Halcrow Yolles purchased equipment for new highway construction in Manitoba, Canada, costing $500,000 Canadian. The estimated salvage at the end of the expected life of 5 years is $50,000. Various acceptable depreciation methods are being studied currently. Determine the depreciation for year 2 using the DDB(Double Declining Balance), 150% DB(Declining Balance), and SL(Straight Line Depreciation) methods.

solute in a fixed volume of solution

Concentration(c) = number of moles of solute(n) / volume of solution (v)

25.0 mL of water is added to 125 mL of a 0.150 M LiOH solution and solution becomes more diluted.

original solution molarity - 0.150 M

number of moles of LiOH in 1 L - 0.150 mol

number of LiOH moles in 0.125 L - 0.150 mol/ L x 0.125 L = 0.01875 mol

when 25.0 mL is added the number of moles of LiOH will remain constant but volume of the solution increases

new volume - 125 mL + 25 mL = 150 mL

therefore new molarity is

c = 0.01875 mol / 0.150 L = 0.125 M

answer is 0.125 M

Explanation:

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