True or false: Every positive integer is either prime or composite. Explain your answer

Chemistry: The Central Science 12
(a) Construct a Lewis structure for hydrogen peroxide, H2O,2, in which each atom achieves an octet of electrons. (b) Do you expect the O?O bond in H2O2 to be longer or shorter than the O?O bond in O2?

Chemistry 11
Calculate the number of C, H, and O atoms in 1.50 g of glucose \(\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)\), a sugar.

Myers' Psychology for AP 2
Which of the following best represents crystallized intelligence? a. Jake can solve math word problems quickly. b. Grandpa Milt is good at crossword puzzles. c. Aliyah has a knack for training dogs. d. Anna writes creative computer programs. e. Heng bakes excellent chocolate chip cookies.

Chemistry: The Molecular Nature of Matter and Change - Standalone book 7
Despite many attempts, the perbromate ion (BrO4 2) was not prepared in the laboratory until about 1970. (In fact, articles were published explaining theoretically why it could never be prepared!) Draw a Lewis structure for BrO4 2 in which all atoms have lowest formal charges.

Biology: The Dynamics of Life 1
Are all mixtures solutions? Are all solutions mixtures? Give an example.

Biology: Concepts and Applications 10
Which of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.

Urban Economics 8
Migration to Portland In the last several months, the number of cars driving in Portland with Washington State license plates has increased dramatically. Suppose this refl ects migration from Seattle to Portland. Use two utility curves, one for Portland and a second for Seattle, to represent this mig

Chemistry for today : general, organic, and biochemistry 9
Identify the 3' and 5' ends of the DNA segment AGTCAT.