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.
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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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