Molar mass Na2CO3 = 106 g/mole
Using dimensional analysis:
0.787 moles Na2CO3 x 106 g/mole Na2CO3 = g Na2CO3
Answer = 83.4 g Na2CO3
One Hundred and twenty-five
Law of superposition
Principle of cross-cutting
Explanation:
The geologic precepts that would be used to determine the relative ages of the rock strata are the law of superposition of strata and the principle of cross-cutting.
- The law of superposition of strata states that "in an undisturbed sequence of rock strata, the oldest layer is usually at the bottom and the youngest on top".
- From this law we understand that the oldest layer will be at the bottom if the rock has not been disturbed.
- Here the rock has been disturbed by folding and we need to unravel to fold and see how the rock sequence originally was laid.
The principle of cross-cutting states that "faults are younger than the rocks they cut through". Structures in rocks are younger than rock layers they cut through.
A fault or joint will only pass through a rock that has been formed before it occurred. Subsequent rocks will be younger than the fault.
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Most biomolecules are organic compounds, and just four elements—oxygen, carbon, hydrogen, and nitrogen—make up 96% of the human body's mass.
The substance that is dissolved in water is called a solute.
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