A sample of juice has a pH of 4.2. Whsat is the concentration in mol/dm3 of OH in the juice?
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Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh