Answer:
2667 tires are needed to meet the demand of ten homes for one year.
Explanation:
According to the Second Law of Thermodynamics, only a part of generated energy when tires are burned can be utilized due to irreversibilities associated with finite temperature differences. The energy from a tire that can be transformed into electricity (), measured in kilowatt-hours, is estimated by definition of efficiency:
Where:
- Efficiency, dimensionless.
- Energy liberated by burning, measured in kilowatt-hours.
Given that and , the amount of energy per year generated by a tire is:
Now, the amount of tires needed to meet the demand of then homes for one year is:
2667 tires are needed to meet the demand of ten homes for one year.
I think 310.2 g/mol
hope this helps
Density is an intensive property of a substance. An intensive property means that it is a physical property that does not depend on the size or the amount of material in the matter. For example, if a diamond is cut in half, the density does NOT change, therefore it is an intensive property.
Answer:
2Na + F2 → 2NaF
Explanation:
A balanced equation is an equation in which the number of the individual atoms on the left side is the same with that on the right side of the equation. This is true as explained by the law of conservation of matter.
From the options above only the equation given below is balanced :
2Na + F2 → 2NaF
There are 2 atoms of Na both on the left and on the right. There are also 2 atoms of F both on the left and right side
Answer: If the gold in the crown was mixed with a less-valuable metal such as bronze of copper then this affects its density by making it to weigh even more and if it weighs more then it has less of chance to float. Observe: Drag each of the crowns into the liquid.
Explanation: