Calculate the pH of a buffer prepared by the addition of 0.50 moles of sodium nitrite (NaNO2) to a 150.0 mL of 0.125 M nitrous acid (HNO2). Ka (HNO2) = 4.6 × 10-4

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces