How many grams of Cu will be produced if 15.8 grams of Cu2S got consumed?
Cu, S + O2 + 2Cu + S...
Chemistry, 01.03.2021 03:00 skyefricke1139
How many grams of Cu will be produced if 15.8 grams of Cu2S got consumed?
Cu, S + O2 + 2Cu + SO2
Answers: 3
Chemistry, 21.06.2019 20:50
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
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 18:00
An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³
Answers: 2
Mathematics, 03.08.2019 12:30
Mathematics, 03.08.2019 12:30
Social Studies, 03.08.2019 12:30
Health, 03.08.2019 12:30
Mathematics, 03.08.2019 12:30
Mathematics, 03.08.2019 12:30
Geography, 03.08.2019 12:30
Mathematics, 03.08.2019 12:30
Mathematics, 03.08.2019 12:30