##### What is the mass of 2.54 ml of H2 at 195 0 C and 850 mmHg?

 Chemistry Tutor: None Selected Time limit: 1 Day

What is the mass of 2.54 ml of H2 at 195 0 C and 850 mmHg?

May 18th, 2015

V = 0.00254

T = 468.15

P = 1.1183

mass =

1 mole of H

Im sending you the calculations. just a minute
May 18th, 2015

R = 0.821

n = (1.1183 x 0.00254)/ ( 0.0821 x 468.15)

= 0.00284/38.435

= 0.0000738 moles of H2               1 grams H2 is equal to 0.496061273489 mole

so 0.0000738 is = 0.0001487719439998 grams

May 19th, 2015

Thanks for your patience.

May 19th, 2015

how does .0000738=.00014877g ? for the very last step

May 19th, 2015

If 0.49606 moles of H2 is 1g then 0.0000738 moles =?

= 0.0000738/0.49606 x 1 = .00014877

May 19th, 2015

how did you calculate moles of H2?

May 19th, 2015

Using the formula of Ideal gas laws.

V = 0.00254

T = 468.15

P = 1.1183

mass = 1 mole of H

May 19th, 2015

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May 18th, 2015
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May 18th, 2015
Dec 6th, 2016
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