Question

टो प्रिपेयर 5% सलूशन ऑफ़ इथेनॉल 5 लीटर ऑफ़ इथेनॉल इज मिक्स विद ......... ऑफ वाटर​

Answer 1

Answer:

7.95%

Explanation:

Volume of ethanol = 10 ml

Volume of solution = 100 ml

Weight of ethanol = Volume×density

= 10×0.785

= 7.85 g

Weight of solution = 100×0.9866

= 98.66 g

Weight percent of ethanol =

98.66

7.85

×100

= 7.95%