7. A tablespoon of sucrose, C2H2,0,, is found to have a mass of 10.5 g. Assuming complete combustion via the following balanced reaction, how many liters of oxygen gas at STP
would need to be present to react with all of the sucrose?
1 C12H2201166) + 12 02/0) 12 CO2(0)
+ 11 H2O)
MM: (342) (32) (44) (18)

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .