chelsie2000harp9tg8e chelsie2000harp9tg8e
  • 04-06-2018
  • Chemistry
contestada

Please Help!!

how much heat will be released when 10.0g of hydrogen peroxide decomposes according to the following reaction:
2H2O2(l)--> 2H20(l)+ O2(g) H= -190 KJ

Respuesta :

thankins2017p7070c
thankins2017p7070c thankins2017p7070c
  • 05-06-2018
Enthalpy of decomposition is measured in kilojoules per mole, so we need to know how much material we’re working with.

Ten grams of hydrogen peroxide is 0.294 moles (formula weight: 34.014 grams per mole), so we can run the reaction 0.147 times (0.294 moles divided by the two moles per run requirement). This means the reaction has a heat loss equivalent to:

0.147 x -190 kJ

or -27.93 kJ through the reaction.
Answer Link

Otras preguntas

what are two ways to organize sentences
In recent years, republicans who have failed to toe the party line
Shaw expressed his motivation for writing plays as _____.
It's a good idea to remove meat and fish from the grill before it has finished cooking because A. the fish will fall apart if it's fully cooked on the grill
Is the relation a function? Why or why not? {(–8, –4), (–2, 0), (1, 3), (–2, 6)} No; the relation passes the vertical line test. Yes; only one range value ex
What was the landmark supreme court decision holding that black men could not be citizens under the constitution of the united states?
What is the domain of y= √x-5-1
Which best describes county governments? a. They are overseen by a mayor and department chairs. b. They are established as outlined by the US Constitution. c. T
What type of video games do you prefer buying?
What percent of $200 is $40?