Chemistry, 10.12.2020 21:50 Lilbre9444
“When a car turns,” a friend states, “the less friction the better, because friction just slows you down.” How would you respond to your friend’s claim?
Answers: 2
Chemistry, 21.06.2019 23:30
Start an single atom tab. observe the decay of polonium-211. after each decay, press the reset nucleus button to watch the process again. write a description of alpha decay for po-211
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 17:30
A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159
Answers: 2
Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
Answers: 1
“When a car turns,” a friend states, “the less friction the better, because friction just
slows you...
Mathematics, 26.01.2021 04:00
Chemistry, 26.01.2021 04:00
English, 26.01.2021 04:00
Health, 26.01.2021 04:00
English, 26.01.2021 04:00
Mathematics, 26.01.2021 04:00
Mathematics, 26.01.2021 04:00
Mathematics, 26.01.2021 04:00
Computers and Technology, 26.01.2021 04:00
History, 26.01.2021 04:00
Physics, 26.01.2021 04:00
Social Studies, 26.01.2021 04:00
Mathematics, 26.01.2021 04:00