what is the pressure of H2(g)? a. 1.59 mm Hg b. 1590 mm Hg c. 0.321 mm Hg d. 321

Question

what is the pressure of H2(g)? a. 1.59 mm Hg b. 1590 mm Hg c. 0.321 mm Hg d. 321 mm Hg e. 228 mm Hg The root mean square velocity of a sample of HCl gas is 350. m/s. What is the temperature of the gas? 3. a. 1.79 x105 K b. 8.38 x 10 K c. 1.81 x104 K d. 5.12 x10-1 K e. 1.79 x102 K 4. Which of the following will increase the pressure of Xe gas in a balloon? a. increase the volume and increase the temperature b. decrease the volume and decrease the temperature la unlume and decrease the temperature

Explanation / Answer

molar mass of HCl (M) is 36.5 gm / mole = 0.0365 Kg / mole

root mean square velocity = sqrt (3RT / M)

350. = sqrt (3* 8.314 * T / 0.0365)

(350.)2 = 3* 8.314 * T / 0.0365

T = 179.27 K

T = 1.79 * 10^2 K

so option E is the correct answer.

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