit hg, which of the following would be the first fraction used in the conversion? on

e hg over ten squared g ten squared cg over one hg ten squared hg over one cg ten to the negative second power g over one cg
Chemistry
1 answer:
zhannawk [14.2K]3 years ago
4 0
We are asked to convert 25 cg to units of hg.

1 cg = 1 centigram = 10⁻² g
1 hg = 1 hectogram = 10² g

The options given are:

a) 1 hg/ 10² g
b) 10² cg/ 1 hg
c) 10² hg/ 1 cg
d) 10⁻² g/ 1 cg

To convert 25 cg to 1 hg, we could convert the 25 cg to grams first, then grams to hg.

25 cg · 10⁻² g/ 1cg = 0.25 g

Here we have converted our number from cg to grams. We can use another conversion of grams to hg to complete the conversion.

0.25 g · 1 hg/ 10² g = 0.0025 hg

Therefore, the first conversion we used was d) 10⁻² g/ 1 cg.
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The freezing point depression of water is 1.86°C/m.kg 
<span>K2S dissociates: </span>
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