A student touches a freshly baked cake that was taken out of the oven. Which best explains why the cake feels hot? Molecules in
2 answers:
Answer: Option (b) is the correct answer.
Explanation:
When the cake is baked then due to the heat provided to it there will occur movement of its molecules.
As a result, molecules will gain kinetic energy due to which there will occur collisions between them.
Also,
Hence, more is the heat provided to the cake more will be the kinetic energy of its molecules due to which when we touch it, it feels hot.
Thus, we can conclude that molecules in the cake are moving faster than molecules in the skin, best explains why the cake feels hot.
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We know that the equation for density is:
where D is the density, m is the mass in g, and V is the volume in either mL or cubic centimeters.
So then, given two of the variables, we can solve for density:
Therefore, the density of the bread is 0.6g per cubic centimeter.
Answer : The value of for the reaction is,
Explanation :
The given equilibrium reactions are:
(1)
(2)
As we know that, when we are multiplying the equation (1) by 2 then we get the equation (2). Thus, the relation between the two equilibrium constant will be,
So,
Therefore, the value of for the reaction is,