Ammonia, NH3 (Delta. Hf = –46.2 kJ), reacts with oxygen to produce water (Delta. Hf = –241.8 kJ) and nitric oxide, NO (Delta. Hf = 91.3 kJ), in the following reaction: 4 upper N upper H subscript 3 (g) plus 5 upper O subscript 2 (g) right arrow 6 upper H subscript 2 upper O (g) plus 4 upper N upper O (g). What is the enthalpy change for this reaction? Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants.. –900.8 kJ –104.6 kJ 104.6 kJ 900.8 kJ
Answers: 1
SAT, 23.06.2019 09:00
When graphing a linear equation that is written in the form y=mx+b, the variable m represents the y-intercept. assuming that b> 0, which of the following best describes how reversing the sign of b would affect the graph? a) the new line will be shifted down b units b) the new line will be shifted down b x 2 units c) the new line will be a perfect reflection across the x-axis d) the new line will be a perfect reflection across the y-axis
Answers: 2
SAT, 24.06.2019 11:00
Carlo is wondering what causes plants to grow at different rates. carlo’s hypothesis is “plants will grow more when the day is longer.” what would be the difference between the test group and the control group in this experiment? type of soil type of plants exposure to sunlight method for measuring the growth
Answers: 2
SAT, 24.06.2019 15:00
All of the following are free tools to you prepare for the sat except
Answers: 2
SAT, 27.06.2019 02:30
Which will you likely have to provide on a college applications. a.) personal information, b.) parents level of education, c.) career plans, d.) employment history
Answers: 1
Ammonia, NH3 (Delta. Hf = –46.2 kJ), reacts with oxygen to produce water (Delta. Hf = –241.8 kJ) and...
Mathematics, 20.11.2020 23:10
Mathematics, 20.11.2020 23:10
History, 20.11.2020 23:10
English, 20.11.2020 23:10
Mathematics, 20.11.2020 23:10
Chemistry, 20.11.2020 23:10
English, 20.11.2020 23:10
History, 20.11.2020 23:10
Mathematics, 20.11.2020 23:10
Mathematics, 20.11.2020 23:10