9. Aluminum hydroxide reacts with sulfuric acid in a water-forming reaction.
a) If 0.500 mole of each reactant is present, which reactant is limiting?
b) What mass of aluminum sulfate will be produced in this reaction?
c) What mass of excess reactant will remain?
d) If 50.0 g of aluminum sulfate is produced in this reaction, what is the percent yield?

How can you use chemical equations to predict the products of the reaction you can carry out?

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.

Which statement best describes the function of enzymes?