Question

During the Viking landings on Mars, the atmospheric pressure was determined to be on average about 6.50 millibars (1 bar = 0.987 atm). What is that pressure in torr and kPa?

Short answer

One of the 4 basic states of matter is gas. Pure gas is made up of individual atoms, elemental molecules constructed from a single type of atom, or compound molecules created from a combination of atoms. A gas mixture, like the air, is made up of several separate pure gases.

Step-by-step solution

Define Gases

One of the 4 basic states of matter is gas. Pure gas is made up of individual atoms, elemental molecules constructed from a single type of atom, or compound molecules created from a combination of atoms. A gas mixture, like the air, is made up of several separate pure gases.

Evaluating pressure in torr and kPa

The value we have is:

1 torr = 0.001 bar

So, 6.5 millibar = (6.5) (0.001) bar

= 0.0065 bar

Now converting it into torr

We have:

1 bar =750.062 torr

So, we get

0.0065 bar = (0.0065) (750.062) torr

= 4.875 Torr

Then, converting it into kPa

We have is

1 bar = 100kPa

Then, we get

0.0065 bar = (0.0065) × (100) kPa

= 0.65kPa

Therefore, the values are:

4.875 Torr

0.65kPa