Math
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Math. Express each answer in the with the correct significant digits, in scientific notation and the proper units. a. An empty crucible has a mass of 25.70 g. After some sodium bicarbonate is added, the mass is 28.855 g. What is the mass of sodium bicarbonate in the crucible? b. A solution is prepared by adding 1.77 grams of sodium nitrate, 2.4 grams of potassium chloride and 0.973 grams of ammonium nitrite to 255 grams of water. Calculate the total mass of the solution?
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Q.6.a> mass of sodium bicarbonate in the crucible = Total final mass - mass of empty crucible = 28.855 - 25.70 = 3.16g (correct significant figure applied)
=> with scientific notation the answer will be = 3.16 * 100 g
Q.6.b> Total mass of the solution = sum of all the masses = 1.77 + 2.4 + 0.973 + 255 = 260g (correct significant figure upto 3 digit)
=> with scientific notation the answer will be = 2.60 * 102 g
