Answer to Question #55444 in General Chemistry for joe

Question #55444
17 Which is of higher concentration; 1 molal solution or 1 molar solution None of the above 1 molal solution 1 molar solution They are equivalent 18 A solution contains 4 grams of sodium hydroxide in 250ml of solution. If Na=23, O=16 , H=1 and 1cm3 of water weighs1g, what is the concentration of the solution in weight per weight percent? 2.81% 1.92% 1.57% 3.29% 19 A solution contains 4 grams of sodium hydroxide in 250ml of solution . If Na=23, O=16, H=1 and 1cm3 of water weighs 1g, what isthe concentration of the solution in grams per dm3 ? 12 14 16 18 20 What is a standard solution? Solution that has been weighed Solution which has a concentration that is accurately known Solution that has one standard amount dissolved in water Solution that is very distinct in its properties
Expert's answer
17. 1 molar solution (only for solvents with density not less than 1 g/mL)
18. 1.57%
19. 16 g/L
20. Solution which has a concentration that is accurately known

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