Question 19 2 Points A student wants to prepare one litre solution of 1 molar potassium hydroxide (KOH - Molecular weight: 56.1 g/mol). The KOH available in the lab is 85% pure with 15% water in it. How much grams of KOH should be weighed to prepare a litre of 1 molar KOH solution? (A) 47.69 (B) 56.1 66.00 D 100.00 Question 20 2 Points Every day a professor boils 250 ml of drinking water (density= 1 g/cm3) for making a cup of tea. The water contains 0.6grams/litre salt content. All the water is poured after boiling and all the salt within the water precipitates and is stuck within the kettle. How much salt would have precipitated in the kettle by the end of 240 days? (A) 0.15 g B 0.6 g 36 g D 240 g