The total pressure in a flask containing only hydrogen and helium is 580 mmHg. If hydrogen accounts for 70% of the pressure and helium contributes 30% of the pressure, what is the partial pressure of the hydrogen gas? A) 406 mmHg
B) 510 mmHg
C) 174 mmHg
D) 83 mmHg

Answer choice c  = 174

Explanation:

If you divide 30% into 580 you get 174. You can also check your work by doing 580 divided by 70%

30% divided by 580 = 174

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.