Please answer the following questions and show your work! How many mole of NaCl

Question

Please answer the following questions and show your work!

How many mole of NaCl are contained in 0.2570 L of a 37.5 mM totulion of NaCI 1.46 * 10^-1 mole 9.64 * 10^-3 mole 278.0 mole 126.5 mole 6.85 mole Given an aqueous stock solution that is 7.47% by weight (w/v) lead(ll)chloride, how many milliliters of ilui solution must you take to obtain 8.65 g of PbCl_2 116 ml. 115.8 mL. 86.36 mL. 86.4 mL It is not possible to obtain 8.65 g of 7.47% stock solution of PbCl_2 Given that the molar mass of Pb is 207.19 g/mol and Cl is 35.453 g/mol. what is the molar concentration of the solution in problem 2 0.268 M 0.308 M 0.536 M 0.616.M 2.08 * 10^1 M Which of the following is the conjugate hose of the H_2Po_4,ion H_2PO_4 H_2PO_4 HPO_4 PO_4 O_4 The pOH of a glamss of your favorite energy drink is 9.47. What is the concentration hydronium (H^+)ions present in this solution 4.53 * 10^-4 M 2.95 * 10^-3M 3.0 * 10^3 M 3.39 * 10^12 M 3.4 * 10^-10 M

Explanation / Answer

1)
M = 37.5 mM = 0.0375 M
V = 0.2570 L

Moles of NaCl = M*V
= 0.0375 * 0.2570
= 9.64*10^-3 mol
Answer: B

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