A chemist adds 220.0 mL of a 3.36 mol/L sodium nitrate (NaNO 3 ) solution to a reaction flask. Calculate the mass in grams of sodium nitrate the chemist has added to the flask. Be sure your answer has the correct number of significant digits
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A chemist adds 220.0 mL of a 3.36 mol/L sodium nitrate (NaNO 3 ) solution to a reaction flask. Calculate the mass in grams of sodium nitrate the chemist has added to the flask. Be sure your answer has the correct number of significant digits
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- A soft drink contains an unknown mass of citric acid, C3H5O(COOH)3. It requires 6.42 mL of 9.580 × 10−2-M NaOH to neutralize the citric acid in 10.0 mL of the soft drink. C3H5O(COOH)3(aq) + 3 NaOH(aq) → Na3C3H5O(COO)3(aq) + 3 H2O(ℓ) Determine which step in these calculations for the mass of citric acid in 1 mL soft drink is incorrect? Why? n (NaOH) = (6.42 mL)(1L/1000 mL)(9.580 × 10−2 mol/L) n (citric acid) = (6.15 × 10−4 mol NaOH) × (3 mol citric acid/1 mol NaOH) m (citric acid in sample) = (1.85 × 10−3 mol citric acid) × (192.12 g/mol citric acid) m (citric acid in 1 mL soft drink) = (0.354 g citric acid)/(10 mL soft drink) Determine the correct result.A chemist prepares a solution of magnesium chloride MgCl2 by measuring out 2.3g of MgCl2 into a 250.mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Cl− anions in the chemist's solution. Be sure your answer is rounded to the correct number of significant digits.A chemist adds 295.0mL of a 1.21/molL aluminum chloride AlCl3 solution to a reaction flask. Calculate the mass in grams of aluminum chloride the chemist has added to the flask. Be sure your answer has the correct number of significant digits.
- A chemist prepares a solution of silver perchlorate (AgClO) by measuring out 440. g of silver perchlorate into a 100. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's silver perchlorate solution. Round your answer to 3 significant digits. Ú mol/L x10 XA chemist prepares a solution of potassium chloride (KC1) by measuring out 43. mg of KCl into a 50. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Canions in the chemist's solution. Be sure your answer is rounded to 2 significant digits. 0 mol L x10 X ŚA chemist prepares a solution of nickel(II) chloride NiCl2 by measuring out ×1.010^2μmolof nickel(II) chloride into a 350.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's nickel(II) chloride solution. Be sure your answer has the correct number of significant digits.
- A chemist adds 145.0 mL of a 0.00260 mol/L calcium sulfate (CaSO) solution to a reaction flask. Calculate the millimoles of calcium sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits. |mmol Ox10A chemist prepares a solution of magnesium fluoride (MgF, by measuring out 0.032 umol of magnesium fluoride into a 450. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in umol/L of the chemist's magnesium fluoride solution. Be sure your answer hås the correct number of significant digits, u mol LA chemist prepares a solution of silver nitrate (AgNO3) by measuring out 121. g of silver nitrate into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's silver nitrate solution. Be sure your answer has the correct number of significant digits. Ú mol/L x10 X
- A chemistry student weighs out 0.0909g of hypochlorous acid HClO into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1400M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits.A chemist prepares a solution of nickel (II) chloride (NiC1₂) by measuring out 250. g of nickel (II) chloride into a 400. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's nickel (II) chloride solution. Be sure your answer has the correct number of significant digits. mol/L x10 ŚA chemist prepares a solution of mercury (I) chloride (Hg₂Cl₂) by measuring out 1.96 mg of mercury(I) chloride into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's mercury(I) chloride solution. Be sure your answer has the correct number of significant digits. mol/L x10 X S