Question

Fill in the blanks.
(a) 200g = ......
(c) 24kg 20 g=....
(e) 35g 8 mg =
mg
g
.mg
(b) 46kg
(d) 4g 60mg =
24kg =
9
mg
.​

Answer 1

Answer:

ANSWER

As reaction is as follows:

Mg+

2

1

O

2

→MgO

It means 1 mol of Mg reacts to give 1 mol of MgO.

Number of moles of Mg in 1.2 g =

24

1.2

=0.05 mol of Mg.

Therefore, the number of moles of MgO=0.05 mol

Hence, option A is correct.

Answer 2

a) 200 gm is 0.2kg or 200000mg

b) 46kg is 46000g

c) 24kg 20gm is 24020gm

d) 4g 60mg is 4060gm

e) 35gm8mg is 35008mg

f) 24kg 9mg is 24000009kg