8.00 L of a gas is known to contain 0.789 mol. if the amount of gas is increased to 1.60 mol the new volume will be 8.2 L at an uncharged temperature and pressure

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

Hey can you me with this i really need y’all

What is the percent by mass of oxygen in fe2o3