subject
Chemistry, 20.09.2020 15:01 marcitahr

Consider the following intermediate chemical equations. 3 equations. 1: upper C solid plus upper o subscript 2 gas right arrow upper C upper O subscript 2 gas Delta H 1 equals negative 393.5 kilojoules. 2: 2 upper C upper O gas plus upper O subscript 2 gas right arrow 2 upper C upper O subscript 2 gas Delta H 2 equals negative 566.0 kilojoules. 3: 2 upper H subscript 2 upper o gas right arrow 2 upper H subscript 2 gas plus upper O subscript 2 gas delta H 3 equals 483.6 kilojoules. The overall chemical equation is Upper C (s) plus upper H subscript 2 upper O (g) right arrow upper C upper o (g) plus upper H subscript 2 (g).. To calculate the final enthalpy of the overall chemical equation, which step must occur? Reverse the first equation, and change the sign of the enthalpy. Then, add. Reverse the second equation, and change the sign of the enthalpy. Then, add. Multiply the first equation by three, and triple the enthalpy. Then, add. Divide the third equation by two, and double the enthalpy. Then, add.

ansver
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 17:00, porkhappycom
This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?
Answers: 1
image
Chemistry, 22.06.2019 10:30, xojade
Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
Answers: 1
image
Chemistry, 22.06.2019 13:30, Axe15x
Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves
Answers: 1
image
Chemistry, 22.06.2019 14:30, clemsongirl5392
Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:
Answers: 2
You know the right answer?
Consider the following intermediate chemical equations. 3 equations. 1: upper C solid plus upper o s...

Questions in other subjects:

Konu
Social Studies, 30.03.2020 04:40