[submar1ney]

I've just worked out using Charles' Law that when a gas (ammonia) is prepared at a temperature of 25 Deg C (298K), the volume of 1 litre increases to approx 1.091 litres. I've also calculated the density decreases from 0.760g/l to 0.696g/l. Do this sound correct? The pressure remains constant. And the gas, i'm led to believe isn't in a sealed container.

Thank you

[Borek]

I've just worked out using Charles' Law that when a gas (ammonia) is prepared at a temperature of 25 Deg C (298K), the volume of 1 litre increases to approx 1.091 litres. I've also calculated the density decreases from 0.760g/l to 0.696g/l. Do this sound correct?

It sounds incorrect - 1L is always 1L. Please elaborate what you mean by "when prepared volume increases". I suppose you have posted omitting part of the information given in the question,

[submar1ney]

I've just worked out using Charles' Law that when a gas (ammonia) is prepared at a temperature of 25 Deg C (298K), the volume of 1 litre increases to approx 1.091 litres. I've also calculated the density decreases from 0.760g/l to 0.696g/l. Do this sound correct?

It sounds incorrect - 1L is always 1L. Please elaborate what you mean by "when prepared volume increases". I suppose you have posted omitting part of the information given in the question,

Of course...

the question states, determine the volume that 1 liter at STP would have, at 25 deg C and 760mmHg

[Borek]

Depends on what you (or rather your prof) means by STP...

http://en.wikipedia.org/wiki/Standard_conditions_for_temperature_and_pressure

[submar1ney]

Depends on what you (or rather your prof) means by STP...

http://en.wikipedia.org/wiki/Standard_conditions_for_temperature_and_pressure

In this case, STP is 0 deg C and 260mmHg

[Borek]

In this case, STP is 0 deg C and 260mmHg

You sure about 260? 

But assuming 760 - your results are OK.

[submar1ney]

In this case, STP is 0 deg C and 260mmHg

You sure about 260? 

But assuming 760 - your results are OK.

OOOOPS, yes. 760mmHg. Time to take a break i think lol...   Many thanks for your help and re-assurance