b. + HBr + HI H₂O H₂SO4

Part A Constants I Periodic A 0.5880 g sample of impure magnesium hydroxide is dissolved in 102.0 mL of 0.2044 M HCl solution. The excess acid then needs 19.88 mL of 0.1039 M NaOH for neutralization. Calculate the percent by mass of magnesium hydroxide in the sample, assuming that it is the only substance reacting with the HCl solution. Express your answer using four significant figures. ΜΕ ΑΣΦ Submit Request Answer Provide Feedback LG Backspace F12 1 ? % Delete End Down Next >

Please help me answer questions 1 and 2. (Questions attached below) 1. When you arrive at the lab, 2.0 M H2SO4(aq) and 2.0 M HC2H3O2(aq) will be present. Youwill need to dilute these solutions using beakers and graduated cylinders from your drawerand DI water.i. Calculate the volume of the 2.0 M HC2H3O2(aq) and DI water needed to create 50.0 mLof 1.05 M HC2H3O2(aq).ii. Calculate the volume of the 2.0 M H2SO4(aq) and DI water needed to create 50.0 mL of0.75 M H2SO4(aq). 2. A 48.33-mL sample of 0.150 M NaBr is titrated into 50.00 mL of 0.145 M AgNO3. Bothsolutions had the same initial and final temperatures. The reaction occurred in a calorimeterwith a known heat capacity and produced 1546.03 J of heat.i. Write a balanced equation that is occurring.ii. Determine the theoretical yield of the solid.iii. Calculate the enthalpy of the reaction (kJ/mole of precipitate).

By pipet, 9.00 mL of a 0.823 M stock solution of potassium permanganate (KMNO4) was transferred to a 50.00-mL volumetric flask and diluted to the calibration mark. Determine the molarity of the resulting solution. HA Value Units

H9SO4. H,SO4(aq)

A solution is prepared by pipetting 25.00 mL of 3.0 x 10-4 M CaCl2 into a 750.00 mL volumetric flask and then adding water to the calibration mark. What is the concentration?

·00 ol OH 0 ■ OH % 1. C.H.LI, THF 2. H₂O Products SH F

Calculate the volume of 0.164 M HNO3 required to neutralize 25.0 mL of 0.250 M NaOH to the correct number of significant figures

During a titration the following data was collected. A 50.0 mL portion of H2SO4 was titrated with 0.500 M KOH. 200. mL of the base was needed to neutralize the acid. Calculate the molarity of the acid

If 53.0 g of KClO3 was transferred into 125.0 g of water at 30.0 celcius. how many grams of KClO3 will percipitate? g solute at 30.0 celcius is 10 grams