Question

How many grams are there in 6.5 x1023 molecules of AgNO3 ?

Answer 1

Answer:

It is a fact that such a quantity has a mass of

98.08

⋅

g

. Why? Because

6.022

×

10

23

particles SPECIFIES a molar quantity. And we know (or can calculate) that sulfuric acid has a molar mass of

98.08

⋅

g

...

And so we take the quotient....

7.5

×

10

23

⋅

sulfuric acid particles

6.022

×

10

23

⋅

sulfuric acid particles

⋅

m

o

l

−

1

×

98.08

⋅

g

⋅

m

o

l

−

1

=

122

⋅

g

...

Explanation:

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