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```
100 ml of ethanol (d = 0.78g cc-1) is made upto a litre with pure water. Calculate the molality?
100 ml of ethanol (d = 0.78g cc-1) is made upto a litre with pure water. Calculate the molality?

```
3 years ago

Shailendra Kumar Sharma
188 Points
```							now 100 ml of ethanol and 900 ml of water 100ml ethanol means .78*100 g of ethanol =78g ethanoldensity of water is 1g/ml so 900g of water so molality will be moles of solute/ weight of solution =(78/46)/(900+78).0004 molal
```
3 years ago
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