Explain the concept: Law of Multiple Proportions.
Short and simple please...
Chemistry, 06.04.2020 05:30 WOLFIEPOOF
Explain the concept: Law of Multiple Proportions.
Short and simple please
Answers: 3
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 08:30
For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)
Answers: 2
Chemistry, 22.06.2019 09:30
In 2002, the rare earth elements mine in mountain pass, california was closed because
Answers: 1
Chemistry, 22.06.2019 10:00
How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?
Answers: 1
Mathematics, 18.07.2019 08:00
Biology, 18.07.2019 08:00
Mathematics, 18.07.2019 08:00
English, 18.07.2019 08:00
Arts, 18.07.2019 08:00
Arts, 18.07.2019 08:00
English, 18.07.2019 08:00
Mathematics, 18.07.2019 08:00
Mathematics, 18.07.2019 08:00
Mathematics, 18.07.2019 08:00
Mathematics, 18.07.2019 08:00
English, 18.07.2019 08:00
History, 18.07.2019 08:00
Mathematics, 18.07.2019 08:00