MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Molality

How many mole...

Question

How many moles of calcium carbonate $(C a C O_{3})$ are present in 20 g of the substance?
$(C a = 40, C = 12, O = 16)$

A

0.5

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

0.4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

0.2

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

0.1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D 0.2
Molecular weight of ${C a C O}_{3} = 40 + 12 + 48 = 100 g$
Moles of ${C a C O}_{3} = \frac{w e i g h t g i v e n}{m o l e c u l a r w e i g h t o f {C a C O}_{3}} = \frac{20}{100} = 0.2$ moles

Suggest Corrections

thumbs-up

2

Similar questions

Q. How many moles of calcium carbonate (CaCO₃) are present in 10 g of the substance ? (Ca = 40 u ; C = 12 u ; O = 16 u)

Q. How many moles of

{CaCO}_{3}

are present in 500 g of

{CaCO}_{3}

?
Gram atomic masses Ca, C, and O are 40, 12, and 16 respectively.

Q. How many moles of calcium carbonate are present in 10g of the substance?

Q. How many miles of calcium carbonate are present in 10g of the substance

40 g

of calcium was extracted from

56 g

of calcium oxide
(Atomic mass of

C a = 40, O = 16

)
i) What mass of oxygen is there in

56 g

of calcium oxide?
ii) How many moles of oxygen atoms are there in this?
iii) How many moles of calcium atoms are there in

40 g

of calcium?
iv) What mass of calcium will be obtained from

1000 g

of calcium oxide?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Reactions in Solutions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon