Question

answer the questions please.............​

Answer 1

Answer:

1). One mole of substance is 6.022×10²³

2). The Avogadro constant in other unit systems

In other measurement systems where the unit of amount of substance is not the SI mole, the Avogadro constant NA is taken to mean the number of particles in said unit, and will have a different value.

3). 1 mole of He contains 6.023×10^23 atoms.

1 mole of He = 4 gm of He.

So, 20 gm of He contains — (20÷4)×6.023×10^23 atoms = 3.011×10^24 He atoms.

4). 0.5 mole of Nitrogen

1 mole of N=14 gram

0.5 mole N=0.5×14

=7gram

=

2

1

mole

=

2

1

×6.022×10

23

atoms

=3.011×10

23

atoms.

5).1 mole of water (H₂O) = 18 gms

Given mass of water = 36g

Therefore , No.of moles = 36/18 = 2 moles.

Explanation:

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Answer 2

Answer:

Explanation:

1). One mole of substance is 6.022×10²³

2). The Avogadro constant in other unit systems

In other measurement systems where the unit of amount of substance is not the SI mole, the Avogadro constant NA is taken to mean the number of particles in said unit, and will have a different value.

3). 1 mole of He contains 6.023×10^23 atoms.

1 mole of He = 4 gm of He.

So, 20 gm of He contains — (20÷4)×6.023×10^23 atoms = 3.011×10^24 He atoms.

4). 0.5 mole of Nitrogen

1 mole of N=14 gram

0.5 mole N=0.5×14

=7gram

=

2

1

mole

=

2

1

×6.022×10

23

atoms

=3.011×10

23

atoms.

5).1 mole of water (H₂O) = 18 gms

Given mass of water = 36g

Therefore , No.of moles = 36/18 = 2 moles.

Explanation:

hope this will help you.

if this answer will helpful for you then give me a thanks and mark me as brainliest. plz