How many ML is a Dram?

Chemistry Help? What is the number of moles of silver bromide produced from the reaction of 128.9 mL of 0.856?

• What is the number of moles of silver bromide produced from the reaction of 128.9 mL of 0.856 M silver nitrate with excess sodium bromide? Answer a. 110 mol b. 0.221 mol c. 0.110 mol d. 0.856 mol e. 0.345 mol How many grams of acetic acid ( HC2H3O2 ) are needed to neutralize 35.2 mL of 0.419 M of calcium hydroxide solution? Answer a. 0.419 g b. 1.77 g c. 0.884 g d. 4.19 g e. 44.2 g A 0.313-g sample of oxalic acid (H2C2O4), requires 26.21 mL of a particular concentration of NaOH(aq) to complete the following reaction. What is the molarity of the NaOH(aq)? H2C2O4(s) + 2NaOH(aq) ----> Na2C2O4(aq) + 2H2O(l) Answer a. 0.265 M b. 0.530 M c. 0.133 M d. 1.06 M e. 0.753 M 2 AgNO3(aq) + Na2S(aq) ----> Ag2S(s) + NaNO3(aq) How many grams of Na2S(s) are required to react completely with 27.8 mL of 0.163 M AgNO3 (refer to the equation above)? Answer a. 0.865 g b. 1.20 g c. 0.324 g d. 0.177 g e. 1.56 g What is the molarity of a sodium hydroxide solution if 35.4 mL of this solution is neutralized by 24.2 mL of 1.19 M sulfuric acid solution? Answer a. 0.814 M b. 0.407 M c. 1.63 M d. 0.204 M e. 1.26 M What is the molarity of 38.8 mL of phosphoric acid (H3PO4) that is needed to completely react with 45.1 mL of 0.152 M magnesium hydroxide solution? Answer a. 0.265 M b. 0.236 M c. 0.378 M d. 0.835 M e. 0.118 M How many grams of Ag2CrO4 will precipitate if excess K2CrO4 (aq) is added to a 41.5 mL of 0.816M AgNO3 solution? Answer a. 7.85 g b. 5.62 g c. 2.81 g d. 11.24 e. 5.56 g What is the volume of a 0.500M sulfuric acid solution required to neutralize 50.0 mL of 0.200M potassium hydroxide? Answer a. 10.0 mL b. 20.0 mL c. 50.0 mL d. 40.0 mL e. 35.0 mL For the reaction : Ca(OH)2(s) + 2HCl(aq) ----> CaCl2(aq) + 2H2O(l) How many grams of Ca(OH)2 are required to react with completely with 45.2 mL of 0.477M HCl? Answer a. 1.20 g b. 0.405 g c. 0.800g d. 1.65 g e. 3.55 g A 25.00-mL pipetful of 0.250 M K2CrO4 (aq) is added to an excess of AgNO3 (aq). What is the moles of Ag2CrO4 produced? Answer a. 0.250 mol b. 0.500 mol c. 0.125 mol d. 6.25 x 10-3 mol e. 3.00 mol Calculate the molarity of a magnesium hydroxide solution if 23.6 mL of solution is neutralized by 29.2 mL of 0.57 M hydrochloric acid solution. Answer a. 0.35 M b. 2.82 M c. 0.705 M d. 2.13 M e. 3.55 M Please help! 10points to whoever can help me!

• Answer:

  1/ n AgNO3 = V x M = 128.9 mL* 10^-3 x 0.856 mol/L = 0.110 mol Answer C