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Stoichiometric Calculations

Calculate the...

Question

Calculate the mass percent of $M g$ converted into $M g_{3} N_{2}$ .

20

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30

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35

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40

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Solution

The correct option is B $30$
The mass percent of $M g$ converted into $M g_{3} N_{2}$ is $\frac{7.2}{24} \times 100 = 30 %$ .

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Similar questions

M g_{3} N_{2}

48 g

M g

34 g m

N H_{3}

M g + N H_{3} \to M g_{3} N_{2} + H_{2}

Size of item	$10 - 15$	$15 - 20$	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$	$45 - 50$
No. of items	$4$	$8$	$18$	$30$	$20$	$10$	$5$	$2$

Class Interval	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$
Frequency	$8$	$5$	$12$	$35$	$24$	$16$

M g_{3} N_{2}

(N = 14, M g = 24.)

3 M g + N_{2} ⟶ M g_{3} N_{2}

M g

10

M g_{3} N_{2}

100 %

x

x \times 100

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