Answer:
Explanation:
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and
for the reaction comes out to be negative.
Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and
for the reaction comes out to be positive.
As the heat is absorbed the reactants , the reaction is endothermic and
for the given endothermic reaction will be +127 KJ
Answer:
P = 27.07 atm
Explanation:
Given that,
The number of moles, n = 22.5 mol
Volume, V = 30.5 L
Temperature, T = 447 K
We need to find the pressure of the gas. The ideal gas law is as follows :

R = 0.0821 L-atm/mol-K
Put all the values,

So, the pressure of the gas is 27.07 atm.
Answer:
Einstein proposed that electromagnetic radiation has a wave-particle nature, that the energy of a quantum, or photon, depends on the frequency of the radiation, and that the energy of the photon is given by the formula Ephoton=hv.
24
Explanation:
An atom is the smallest indivisible particle of any matter. Atoms are distinct and distinguishable from one another and are called elements:
CH₃(CH₂)₅0CH₃
There are 3 different kinds of atoms in the compound above called
elements
Carbon
Hydrogen
Oxygen
In the compound the subscripts gives the number of atoms:
C - 7
H - 16
0 - 1
Number of atoms in the compound is 24.
Learn more:
Number of atoms brainly.com/question/10419836
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