Energy can be conserved by efficient energy use.
Answer: Option A
<u>Explanation:</u>
Energy can be transferred from one form to another, but it cannot be destroyed or created. So it can be conserved if efficiently used. Thus efficient usage of energy lead to conservation of energy. Due to conservation of energy, the forces can be renewable and non-renewable.
So, we should know how the input energy can be completely converted to another form of energy leading to efficient usage of energy without any loss. As if there is no loss, input energy will be equal to output energy leading to 100% efficiency.
valance refers to the total number of electrons that exist in the orbitals that occupy the outermost energy level of an atom. you pretty much got it!
Answer:
Oxygen is an element.
Explanation:
Out of the choices listed, oxygen is the only element. The other choices are incorrect because air is a mixture of nitrogen, oxygen, carbon dioxide, water vapors, and some other gases; water is a compound of hydrogen and oxygen; and sodium chloride is a compound of sodium and chloride ions; meanwhile, oxygen is a pure element.
Adding decimals has steps to follow not like the whole number when adding, you can add it straight.
Given:
3.089 g and 0.074 52 g
The first step arranged the numbers and second lined up the decimal points when writing down and then simply add the numbers that lined up in the decimals points.
3.089
+ 0.07452
3 .16352
so, you can easily get the answer 3.16352 g.
50 Miles per hour, 0.83 miles per minute