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1. ### What is the volume, in liters, occupied by 2.12 moles of N2 gas at 0.745 atm pressure and a temperature of 55°C?

Ideal gas law PV = nRT n = number of moles R = gas constant = 0.08206 (atm∙L)/(mol∙K) T = temperature in ...

5 Answers · Science & Mathematics · 05/06/2019

2. ### A metal ball-bearing with a circumference of 43.1 mm weighs 12.1 g. What is the density of the metal in g/cm3?

...since a circle is what you get when you bisect a sphere through it's center: 2πr, where r is the radius. Solve this equation (C = 2πr) for the radius...

1 Answers · Science & Mathematics · 12/09/2019

3. ### Find Vapor Pressure?

... Clapeyron equation ln(P1/P2) = ΔHvap / R x (1/T2 - 1/T1) P1/P2 = e^(ΔHvap / R...

1 Answers · Science & Mathematics · 03/03/2019

...g Molar mass, M = 16.0×2 g/mol = 32.0 g/mol Gas constant, R = 0.08206 L atm / (mol K) Temperature, T = (273 + 27...

1 Answers · Science & Mathematics · 22/11/2019

5. ### What is the wavelength (in nm) of a photon of electromagnetic radiation emitted when an electron relaxes from the n=3to the n=2energy level?

...t mention the element, so we will assume you mean hydrogen. n=3 --> n=2 E = -R(1/n²) ΔE = -R (1/n²(f) - 1/n²(i...

1 Answers · Science & Mathematics · 15/09/2019

6. ### If 3.22 mol of an ideal gas has a pressure of 2.99 atm and a volume of 62.99 L, what is the temperature of the sample in degrees Celsius?

... to calculate the temperature in ˚K. P * V = n * R * T R = 22.4 ˚ 273 2.99 * 62.99 = 3.22 * (22.4 ÷ 273) * ...

3 Answers · Science & Mathematics · 23/07/2019

7. ### What s the radius of a cylinder that is 1.80 cm long and has a mass of 13.4 g . For a cylinder, V=πr2l. (The density is 2.70 g/cm3.)?

V = mass / density = 4.9630 cm^3 r^2 = V/(πl) = 0.8776 --->r =0.94 cm

1 Answers · Science & Mathematics · 29/08/2019

8. ### Significant figures?

...0.01) / (15.6 +/- 0.14) = 2.94 +/- ??? The uncertainty in division is... δR = R(√(δX/X)² + (δY/Y)²) δR...

2 Answers · Science & Mathematics · 23/05/2019

9. ### The rate constant of a reaction at 32 ∘C was measured to be 5.2×10−2 s−1?

... = frequency factor Ea = activation energy (J/mol) or (kJ/mol) R = 0.008314 kJ/mol•K T = temperature (K) 32°C = (273...

1 Answers · Science & Mathematics · 24/02/2019

10. ### certain mass of nitrogen gas occupies a volume of 3.92 L at a pressure of 4.36 atm.?

...the data, chug out the results.. remember T must be absolute.. K or R... never °C nor °F ********** this problem start with .. P1V1 (...

2 Answers · Science & Mathematics · 23/07/2019