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11. What is the concentration (in M) of an ammonia (NH3) solution if 12.23 grams of ammonia are
dissolved in enough water to make 560.0 mL of solution

Sagot :

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Answer:  1.284M NH3

Explanation:  (12.23 grams)/(17.0 gramms/mole) = 0.7191 moles

Dissolved in 560.0 ml (=0.5600L)

(0.7191 moles)/(0.560L) = 1.284M  (4 sig figs)

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