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1. ### Chemistry help, please.?

1.) (1 atm) x (609.0 + 273.15) K / (0 + 273.15) K = 3.23 atm 2.) (1.080 L) x (2.1 + 273.15) K / (20.9 + 273.15) K x (0.985 atm / 2.5 atm) = 0.398 L

2 Answers · Science & Mathematics · 19/10/2018

2. ### I need help with a couple of chemistry word problems.?

There is more N2 present than O2, so the partial pressure of N2 must be greater than the partial pressure of O2, so 227 torr for N2 cannot be correct. (270 torr O2) x (1.8 mol N2 / 1.2 mol O2) = 405 torr N2...

2 Answers · Science & Mathematics · 18/10/2018

3. ### If the density of an ideal gas at STP if found to be 1.25 g/L, what is its molar mass?

(1.25 g/L) x (22.414 L/mol) = 28.0 g/mol

2 Answers · Science & Mathematics · 15/10/2018

4. ### Assuming it behaves as an ideal gas, calculate the density of oxygen, O2 at STP?

(31.99886 g O2/mol) / (22.414 L/mol) = 1.4276 g/L

1 Answers · Science & Mathematics · 15/10/2018

5. ### Chemistry help?

2 Na + 2 H2O → H2 + 2 NaOH (2.00 g Na) / (22.98977 g Na/mol) x (1 mol H2 / 2 mol Na) x (22.414 L/mol) = 0.975 L H2

1 Answers · Science & Mathematics · 20/10/2018

6. ### When 0.05 mol of a monoalcohol is burned, 2.2 gramsof CO2 is produced. How many liters of oxygen gas are used at STP?

(2.2 g CO2) / (44.00964 g CO2/mol) = 0.04999 mol CO2 Every carbon atom in the alcohol produces one atom of CO2. (0.05 mol alcohol) / (0.04999 mol CO2) = 1 So the alcohol contains only one carbon atom, and so it is methanol. 2 CH3OH + 3...

2 Answers · Science & Mathematics · 06/10/2018

7. ### 1.35 g of an unknown gas at 63°C and 1.05 atm is stored in a 2.45L flask. what is the molar mass of gas *please help I'm on my last attempt*?

...ideal gas occupies a volume of 22.414L at standard temperature and pressure (STP). The ratio of the mass of a gas to the volume is the key to the solution...

3 Answers · Science & Mathematics · 29/09/2018

8. ### When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced.?

Supposing there is excess HCl: (5.30 g Al) / (26.98154 g Al/mol) x (3 mol H2 / 2 mol Al) x (22.414 L/mol) = 6.60 L H2

1 Answers · Science & Mathematics · 27/09/2018

At STP, the volume of one mole of a gas is 22.4 liters. Since we...

2 Answers · Science & Mathematics · 25/08/2018

10. ### Please Chem Help?

2 * 16.2 L Just use the coefficients in the balanced equation.

1 Answers · Science & Mathematics · 24/08/2018