What is the percent by mass of C in oc-
tane (C8H18)? The molecular weight of
carbon is 12.01...
Chemistry, 02.03.2021 06:40 marahsenno
What is the percent by mass of C in oc-
tane (C8H18)? The molecular weight of
carbon is 12.0107 g/mol and of hydrogen
1.00794 g/mol.
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 15:00
Answer explain why it is not possible to deduce a complete order of reactivity.
Answers: 3
Chemistry, 22.06.2019 18:50
At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver
Answers: 1
Chemistry, 03.01.2020 16:31
Mathematics, 03.01.2020 16:31
Geography, 03.01.2020 16:31
Mathematics, 03.01.2020 16:31
Social Studies, 03.01.2020 16:31
Advanced Placement (AP), 03.01.2020 16:31
Mathematics, 03.01.2020 16:31
Physics, 03.01.2020 16:31
Social Studies, 03.01.2020 16:31
Mathematics, 03.01.2020 16:31
Health, 03.01.2020 16:31