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1. ### A 676 mL gas sample at STP is compressed to a volume of 157 mL, and the temperature is increased to 27◦C. What is the new pressure...?

A 676 mL gas sample at STP is compressed to a volume of 157 mL, and the temperature ...

1 Answers · Science & Mathematics · 28/11/2020

2. ### When a 0.0572g strip of Mg is reacted with excess HCl, 52.0 mL of gas is collected over water in a eudiometer...?

Mg + 2HCl ---> MgCl2 + H2 ------------- Mg to H2 molar ratio is 1 to 1, so moles of H2 produced equals moles of Mg consumed. 0.0572 g / 24.305 g/mol = 0.00235 mol The answer is...

2 Answers · Science & Mathematics · 24/11/2020

3. ### How many liters of CO2 are formed at STP by the complete combustion 19.0 L of the propane at a pressure of 5.0 atm and 27 ∘C?

...@ / 1 mol C3H8)*3.9 moles propane = 11.7 mol At STP , 1 mole any gas will occupy 22.4 L volume of CO2, at STP , will...

2 Answers · Science & Mathematics · 21/11/2020

4. ### Chemistry question about CaC2?

CaC2 + 2 H2O → C2H2 + Ca(OH)2 2 C2H2 + 5 O2 → 4 CO2 + 2 H2O If there is 15% impurities, then the fraction of pure CaC2 is 85%.  Supposing these percentages to be by mass...

1 Answers · Science & Mathematics · 22/11/2020

5. ### Chemistry yield?

At STP , 1 mol of gas occupies 22.4 L. So, 4 L X (1...

1 Answers · Science & Mathematics · 18/11/2020

6. ### Given the following reaction: 2 TiCl4 (g)  +  H2 (g) → 2 TiCl3 (s)  +  2 HCl (g)?

a) n = PV / RT = (795 mmHg) x (155 L) / ((62.36367 L mmHg/K mol) x (435 + 273) K) = 2.7908 mol H2 (2.7908 mol H2) x (2 mol TiCl4 / 1 mol H2) x (189.679 g TiCl4/mol) = 1060 g TiCl4 b) (2.7908 mol H2) x (2...

1 Answers · Science & Mathematics · 16/11/2020

7. ### Chemistry Question?

Convert the % of each element to grams For example, a molecule has a molecular weight of 180.18 g/mol. It is found to contain 40.00% carbon, 6.72% hydrogen and 53.28% oxygen. Convert the percentages to grams. 40.00 grams of carbon...

1 Answers · Science & Mathematics · 11/11/2020

8. ### Chlorine is widely used to purify municipal water supplies and to treat swimming pool water. Suppose that the volume ?

... 70.9 g/mol = 29.7 g Cl2 To calculate the volume of gas at STP , you can either calculate it using:P1V1/T1 = P2V2/...

1 Answers · Science & Mathematics · 27/10/2020

9. ### Convert 31.6 liters of N2 to atoms?

Assuming STP ===  1.7 x 10^24

2 Answers · Science & Mathematics · 18/10/2020

10. ### Place the following gases in order of increasing density at STP . Hint: Think about the Molar Volume at STP , & Molar Mass. F2 NH3 N2O4 Ar?

The molar volume is the same for all gases.  So the density depends only on the molar mass. Answer D) shows the gases in order of increasing molar mass, so they are also in order of increasing density.

1 Answers · Science & Mathematics · 18/10/2020