20 Question (1 point) 1st attempt The molar mass of a gas at STP is 92.0...
19 Question (1 point) 1st attempt i See A sample of argon gas at STP occuples 25.0 L. What mass of argon is present in the container?
The density of a gas is 1.25 g/L at STP. What is its molar mass? A) 22.4 g/mol B) 17.9 g/mol C) 28.0 g/mol D) 37.6 g/mol E) 41.6 g/mol please show work
The density of a gas is 0.803 g/L at STP. What is its molar mass? PICK ONE A 22.4 g/mol B 27.9 g/mol C 18.0 g/mol D 24.1 g/mol E 26.7 g/mol
Density and Molar Mass of a Gas Calculate the molar mass of the gas having a density of 0.179 g/L at STP. Use units of "g/mol Submit Answer Tries 0/5 e Post Discussion
If the density of an unknown gas is 1.95 g/L at STP what is the molar mass of the gas? (R = 0.0821 atmL/molek) A) 11.4 g/mol B) 22.4 g/mol C) 23.8 g/mol D) 43.7 g/mol E) 139 g/mol
-n Avogadro's Law and Molar Volume at STP (1.00 mole of any gas-22.4 L at STP) 11. ゴog Na × mol -1.78 mol n, 50.0 g of nitrogen (N2) has a volume of-一liters at STP. 18 met I mo V= 39.9 L 12. 1.00 x 10 g of oxygen (O2) is added to the gas in Question 11. What is the volume of the combined gases at STP? 13· What is the density of carbon dioxide at STP in grams...
* Question 7 * Incorrect. Did you use the mass of gas occupying the STP molar volume of 22.4 L to convert g to L. (found in hint)? What volume would result if a balloon were filled with 5.5 g of hydrogen gas at STP? 6.16 the tolerance is +/-2%
QUESTION 8 The density of a gas is 1.2 g/L at STP. What is its molar mass? a. 30 g/mol b. 27 g/mol c. 46 g/mol d. 18 g/mol e. 29 g/mol QUESTION 4 What is the oxidation half-reaction for the reaction of zinc with hydrochloric acid? Zn(s) + 2H+ (aq) + 2C1"(aq) → Zn2+(aq) + 2Cl(aq) + H2(8) O a. 2H +(aq) + 2e (aq) → H 2(3)+261 (aq) b. 2H +(aq) + 2e - → H2(g) OC. Zn(...
A gaseous sample of a compound has a gas density of 0.647 g/L at 694 torr and 20 °C. What is the 4. molar mass of this compound? If this compound contains only nitrogen and hydrogen, and is 82.2% nitrogen by mass, what is its molecular formula? 5. What is the density in g/L of neon gas at STP?
2. An unknown gas has a density of 0.714 g/L at STP. What is the molar mass of the unknown gas? 3. What is the molar mass of a gas if 0.891 liters at 20.0°C and 1.20 atm weighs 3.17 g? 4. Acetylene gas, CH2, reacts with oxygen gas to produce gaseous carbon dioxide and liquid water. Write the balanced equation for this reaction. What volume of CO2 is produced at STP from 5.00 g 02? 5. What is the...