Answer:
See explanation for details
Explanation:
6) C is false. What is going on there is actually a transformation of mechanical energy to the chemical energy stored in carbon dioxide in the atmosphere. The burning of the fossil fuel produces mechanical energy which is stored in the chemical bonds of CO2 hence the statement is false
7) A is true. Solar energy refers to energy from the sun, this energy is trapped from Tue sun and stored in chemical bonds in glucose, and starch molecules during photosynthesis.
8) C represents the release of carbon dioxide by the burning of fossil fuels.
9) B,C,D, E
B refers to photosynthesis in which plants take in atmospheric carbon dioxide
C refers to the burning of fossil rules which releases atmospheric carbon dioxide
D refers to the dissolution of atmospheric carbon dioxide in water bodies to form carbonates in water.
E refers refers the return of organic carbon to the soil by dead organisms
10) A and C
A shows the conversion of solar energy to chemical energy
C shows the conversion of mechanical energy to chemical energy
Answer:
Explanation:
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In this case, according to the given chemical reaction, it is possible for us to realize that the 46.2 kJ of energy are given per mole of reaction, which are related to 3 moles of hydrogen; Thus, we can calculate the energy per mole of hydrogen as shown below:
Now, to calculate the total energy, we convert the grams to moles of hydrogen as shown below:
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Answer:
0.38
Explanation:
As you go from 0 % hexane (χ = 0) to 100 % hexane (χ = 1), the refractive index decreases from 1.407 to 1.375, a decrease of 0.032.
From 1.407 to 1.3948, the decrease is 0.0122
.
That is 0.0122/0.032 = 0.38 of the distance from χ = 0 to χ = 1.
The mole fraction of hexane is 0.38.
The diagram below is a plot of refractive index vs. the mole fraction of hexane. It shows that the refractive index drops to 1.3948 when χ = 0.38.
All atoms are made up of different amounts of atoms. Ex: some may have two some may have 3
Hydrosphere because it is water and water is where the dolphins swim.
