When people sleep, their metabolic rate is about 2.6 × 10

Introductory Chemistry 5
Is the precipitate in a precipitation reaction always a compound that is soluble or insoluble? Explain.

Introductory Chemistry 5
What are the main assumptions of kinetic molecular theory?

Earth Science 13
The circumference of Earth at the equator is 24,900 miles. Calculate how fast someone at the equator is rotating in miles per hour. If the rotational speed of Earth were to slow down, how might this impact daytime highs and nighttime lows?

Biology 8
The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the a. oxidation of glucose and other organic compounds. b. flow of electrons down the electron transport chain. c. affinity of oxygen for electrons. d. H+ concentration across the membrane holdi

Biology 8
Which ofthe following does not occur during mitosis? a. condensation of the chromosomes b. replication ofthe DNA c. separation of sister chromatids d. spindle formation e. separation ofthe spindle poles

Anatomy & Physiology 1
Iodide ions cross from the bloodstream into follicle cells via ________. a. simple diffusion b. facilitated diffusion c. active transport d. osmosis

Stats Modeling the World 4
Margin of error A medical researcher estimates the percentage of children exposed to lead-based paint, adding that he believes his estimate has a margin of error of about 3%. Explain what the margin of error means.

Principles of Economics 9
The experiment called the ultimatum game illustrates that people a. play the Nash equilibrium in strategic situations. b. are motivated by the desire for instant gratification. c. care about fairness, even to their own detriment. d. make decisions that are inconsistent over time.