Question

A box of medicine tablets contains 200000 tablets each weighing 20 mg.What is the total weight of all the tablets in the boxin grams?In kilograms?​

Answer 1

Step-by-step explanation:

Solution

From Graham’s law, we have:

rate of effusion of hydrogen

rate of effusion of oxygen

=

√

1.43

g L

−

1

√

0.0899

g L

−

1

=

1.20

0.300

=

4

1

rate of effusion of hydrogen

Using molar masses:

rate of effusion of hydrogen

rate of effusion of oxygen

=

√

32

g mol

−

1

√

2

mol L

−

1

=

√

16

√

1

=

4

1

rate of effusion of hydrogen

Hydrogen effuses four times as rapidly as oxygen.

Answer 2

Step-by-step explanation:

Number of tablets present in the medicine box = 200000

Weight of each tablet = 20 mg

Weight of 200000 tablets = (200000 × 20)mg

= 4000000mg

Weight of 200000 tablets in grams = (4000000 ÷ 1000)g

= 4000 grams

Weight of 200000 tablets in kilograms = (4000 ÷ 1000)kg

= 4 kilograms

Hope this helps.