Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment Set-2>Q 15

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$28 g$ of $N_{2}$ and $6 g$ of $H_{2}$ react to give $34 g$ of ${NH}_{3}$ . This statement illustrates the law of

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Important Questions on Some Basic Concepts of Chemistry

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 1

The total number of electrons in

4.2 g

of

N^{3 -}

ion is (

N_{A}

is the Avogadro's number):

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 2

Suppose that

A

and

B

form the compounds

B_{2} A_{3}

and

B_{2} A

. If

0.05 mole

of

B_{2} A_{3}

weighs

9 g

and

0.1 mole

of

B_{2} A

weighs

10 g

, the atomic weight of

A

and

B

respectively are

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 3

Number of

Fe

atoms in

100 g

Haemoglobin if it contains

0.33 % Fe

. (Atomic mass of

Fe = 56

)

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 4

The number of electrons in

1.6 g

of

{CH}_{4}

is approximately

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 5

Specific volume of cylindrical virus particle is $6 .02 \times 10^{- 2} cc / gm$ , whose radius and length is $7 Å & 10 Å$ , respectively. If $N_{A} = 6 .02 \times 10^{23}$ , find the molecular weight of the virus

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 6

The number of mole of nitrogen in one litre of air

10 %

nitrogen by volume, under standard conditions, is

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 8

Liquid benzene $(C_{6} H_{6})$ burns in oxygen according to the equation

$2 C_{6} H_{6} (l) + 15 O_{2} (g) ⟶ 12 {CO}_{2} (g) + 6 H_{2} O (g)$

How many litres of $O_{2}$ at STP are needed to complete the combustion of $39 g$ of liquid benzene?(Mol. wt. of $O_{2} = 32, C_{6} H_{6} = 78$ )

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Assignment>Q 13

An organic compound containing

C

and

H

gave the following analysis

C = 40 %, H = 6.7 %

. Its empirical formula would be