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1. ### Help with chemistry! Using STP (22.4 L )?

... 2mol Na react with 1mol Cl2 Molar mass Na = 22.99g/mol 4.81g Na = 4.81/22.99 = 0.209mol Na From ...

2 Answers · Science & Mathematics · 28/02/2010

2. ### Gas Questions (Part 2)?

22. Use Boyle's Law: P1V1 = P2V2 where: P1... final pressure will be one-third the value of the initial pressure. 23. Use Boyle's Law P1V1 = P2V2 where: P1...

4 Answers · Science & Mathematics · 10/01/2011

3. ### What is the [ H+ ] in an acid rain sample that registers 3.22 using a pH meter?

10^-3.22 = 0.00060

1 Answers · Science & Mathematics · 13/11/2011

4. ### Why do we use 22.4 as the amount of moles per one liter of gas?

... not the number of moles in 1 L. Instead, 22.4 liters is the volume of 1.00 mol of any gas at standard temperature and pressure (STP). Try this calculation. Use PV=nRT to compute the volume of 1.00 mole at STP. V...

1 Answers · Science & Mathematics · 10/04/2008

5. ### 22. Calculate using the following reaction-be sure to balance the equation.?

Firstly there is no element called phosphorous , it is phosphorus! 4P + 5O2 ---> P4O10 Equation tells us you need 4 moles P for each P4O10 formed so 3.25 mol P4O10...

1 Answers · Science & Mathematics · 31/05/2011

6. ### the volume of one mole of any gas at STP is 22.4L. Calculate Are using these values.?

if its at STP you do 22.4L/273K Pressure is 1 atm so it doesnt really matter...

2 Answers · Science & Mathematics · 19/04/2011

7. ### What volume of 18.0 M sulfuric acid must be used to prepare 22.4 L of 0.195 M H2SO4? (Ignore sig. figures)?

22.4 L x 0.195 mole/L = 4.368 mole ? L x 18.0 mole/L = 4.368 mole ? L = 4.368 / 18.0 = 0.2427 L You need 242.7 mL of 18.0 M H2SO4

1 Answers · Science & Mathematics · 05/05/2010

8. ### What is the mass of KHP in a sample if 29.58 mL of 0.22 M NaOH are used in a titration? Molar mass of KHP is *?

moles of NaOH = .22 x 29.58 / 1000 = 0.00650 moles because KHP and NaOH react 1 : 1 moles of KHP = 0.0065076 so mass of KHP = 0.0065076 x 204.2 = 1.329g

1 Answers · Science & Mathematics · 20/11/2010

9. ### What is the mass of KHP in a sample if 29.58 mL of 0.22 M NaOH are used in a titration?**?

moles of NaOH = .22 x 29.58 / 1000 = 0.00650 moles because KHP and NaOH react 1 : 1 moles of KHP = 0.0065076 so mass of KHP = 0.0065076 x 204.2 = 1.329g

2 Answers · Science & Mathematics · 20/11/2010

10. ### Use the vapor-pressure curve in Figure 11.22 to estimate the external pressure under which ethyl alcohol will boil at 30°C.?

What "Figure 11.22"? Using the left-hand graph at https://en.wikipedia.org/wiki/Ethanol_%28data_page%29#Vapor_pressure_of_liquid instead: approximately 80 mmHg

1 Answers · Science & Mathematics · 20/04/2016