An even smaller concentration measurement is parts per billion (ppb). One ppb is one part in 1 billion. One drop of ink in one of the largest tanker trucks used to haul gasoline would be an ink concentration of 1 ppb. It is important to know the difference between ppm and ppb. I hope this helped :)

4 0

4 years ago

A 125 ml sample of gas is at STP how many moles of gas are in the sample

IRINA_888 [86]

Answer:

5.58*10⁻³ moles of gas are in the sample.

Explanation:

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

Being 1000 mL equivalent to 1 L, then 125 mL is equal to 0.125 L. Then you can apply the following rule of three: if by STP conditions 22.4 L are occupied by 1 mole, 0.125 L are occupied by how many moles?

$amount of moles=\frac{0.125 L*1 mole}{22.4 L}$

aomunt of moles= 5.58*10⁻³ moles

5.58*10⁻³ moles of gas are in the sample.

4 0

3 years ago

Read 2 more answers

How can you use your knowledge of minerals chemical makeup or use

yaroslaw [1]

I would go with D on this one

6 0

3 years ago