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24 gm pure sample of magnesium is burnt ...

24 gm pure sample of magnesium is burnt in air to form magnesium oxide and magnesium nitride. When products are treated with excess of `H_(2)O` , 3.4 gm of gaseous `NH_(3)` is generated according to given reactions.
`Mg+O_(2) rarr MgO`
`Mg+N_(2)rarr Mg_(3)N_(2)`
`Mg_(3)N_(2)+ 6H_(2)O rarr 2Mg(OH)_(2)+2NH_(3)`
Calculate the amount of magnesium oxide (in gm) in products.

A

28

B

20

C

16.8

D

32

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The correct Answer is:
A
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24 gm pure sample of magnesium is burnt in air to form magnesium oxide and magnesium nitride. When products are treated with excess of H_(2)O , 3.4 gm of gaseous NH_(3) is generated according to given reactions. Mg+O_(2) rarr MgO Mg+N_(2)rarr Mg_(3)N_(2) Mg_(3)N_(2)+ 6H_(2)O rarr 2Mg(OH)_(2)+2NH_(3) Calculate the amount of Mg(OH)_(2) (in gm) produced in above reaction.

Mg_(3)N_(2) + H_(2)O to

A 12.0 gm sample of magnesium is burnt in air to form magnesium oxide (MgO) and magnesium nitrides (Mg_(3)N_(2)). When the products are treated with water, 1.7 gm gaseous ammonia is generated. What is the mass (in gm) of Mg(OH)_(2) formed simultaneously.

In the reaction 3Mg + N_2 rarr Mg_3N_2

In the reaction x Mg + yHNO_3 rarr Mg (NO_(3))_(2) + N_2O+ H_2 O .

Balance the equation Mg+ HNO_(3) to Mg(NO_(3))_(2) + N_(2)O + H_(2)O

Balance the eqauation , Mg + H_(2)O to Mg(OH)_(2) +H_(2)

GRB PUBLICATION-MOLE CONCEPT, STOICHIOMETRY & CONCENTRATION TERMS-Comprehension#78
  1. 24 gm pure sample of magnesium is burnt in air to form magnesium oxide...

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