adityamahesh2002

14.11.2019 • 

Chemistry

Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy change represented by x?

3c + 3o2 yields 3co2 deltah = -1182 kj

4h2 + 2o2 yields 4h2o deltah =-1144 kj

c3h8 + 5o2 yields 3co2 + 4h2o deltah = x

3h8 3c + 4h2 h = 104 kj

a. 104 = (-1182) - [x + (-1144)]

b.104 = x - [(-1182) + (-1144)]

c.104 = (-1182) + (-1144) + x

d.104 = x + (-1182) - (-1144)

Ответ:

hei40563273

09.01.2022

Chemistry

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In order to solve this, we need to make use of Hess' Law.

We are already given the equations and their corresponding deltaH. Using Hess' Law, we can generate this equation:
104 kJ = x - (-1182 kJ) - (-1144 kJ)

Among the choices, the answer is
B.104 = x - [(-1182) + (-1144)] 

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Ответ:

arturocarmena10

09.02.2020

Chemistry

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glucose

Explanation:

the main outputs are oxygen and glucose sugars

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