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What is the m...

Question

What is the mass of one atom of calcium?

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Solution

Atomic mass
Atomic mass gives the mass of the atom.
Each element has its own atomic mass.
The unit of atomic mass is u(unified mass).
Mass of one atom of Calcium
The symbol for Calcium is $Ca$ .
The atomic mass of calcium is $40.08 u$ .
So, the mass of one atom of Calcium is $40.08 u$ .

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Q. The atomic mass of calcium of 40u. What will be the number of calcium atoms in 0.4u of calcium

Q. What is the atomic mass (u) of calcium?

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?

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