Answer;
-Exothermic reaction;
-The sign of the energy change is negative (-)
Explanation;
2CuO(s) + C(s) --> 2Cu(s) + CO2(g)
ΔH = ΣΔHf(products) - ΣΔHf(reactants)
ΔH = -393.5kJ - 2(-155.2kJ) = -83.1 kJ
The reaction is exothermic.
-An exothermic process or reaction releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.
The answer is 62.5%
50:80*100 =
(50*100):80 =
5000:80 = 62.5
Fossil fuel plants require huge quantities of coal
Answer:
Hhere is the other part of the question ; What is the net electric field due to these rods at the origin? (epsilon not = 8.85*10^-12)
net electric field = 3600N/C
Explanation:
The detailed calculation is as shwon below
40kg
Explanation:
Given parameters:
Kinetic energy = 500J
Velocity = 5m/s
Unknown:
Mass of the object = ?
Solution:
Kinetic energy is the energy due to motion of a body. It is expressed as:
K.E =
mv²
m is the mass of the body
v is the velocity
To find the mass, make it the subject of the expression:
m =
}[/tex]
m =
}[/tex] = 40kg
Learn more:
Kinetic energy brainly.com/question/6536722
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