3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCI ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample?

If a 7.0 mL sample of vinegar was titrated to the stoichiometric equivalence point with 7.5 mL of 1.5M NaOH, what is the mass percent of CH3COOH in the vinegar sample? Show your work.

It is desired to prepare 600 mL of 0.250 normal Ba(OH)2 for use in the reaction:2 HCl + Ba(OH)2  BaCl2 + 2 H2OHow many grams of Ba(OH)2 are needed?

[1pt] A 0.86 M HCl solution is available in the laboratory. How much DI water is needed to prepare 15.0 mL of a 0.18 M HCI solution?

what volume of 0.250 M NaOH is required to react completely with 0.0100 moles of H2SO4?

A student mixes 10.0 mL of 0.250 M Pb(N03)2 with 10.0 mL of 0.250 M NaCl. What is the most amount of product (in mmols) that you would expect as a theoretical maximum to be produced by this reaction? Report your answer in millimols to 3 decimals

What quantity in moles of C₂H₅OH are there in 77.2 mL of 0.250 M C₂H₅OH?

Please answer it all with solutions

It is desired to prepare 600 mL of 0.250 normal Ca(OH)2 for use in the reaction:2 HCl + Ca(OH)2  CaCl2 + 2 H2OHow many grams of Ca(OH)2 are needed?

The antacid found in Tums™ has the active ingredient calcium carbonate, which undergoes a reaction when mixed with hydrochloric acid to produce water, calcium chloride and carbon dioxide. A tablet of this antacid had a mass of 1.774g and was dissolved completely in an excess of 30.0mL of 0.794M HCl. The resulting solution was then titrated with 0.995M NaOH. The initial buret reading was 11.05mL and the final buret reading was 28.52mL. The listed mass of active ingredient on the bottle is 325mg. a. What is the calculated mass of active ingredient in this tablet? b. What is the percent error from the listed mass? c. What percent of the tablet is inert (non-active) ingredients? explain in detail