Chemistry, asked by hmayuri74, 11 months ago


a) One gram atom Al
b) one gram atom Ag
c) one gram atom mg
d) two moles of hydrogen ​

Answers

Answered by saeedpathan888
0

Answer:

hope it will be helpful to you

Explanation:

(a) Molecular weight of Oxygen (O

2

)=32gm/mol

Again 1 molecule O

2

contains 2 atoms of oxygen atoms.

∴ Number of oxygen atoms is 4g of O

2

=

32

4

×2×6.02×10

23

=1.505×10

23

(b) Atomic weight of oxygen and hydrogen are 16gm/mol and 1gm/mole respectively.

∴6.02×10

23

atoms of Oxygen have total weight= 16gm

1 atom of oxygen has weight=

6.02

16

×10

−23

gm=2.657×10

−23

gm

Similarly, 10 hydrogen atoms have weight

=10×

6.02

1

×10

−23

gm=1.66×10

−23

gm

∴ Oxygen atom is heavier than 10 hydrogen atoms.

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Answered by anishkrishnan
2

Answer:

(a) no of moles = gram atom / 6.022 × 10^23

    no of molecule =  1 / 6.022 × 10^23

                              = 0.16 × 10^-23

no of moles = mass / molar mass

        0.16 × 10^-23 = mass / 26.98

              mass = 4.48 × 10^-23g

(b)  no of moles = gram atom / 6.022 × 10^23

                          = 1 / 6.022 × 10^23

     no of moles = mass / molar mass

        1 / 6.022 × 10^23 = mass / 107.86

           mass = 17.91 × 10^-23g

(c)     no of moles = gram atom / 6.022 × 10^23

                              = 1 / 6.022× 10^23

        no of moles = mass / molar mass

        1 / 6.022 × 10^23 = mass / 24.3

        mass = 4.03 × 10^-23g

(d)  no of moles = mass / molar mass

                     2 = mass / 1

                    mass = 2g

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