Question

calculate the mass of 0.2 moles of caco3​

Answer 1

Answer:

20 gram

Explanation:

CaCO3

atomic mass = 40+12+3×16

                       =100

we know that,

$moles = \frac{gram \: weight}{atomic \: mass}$

Or, 0.2 moles = gram weight/100

Or, gram weight = 100*0.2

Or, gram weight = 20 g

Hence, the mass of 0.2 moles of CaCo3 is 20 g.

(gram weight nd mass is same )

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Answer 2

Given: 0.2 moles of Calcium Carbonate

To find: mass of Calcium carbonate

Solution:

The Molecular mass of CaCO₃( calcium carbonate) = 100

Since mole = gram weight / molecular mass

According to the question, 0.2 is the given mole of CaCO₃.

So, putting the value into the equation, 0.2 = gram weight/ 100

0.2×100 = gram weight

gram weight = 20gm

Therefore, the gram weight of 0.2 moles of CaCO₃ is 20gm.  

• Mole is defined as 6.022 × $10^{23$  elementary ( particles) entities
• The molecular mass of any element is expressed as the number of elements in grams whose numerical value is identical to the molecular mass of the element.