Endothermic reactions absorb energy from the environment and make it cooler, such as photosynthesis in plants, while exothermic reactions release energy into the environment and make it hotter, like burning wood in a fireplace.
Endothermic and exothermic reactions are different in terms of energy absorption and release. In an endothermic reaction, energy in the form of heat is absorbed from the surroundings into the system (reaction). This causes the environment to become cooler. An example would be the process of photosynthesis in plants.
In contrast, an exothermic reaction releases energy into the surroundings. As a result, the environment around an exothermic reaction heats up. An example of an exothermic reaction is combustion, such as the burning of wood in a fireplace.
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B)Ar
C)Cl
D)Si
A is obiviously the answer here.
B. 2.21 x 10-18 j
C. 7.36 x 10-27
D. 1.988 x 10-49 J
Answer:
B
Explanation:
From the given formukar for energy of a photon, we can obtain the energy of the photon as shown in the image. The meaning of the parameters in the equation are also shown in the image.
Answer: 2.21 x 10^-18 j
Explanation: a pex
B organs
C organ systems
D organisms
Answer:
B Organs
Explanation:
Cells come together to form tissue Tissue comes together to for Organs Organs come together to form Organ Systems Organs Systems come together to form Organisms
Answer : The new volume of the air is, 6.83 L
Explanation :
Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
Putting values in above equation, we get:
Therefore, the new volume of the air is, 6.83 L
B. Radioactive Isotopes last for less time
C. Radioactive isotopes last longer.
D. There is no difference
Radioactive isotopes last for less time, is the one among the following choices given in the question that shows the way a radioactive isotope and a stable isotope differs