Which of these careers require working in dangerous situations, with hazardous chemicals, and/or taking risks?

prison guard
accountant
explosives engineer
waiter

explosive engineers and prison guards

Explanation:

All the rest involve serving people in different ways, not dealing with chemical. The word explosive should have been your first clue.

Prison guards can deal with dangerous inmates and be put in tough situations.

- Hope this helped! Let me know if you need a further explanation.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.