# A tank contains helium gas at 490 mmHg, N gas at 0.75atm, and Ne at 520 torr.?

What is the total pressure in atm?

convert the helium gas to atm which is .644

plus N gas 0.75 and convert 520 torr to atm which is .684

total pressure is 2.07 atm

The pressures simply add up. All you need to do it convert all the pressures to atm and then add them up.

490mm/760mm per atm + 0.75 + 560torr/760 torr per atm =

.64 + .75 + .73= ~2.13 atm

Depending on how many significant figures you are allowed, your answer would be 2.07atm. Take the 490 mmHg and divide by 760. Take 520/760 (1 atm=760 torr). Use Dalton's Law of Partial pressures and add them all up to get the total pressure of the system. Ptot = P1 + P2 + P3 etc. Assuming that your numbers were 490. and 520. then you would be allowed only 2 sig figs and then your answer would be 2.1 atm. Hope that helps!

490mmHg + 570mmHg + 520mmHg = 1,580mmHg

= 2.08atm

More Questions and Answers:

Finding products and balancing equations?
True or false----The electrons emitted by a beta emitting isotope are its valences electrons?
General chem help needed?
Functional Group Tests -- Procedures?
When we prepared hydrogen gas in nellcen,s cell, why chlorine goes to anode ? not the OH?
Calculate the temperature of a 969 mL sample of CH4 gas at 104 kPa with a mass of 0.647 g.?
Basic chemistry question!!!?
Thermodynamics: ice melting question?
What volume would 60.4 grams of NH3 occupy if the temperature is 27 dgrees celcius and the pressure is 670 tor

**Answer:**convert the helium gas to atm which is .644

plus N gas 0.75 and convert 520 torr to atm which is .684

total pressure is 2.07 atm

The pressures simply add up. All you need to do it convert all the pressures to atm and then add them up.

490mm/760mm per atm + 0.75 + 560torr/760 torr per atm =

.64 + .75 + .73= ~2.13 atm

Depending on how many significant figures you are allowed, your answer would be 2.07atm. Take the 490 mmHg and divide by 760. Take 520/760 (1 atm=760 torr). Use Dalton's Law of Partial pressures and add them all up to get the total pressure of the system. Ptot = P1 + P2 + P3 etc. Assuming that your numbers were 490. and 520. then you would be allowed only 2 sig figs and then your answer would be 2.1 atm. Hope that helps!

490mmHg + 570mmHg + 520mmHg = 1,580mmHg

= 2.08atm

The answers post by the user, for information only, FunQA.com does not guarantee the right.

More Questions and Answers: