Chemistry, 26.04.2021 22:00 bradenhale
Identify the equations that show ionization. Check all that apply.
Upper N a upper C l (s) right arrow upper N a superscript plus (a q) plus upper C l superscript minus (a q).
Upper H upper C l (g) plus upper H subscript 2 upper O (l) right arrow upper C subscript 3 upper O superscript plus (a q) plus upper C l superscript minus (a q).
Upper O subscript 2 (g) right arrow upper O subscript 2 (a q).
Upper C upper O subscript 2 (g) plus 2 upper H subscript 2 upper O (l) right arrow upper H upper C upper O subscript 3 superscript minus (a q) plus upper H subscript 3 upper O superscript plus (a q).
Upper C a upper C l subscript 2 (s) right arrow upper C a superscript 2 plus (a q) plus 2 upper C l superscript minus (a q).
Answers: 3
Chemistry, 22.06.2019 01:50
7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '
Answers: 1
Chemistry, 22.06.2019 05:30
A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.
Answers: 1
Chemistry, 22.06.2019 20:00
What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?
Answers: 1
Chemistry, 22.06.2019 21:30
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
Answers: 2
Identify the equations that show ionization. Check all that apply.
Upper N a upper C l (s) right a...
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