Nitrosyl bromide decomposes according to the following equation. 2nobr (g) 2no (g) br2 (g) a sample of nobr (0.64 mol) was placed in a 1.00-l flask containing no no or br2. at equilibrium the flask contained 0.46 mol of nobr. how many moles of no and br2, respectively, are in the flask at equilibrium
Answers: 2
Chemistry, 21.06.2019 20:30
The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?
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 08:30
7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.
Answers: 1
Nitrosyl bromide decomposes according to the following equation. 2nobr (g) 2no (g) br2 (g) a sample...
Mathematics, 24.04.2021 09:30
Mathematics, 24.04.2021 09:30
Computers and Technology, 24.04.2021 09:30
Mathematics, 24.04.2021 09:30
English, 24.04.2021 09:30
English, 24.04.2021 09:30
Mathematics, 24.04.2021 09:30
Mathematics, 24.04.2021 09:30
History, 24.04.2021 09:40
Physics, 24.04.2021 09:40