SATHEE: Some Basic Concepts Of Chemistry Question 180

Some Basic Concepts Of Chemistry Question 180

Question: Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer from A, B, C and D (Atomic mass: N=14, O=16, Cu=63). 1 molecule of oxygen 1 atom of nitrogen $1 \times 10^{- 10}$ g molecular weight of oxygen $1 \times 10^{- 10}$ g atomic weight of copper

Options:

A) II<I<III<IV

B) IV<III<II<I

C) II<III<I<IV

D) III<IV<I<II

Show Answer

Answer:

Correct Answer: A

Solution:

(I) 1 molecule of oxygen $∵$ $6 \times 10^{23}$ molecule has mass $= 32 g m$

$∴$ 1 molecule of $O_{2}$ has mass $= \frac{32}{6 \times 10^{23}}$

$= 5.3 \times 10^{- 23} g m$

(II) 1 atom of nitrogen $∵$ $2 \times 6 \times 10^{23}$ atoms of $N_{2}$ has mass = 28gm
$∴$ 1 atom of $N_{2}$ has mass $= \frac{28}{2 \times 6 \times 10^{23}}$

$= 2.3 \times 10^{- 23} g m$

(III) $1 \times 10^{- 10} g$ molecular weight of oxygen g atomic weight $= 2 \times 1 \times 10^{- 10} = 2 \times 10^{- 10} g$

(IV) $1 \times 10^{- 10} g$ atomic weight of copper So, order of increasing masses $I I < I < I I I < I V$ .

Some Basic Concepts Of Chemistry Question 180

Question: Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer from A, B, C and D (Atomic mass: N=14, O=16, Cu=63). 1 molecule of oxygen 1 atom of nitrogen $1 \times 10^{- 10}$ g molecular weight of oxygen $1 \times 10^{- 10}$ g atomic weight of copper

Options:

Answer:

Solution:

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NCERT Books & Solutions

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Some Basic Concepts Of Chemistry Question 180

Question: Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer from A, B, C and D (Atomic mass: N=14, O=16, Cu=63). 1 molecule of oxygen 1 atom of nitrogen 1×10−10 g molecular weight of oxygen 1×10−10 g atomic weight of copper

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer from A, B, C and D (Atomic mass: N=14, O=16, Cu=63). 1 molecule of oxygen 1 atom of nitrogen $1 \times 10^{- 10}$ g molecular weight of oxygen $1 \times 10^{- 10}$ g atomic weight of copper