# chemistry

posted by .

I need to calculate the pressure exerted by the hydrogen in an eudiometer for a weighing by redox lab.

mass of Mg: .021 g
temp: 295K
barometric pressure: 29.87 inches Hg
volume of H2 gas:

the difference between tiop water level in eudiometer = 322 mm
the difference in the top water level = 165 mm

How do I start this?

• chemistry -

I am not certain the height of the water column.

Whatever the height, you change to mm of mercury (inchesHg= heightwater/densitymercury) . Now subtract that from barometric pressure, and you have the pressure of the water vapor.

## Similar Questions

1. ### chemistry

At 650 degree C and a pressure of 690mm HG, the 0.927g sample has a volume of 194cm3. How do I calculate the volume at the same temp but at a pressure of 760mm Hg?
2. ### chemistry

I need to calculate the pressure exerted by the hydrogen in an eudiometer for a weighing by redox lab. mass of Mg: .021 g temp: 295K barometric pressure: 29.87 inches Hg volume of H2 gas: the difference between tiop water level in …
3. ### Chemistry

I forgot in my previous question to say 1014 millibars. The question is I live at 1014 millibars for barometric pressure and temp. is 61 degrees Fahrenheit. I have an imaginary balloon that contains 22 grams of CO2-what is the volume …
4. ### chemistry

Hi, I really need help with my lab report because Im completely stuck. Its about the Ideal Gas behaviour. I am given the mass of Nano2 (0.5044g) the temperature of n2 gas (21.2 C) the temperature of water (21.9 C) the volume of n2 …
5. ### Chemistry

The reaction for my lab is Mg(s)+2HCl(aq)--> MgCl2(aq)+H2(g) I need to find the pressure of the hydrogen gas. Initial Pressure = 0.98692 atm Total Pressure = 1.64816 atm I don't know if I calculated the pressure of hydrogen gas …
6. ### Chemistry Lab

Hydrogen gas was collected over water in a eudiometer at 26 degrees celcius when the atmospheric pressure was 756 mm Hg. What was the pressure of the H2 gas?
7. ### Chemistry

A sample of iron reacted with hydrochloric acid. The liberated hydrogen occupied 40.1 mL when collected over water at 27 C at a barometric pressure of 750 torr. What is the mass of the sample of iron?
8. ### chemistry

A 0.0677 g sample of magnesium metal reacted with excess hydrochloric acid solution to produce 69.9 mL of hydrogen gas. The gas was collected over water at 21.0° C. The levels of water inside and outside the gas collecting tube are …
9. ### Chemistry 11 grade -

Hydrogen gas was collected in a gas-collecting bottle with a volume of 30.0 mL by water displacement on a day where the temperature was 24ºC and the barometric pressure was 98.125 kPa. The vapour pressure of water at 24ºC is 2.99 …
10. ### Algebra 1

Pressure and volume vary inversely in the idea has law. The pressure exerted by a gas of volume 150cubic inches is 30 p.s.i. Find the pressure exerted by the gas if the volume is decreased to 50cuboc inches

More Similar Questions

Post a New Question