A balloon contains 0.950 of nitrogen gas at a volume of 25.5 L. How many grams of N2 should be released from the balloon to bring the volume to 17.3 L? g N2

4.27 g

Explanation:

We can write that for a gas kept at constant pressure and temperature, the number of moles of the gas is directly proportional to its volume:

Which can be rewritten as

where here we have:

is the initial number of moles

is the initial volume of the gas

is the final volume of the gas

So the final number of moles is

So the number of moles that should be released from the balloon is:

The molar mass of gas N2 is

Therefore, the mass of gas that should be released is:

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter