How can determine the numbers of oxygen atoms
Determine the numbers of oxygen atoms are in the 53.5 g of calcium phosphate? Express your answer to the correct number of significant figures. Describe whether you would expect the same number of oxygen atoms in the 53.5 g of sodium phosphate.
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The mean score of the college entrance test is 400; the standard deviation is 70. The scores are normally distributed. Determine the probability of selecting a student who scored above 300?
By assuming the complete reaction, determine what volume of .200 mol dm-3 HCl (aq) is needed to neutralize the 25.0cm 3 of .200 mol dm-3 Ba(OH)2 (aq).?
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At 910 mmHg and 36 oC a cylinder with a movable piston contains a 1024 ml sample of argon gas, determine the numbers of moles of gas are in the sample? Make sure to express the answer to the correct number of significant figures.
What are the molarity and the molality of sucrose in this solution when a 10.0% aqueous solution of sucrose (C12H22O11) by mass has a density of 1.040 g/ml.
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Calculate the molar mass of the acid when a 0.2688-g sample of a monoprotic acid neutralizes the 16.4 mL of0.8133 M KOH solution.
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