Chemistry, 21.04.2020 15:51 adeline12401
Which of the following statements is TRUE? Question 1 options: There is a "heat tax" for every energy transaction. A spontaneous reaction is always a fast reaction. The entropy of a system always decreases for a spontaneous process. Perpetual motion machines are a possibility in the near future. None of these are true.
Answers: 1
Chemistry, 22.06.2019 03:00
Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?
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 β 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 β 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100β°c, how much steam at 100β°c is produced? show all calculations leading to an answer. 10. the freezing of water at 0β°c can be represented as follows: h2o (l) β h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 β 4 sentences explain why applying pressure causes ice to melt.
Answers: 1
Chemistry, 22.06.2019 13:00
Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.
Answers: 1
Which of the following statements is TRUE? Question 1 options: There is a "heat tax" for every energ...
Computers and Technology, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Physics, 07.12.2020 08:30
Chemistry, 07.12.2020 08:30
English, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
English, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30
Mathematics, 07.12.2020 08:30