Chemistry, 12.04.2021 21:50 bentonknalige
12.
According to the image below, which of the following forms because of high heat and
pressure?
Pressure & Cementation
Years of erosion
Sedimentary
rock layers
Sediments
Heat
Pressure
Erosion
Metamorphic
rocks
Heat & Pressure
Igneous
rocks
Heat
Cooling
Magma
Chamber
(1 point)
Answers: 3
Chemistry, 22.06.2019 05:30, MansellS5529
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 06:00, citlalli30
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
12.
According to the image below, which of the following forms because of high heat and
press...
press...
Mathematics, 05.11.2020 17:00
English, 05.11.2020 17:00
English, 05.11.2020 17:00