PLEASE HELP WILL MARK BRAILIEST!!! A chemist reacts H2 with excess N2. The reaction yields 50 grams of NH3. However, you calculate you should have recovered 64 grams of NH3. What is the percent yield of the reaction? (Give two significant figures)

Percent Yield = % (Give two significant figures. For example, 2.2 has two significant figures)

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.

Most metamorphosis processes take place

What is the percent by mass of magnesium sulfate in mgso4.7h2o