During chemistry lab, one lab group decomposes potassium chlorate to collect oxygen gas by water
displacement. the total volume is 220 milliliters and is collected at a pressure of 101 kpa at 24°c. the vapor
pressure of water at 24°c is found to be 2.98 kpa.
what is the pressure of the oxygen collected?
a)
98.02 kpa
98.2 kpa
101,20 kpa
104.28 kpa

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What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

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