Sugar is added to iced tea and the contents are stirred until all of the sugar dissolves. How would the tea now be classified? A. It is a solution
B. It is an element. C. It is a compound D. It is a pure substance

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization. a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution. part bcalculate the percent ionization of ha in a 0.010 m solution

Which of the following is a physical change? a. burning a piece of wood b. sawing a piece of wood in half c. rust forming on an iron fence d. a copper roof changing color from orange to green

Which of the following is described by the equation h2o(s)+ heat=h2o(i) a freezing melting condensing evaporating