Increasing concentrations of co2 in the atmosphere are leading to an increase in global-averaged surface temperatures, an increase in global-averaged ocean temperatures, and to acidification of the earth's oceans. using thermodynamic data in appendix a, and the following conditions for 1950 versus 2015, calculate the concentration of dissolved co2 in ocean water in 1950 versus 2015. ignore the effect of salinity on co2(aq) solubility (i. e., assume yco2 = 1). report your answers as mg/l of co2. (8 pts) (a) 1950 - pco2 = 300 ppmy; tseawater = 16°c (b) 2015 - pco2 = 400 ppmy; tseawater = 17°c

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.

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.