# Yahoo Web Search

1. ### What is the density of acetylene (C2H2) in grams per litre at STP ? Show your work.?

At STP 1 mole of any ideal gas occupies a volume of 22.4 L mass of 1 mole of C2H2 = (2 x 12.01) + (2 x 1.008) = 26.036 g So at STP 26.036 g of C2H2 has a volume of 22.4 L density = mass / volume...

2 Answers · Education & Reference · 17/06/2012

2. ### Help with a chem question?

...write the balanced equation: O2 + 2H2 → 2H2O at STP 1 mol of O2 occupies 22.4 L so mol O2 available = 5...

1 Answers · Education & Reference · 17/06/2013

3. ### can someone help me? chemistry !?

...= 1 atm V= unknown n= 2.082 R= .0821 T = 273.15 K ( STP means 1atm and 273.15 K) V=(2.082)(.0821)(273.15)/(1) this...

1 Answers · Education & Reference · 18/11/2012

4. ### How to know what gas this is from this data?

correct the volume to STP at STP , one mole of gas occupies 22.4 L 22.4 L / (corrected volumes) = (molar mass) / 5.00 g

1 Answers · Education & Reference · 26/02/2013

5. ### stoichimetry! help me please :)?

ummm such an easy question and no answers, lol

1 Answers · Education & Reference · 21/01/2010

6. ### chemistry homework, need help?

CaCO3 = CaO + CO2 moles CO2 = 67.0 L/22.4 L/mol=2.99 moles CaCO3 = 2.99 mass CaCO3 = 2.99 mol x 100 g/mol= 299 g

1 Answers · Education & Reference · 12/10/2010

7. ### Chemistry 11 Help Please?

1. convert 0.2625 moles to grams using its molecular mass and dimensional analysis. then divide it by its density to get the volume occupied. 2. use ideal gas law. to get the number of moles of the gas. then divide it to 1.643 g.

1 Answers · Education & Reference · 23/10/2010

8. ### I'm searching for BUS 330 Final Paper Principles of Marketing, I need the response as soon as possible. Thank you!?

The response you are looking for is here http://study-exams.com/product/bus-330-final-paper-principles-of-marketing/?a=3

1 Answers · Education & Reference · 08/10/2014