Tuesday
September 23, 2014

Homework Help: Chem

Posted by Anonymous on Sunday, November 23, 2008 at 2:11pm.

If 4.0 grams of hydroven, 6.02 x 10^22 atoms of helium and 4.48 liters of argon, measured at STP are placed in a 2.0 liter flask, at 27 degrees C, what is the final pressure?

Under controlled conditions the velocity of hydrogen molecules was found to be 250 meters/sec, and the velocity of an unknown gas was found to be 88.4 meters/sec. What is the molecular weight of the unknown gas?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Density of Gas at STP - Hi Can anyone explain how to calculate the density in g ...
chemistry - A 6.0 L flask contains a mixture of methane, argon and helium at 45 ...
ap chem - A mole of helium gas contains 6.02x10^23 helium atoms. How many helium...
chemistry - If 600 mL of 0.283 M aqueous NaBr and 15.9 L of gaseous Cl2 measured...
chemistry - A 1-L flask is filled with 1.45 g of argon at 25 degrees C. A sample...
CHEM - Calculate the density of oxygen, , under each of the following conditions...
Chemistry - A 1L flask is filled with 1.25 g of argon at 25 degrees celcium. A ...
chem - A 1-L flask is filled with 1.25g of argon at 25 ∘C. A sample of ...
Chem - You've just prepared a solution by transferring 20.0 g of glucose into a ...
Chem! - 10 grams of argon and 20.0 g of the neon are placed in a 1200.0 ml ...

Search
Members