The atomic mass of calcium is 40.08. What is the mass of 6.02 × 1023 atoms of calcium?

In

1

m

o

l

of

C

a

atoms

, there are

N

A

individual calcium atoms.

Explanation:

How does this help you? Well, it happens that

N

A

,

Avogadro's Number

≅

6.022

×

10

23

⋅

m

o

l

−

1

.

And it is stated on your trusty Periodic Table that the molar mass of

C

a

is

40.08

⋅

g

⋅

m

o

l

−

1

. So, if we specify a molar quantity, we specify a precise number of atoms and molecules that can be approximated by mass.

Explanation:

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

c (diamond),

sio2 (quartz)