Answers: 3
Chemistry, 22.06.2019 00:30
Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?
Answers: 2
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 11:30
What is the main reason why some developing countries fear the increase the free trade policies around the world?
Answers: 2
Chemistry, 22.06.2019 22:00
Imagine one batch of soup (batch “a”) is made with 8.19 g/can of salt, according to the recipe, and a second batch of soup (batch “b”) is made with 8.32 g/can of salt. explain which batch would be more resistant to frost damage if it is shipped a great distance in winter and explain why.
Answers: 2
Mechanical energy is found by kinetic energy and potential energy....
History, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10
History, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10
English, 01.10.2019 03:10
English, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10
English, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10
Mathematics, 01.10.2019 03:10