Question

Calculate number of particles in 16 g of He

Answer 1

This tells us that

4.00

grams of

Helium

equates to

1

mole

. We write it as follows:

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

4.00

g He

1

mole

If we are given

16

grams

of

He

, then we can use what we wrote above to figure out number of

moles

of

He

.

16

g He

1

⋅

1

mole

4.00

g He

=

4

moles of He

Answer

:

4

moles of He

Answer 2

Answer:

4×6.022×10²³ particles

Step-by-step explanation:

first let's look at the molar mass if helium form the periodic table and we find that its 4 g

now calculating the no. of moles

given mass

--------------- =16g/4g =4moles

molar mass

1 mole contains=6.022×10²³ particles

4 moles will contain=4×6.022×10²³ particles.

hope it helps buddy.....