Question

volume of 54 gram of water is​

Answer 1

Answer:

We get

1.81

×

10

24

water molecules...

Explanation:

We assess the molar quantity of water in the usual way...

Number of moles

=

mass

molar mass

≡

54

⋅

g

18.01

⋅

g

⋅

m

o

l

−

1

=

3.00

⋅

m

o

l

But the

m

o

l

is like the

dozen

, or the

gross

, it specifies a NUMBER, here

N

A

≡

6.022

×

10

23

⋅

m

o

l

. Why do we use such an absurdly large number? Because

N

A

⋅

1

H

⋅

atoms

have a MASS of

1

⋅

g

precisely...and thus the mole is the link between the micro world of atoms, and molecules, to the macro world of grams and litres....

And so (finally!) we take the product...

Number of water molecules

=

molar quantity

×

Avogadro's number.

Answer 2

• Explanation:

d=m/v so apply in the given formula and thank you for thanks