The mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 molars aqueous solution would be -

Molar mass(sodium acetate) = 82.0245 g/mol

1. 17.86g

2. 31.76g

3. 20.34g

4. 15.38g

Subtopic:  Moles, Atoms & Electrons |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The total number of electrons present in 1.4 g of dinitrogen gas are -

1. 6.023 × 1023 electrons

2. 8.416 × 1022 electrons

3. 4.214 × 1023 electrons

4. 3.927 × 1024 electrons

Subtopic:  Moles, Atoms & Electrons |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If 1010 wheat grains are distributed each second, the time taken to distribute one Avogadro number of wheat grains would be -

1. 1.91 × 106 years
2. 2.31 × 104 years
3. 3.84 × 106 years
4. 1.91 × 105 years

Subtopic:  Moles, Atoms & Electrons |
 56%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The amount of copper (in grams) that can be obtained from 100 g of
copper sulphate (CuSO4
is:

1. 54.00 2. 39.81
3. 63.50 4. 159.50

Subtopic:  Moles, Atoms & Electrons |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The number of moles of hydrogen atoms present in 3 moles of ethane (C2H6), will be-

1. 18.069 x 1023

2. 1.8 x 1023

3. 18

4. 6 x 1023

Subtopic:  Moles, Atoms & Electrons |
 65%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which will have the largest number of atoms among the following?

1. 1 g Au (s)

2. 1 g Na (s)

3. 1 g Li (s)

4. 1 g of Cl2(g)

Subtopic:  Moles, Atoms & Electrons |
 79%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The mass of one 12C atom in g is -

1. 1.393 x 10-23

2. 1.993 x 10-23

3. 1.773 x 10-23

4. 1.593 x 10-23

Subtopic:  Moles, Atoms & Electrons |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The highest number of atoms is present in -

1. 52 moles of Ar

2. 52 u of He

3. 52 g of He.

4. All of the above have the same number of atoms

Subtopic:  Moles, Atoms & Electrons |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh