Question

(5 marks Answer)
The atomic mass of an element is in fraction . What does this mean ??

(3 marks Answer)
Find out the mass of


in reaction
$\sf {CaCo_3}^{heat} \longrightarrow$

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Answer 1

${\sf{\underline{\boxed{\red{\sf{AnSwEr - (2)}}}}}}$

The atomic mass of an element is in fraction when there an mixture of isotopes with different masses in it, this is why sometimes atomic mass of an element are in fraction form.

${\sf{\underline{\boxed{\pink{\sf{FORMULA: }}}}}}$

$\sf{Average \: mass = \dfrac{Total \: mass \: of \: Atoms}{Total \: number \: of \: atoms}}$

Using this formula, we can calculate the atomic mass:-

Let us frame a simple question by our own and find the average mass.

${\sf{\underline{\boxed{\green{\sf{Question: }}}}}}$

Given:

Let us assume that, the 2 boxes of salt has 5g mass and 2 boxes of sugar has 7g mass.

Find:

Find the average mass of salt and sugar.

Calculations:

We know that:-

Salt = 5g

Sugar = 7g.

⇢ $\sf{Mass \: of \: salt + Mass \: of \: sugar}$

Massofsalt+Massofsugar

⇢ $\sf{5g + 6g = 11g}5g+6g=11g$

So,

⇢ $\sf{Average \: mass = 11 gram \: (4 \: boxes)}$

Averagemass=11gram(4boxes)

⇢$\sf{Average \: mass = 2.75g}$

Averagemass=2.75g

HENCE PROVED!!

1 mole of CaCO3 begets 1 more of CO2.

So maybe this would be work.

= 44.01/100.0869

= 0.439717885

Answer 2

{\sf{\underline{\boxed{\red{\sf{AnSwEr - (2)}}}}}}

AnSwEr−(2)

The atomic mass of an element is in fraction when there an mixture of isotopes with different masses in it, this is why sometimes atomic mass of an element are in fraction form.

{\sf{\underline{\boxed{\pink{\sf{FORMULA: }}}}}}

FORMULA:

\sf{Average \: mass = \dfrac{Total \: mass \: of \: Atoms}{Total \: number \: of \: atoms}}Averagemass=

Totalnumberofatoms

TotalmassofAtoms

Using this formula, we can calculate the atomic mass:-

Let us frame a simple question by our own and find the average mass.

{\sf{\underline{\boxed{\green{\sf{Question: }}}}}}

Question:

Given:

Let us assume that, the 2 boxes of salt has 5g mass and 2 boxes of sugar has 7g mass.

Find:

Find the average mass of salt and sugar.

Calculations:

We know that:-

Salt = 5g

Sugar = 7g.

⇢ \sf{Mass \: of \: salt + Mass \: of \: sugar}Massofsalt+Massofsugar

Massofsalt+Massofsugar

⇢ \sf{5g + 6g = 11g}5g+6g=11g5g+6g=11g5g+6g=11g

So,

⇢ \sf{Average \: mass = 11 gram \: (4 \: boxes)}Averagemass=11gram(4boxes)

Averagemass=11gram(4boxes)

⇢\sf{Average \: mass = 2.75g}Averagemass=2.75g

Averagemass=2.75g

HENCE PROVED!!

1 mole of CaCO3 begets 1 more of CO2.

So maybe this would be work.

= 44.01/100.0869

= 0.439717885