Question

A liquid has $35$ drops in $2mL$ .The density of the liquid is $1.2g/ml$ . How many molecules are there in $1$ drop. (molecular weight of liquid $=70$ )

• A. $\frac{12}{35}{N}_A$
• B. $\left(\frac{1}{35}\right)N_A$
• C. $\frac{1.2}{(35{)}^2}{N}_A$
• D. $1.2N_A$

Answer 1

Answer: (C)

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