Three please and if possible can you show units? Thanks! Assume that all gases obey the Ideal Gas Law. Use separate paper.1A leak in a sealed room (T = 23°C) of a space station was observed when the pressure dropped 0.94 to0.87 atm.a) What percentage of the air content was lost?b) The room is 3 m x 3 m x 5 m. What mass of air must be reintroduced in the room to restore thepressure after the leak has been repaired? (Air average MW = 28.97 g/mol)c) They wish to transport this air from earth in a 30.0L container that can withstand an internalpressure of 125 atm. What is the maximum temperature that this cylinder can be exposed to beforeit explodes?2. a) A 2.00L flask is evacuated and weighted (224.573 g). It is filled with an unknown gas (weight =227.274 g) and the internal pressure (P = 311 mm Hg) measured at 22.4°C. What is the molecularweight of the gas?b) Elemental analysis reveals that the gas contains only sulfur and oxygen. What is the formula of thegas (use your knowledge of atomic theory)?3. A dilute HCI solution is added to sodium carbonate in a closed flask (5.0 L). After the temperatureequilibrates (T = 21°C) the pressure is measured (P = 550 mm Hg). What mass of sodium carbonatewas in the flask? (The volume of acid is negligible but in excess, NazCO3 105.99 g/mol) (Hint: find thereaction of carbonate and acid).4. At the zoo, you witness a skunk uses its defence mechanism. There was no wind on that beautiful day(T = 25°C) and you were located 10 m from the animal. You detected the smell of the mercaptan(C,HgS, MW 88.16 g/mol) 133 sec later. What total distance did an average molecule of mercaptantravel before you detected it? (hint: careful with the units, see L29-3).

3. HCl reacts with Na2CO3 as per the following chemical reaction:…

A dilute HCI solution is added to sodium carbonate in a closed flask (5.0 L). After the temperature equilibrates (T = 21°C) the pressure is measured (P = 550 mm Hg). What mass of sodium carbonate was in the flask? (The volume of acid is negligible but in excess, NazCO3 105.99 g/mol) (Hint: find the reaction of carbonate and acid).

A dilute HCI solution is added to sodium carbonate in a closed flask (5.0 L). After the temperature equilibrates (T = 21°C) the pressure is measured (P = 550 mm Hg). What mass of sodium carbonate was in the flask? (The volume of acid is negligible but in excess, NazCO3 105.99 g/mol) (Hint: find the reaction of carbonate and acid).

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 5.90PAE

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