Match the factors which affect the rate of dissolving/dissociation. 1. increased surface area . 2. like polarity increases rate . 3. temperature 4. stirring . a)rate proportional to k. e.. b)concentration decreases around solute. c)finely divided solute. d)matching solvent and solute

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

Water is a highly important natural resource. which of these would be the best method to conserve water? a) drinking bottled water b) monitoring the ph of rivers c) treating and re-using wastewater d) testing nitrate levels in groundwater

If a computer chip switches off -on-off in 0.015 us, what is the switching time in nanoseconds?