QUESTION 4 Suppose that you take a sample of 750 g of ocean water and let the water evaporate. The mass of the remaining salts is 15 g. What was the salinity of the ocean water? Ⓒ34% 28 % 20% 45 % QUESTION 5 If the salinity of ocean water is 12 % what is the mass of salts dissolved in 2 kg of ocean water? 24g 87g 59g 68g QUESTION 6 Which hemisphere, Northern or Southern, could be called the "water" hemisphere? Southern Northern

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