How many H atoms are present in 0.046 g of e | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The molar mass of ethanol $(C_2H_5OH)$ is $2 	imes 12 + 6 	imes 1 + 16 = 46 \ g/mol$. Number of moles of ethanol = $\frac{0.046 \ g}{46 \ g/mol}

Vedclass · Accepted Answer

$3.6 	imes 10^{21}$

Vedclass · Answer

(D) The molar mass of ethanol $(C_2H_5OH)$ is $2 	imes 12 + 6 	imes 1 + 16 = 46 \ g/mol$. Number of moles of ethanol = $\frac{0.046 \ g}{46 \ g/mol} = 0.001 \ mol = 10^{-3} \ mol$. Each molecule of $C_2H_5OH$ contains $6$ hydrogen atoms. Total number of $H$ atoms = $	ext{moles} 	imes N_A 	imes 6 = 10^{-3} 	imes 6.022 	imes 10^{23} 	imes 6$. Total number of $H$ atoms = $36.132 	imes 10^{20} \approx 3.6 	imes 10^{21}$.

How many $H$ atoms are present in $0.046 \ g$ of ethanol $(C_2H_5OH)$?

Similar Questions

How many oxygen atoms are present in $4.4 \ g$ of $CO_2$?

The number of molecules of $CO_2$ present in $44 \ g$ of $CO_2$ is

$6.02 \times 10^{20}$ molecules of urea are present in $200 \ mL$ of its solution. The concentration of urea solution is .............. $M$

How many moles are equivalent to $5.6 \ L$ of oxygen gas at $NTP$?

How many moles of magnesium phosphate $Mg_3(PO_4)_2$ contain $0.25$ moles of oxygen atoms?

Vedclass Test Series

Exam Paper Generator

Online Exam Module