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Phantasy [73]
3 years ago
9

Hi, we are looking for a list of moderate- highly endothermic equilibrium reactions which preferably only involve one particular

state of all products and reactants involved. We have asked teachers and looked on the internet, but there is not much information. Due to this happening in a school, we also need the chemicals used to be suitable to use in a school lab. Any suggestions would be highly appreciated.
Chemistry
1 answer:
kobusy [5.1K]3 years ago
4 0

Answer:

The products have more energy than the reactants.

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Propane (c3h8) is burned in oxygen to produce carbon dioxide and water. the heat of combustion of propane is -2012 kj/mole. how
Olegator [25]
C_{3} H_{8} + 5 O_{2} ---\ \textgreater \  3CO_{2}  +4H_{2}O    (-2012 \frac{kJ}{mol} )


3 mol                10 mol


C_{3}H_{8} is /excess /reactant

because 3 mol propane require 15 mol oxygen (by reaction)

5 mol oxygen ---1 mol propane, so

10 mol oxygen ---2 mol propane

Only 2 mole propane will be burned,

so 

2012 ( kJ/mol)*2 mol =4024 KJ heat will be given off

Correct answer is number 4.



5 0
2 years ago
By what process do electromagnetic waves release from the materials they contact?
Rudik [331]

Answer:

The photoelectric effect

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5 0
3 years ago
Which of the following is true?
kotykmax [81]
Anwser is C for cesium
6 0
3 years ago
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Volume occupied 3.52x10^32 moluchles<br>of Mathane (CH4)<br>1) At STP​
Naddika [18.5K]

Answer:

volume = 13097674418.528dm³

Explanation:

n = (3.52)*10^32/(6.02)*10^23)

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6 0
2 years ago
Increasing temperature can:
umka21 [38]

The answer would be A. You cannot decrease mass because of increasing temp so it can't be C and adding neutrons or protons would be changing the atom and therefore the element, and that is not possible through just an increase of temperature, so it can't be B or D. Hope this was helpful! ;)

3 0
3 years ago
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