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while studying exothermic reactions, laura and her lab partner are instructed to add magnesium to hydrochloric acid. based on their math, the theoretical yield of magnesium chloride is 10.75 grams. they measured the mass of magnesium chloride at the conclusion of the reaction and found that 10.31 were produced. what is the percent yield?

a)104%
b)96%
c)91%
d)88%

What is the value of keq for the reaction expressed in scientific notation?

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.

How does climate change cause the ocean's thermohaline current to slow down?