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denis-greek [22]
2 years ago
7

Chemical energy sources are often portable and provide large amounts of energy. Fossil fuels are one kind of chemical energy sou

rce. Most of the energy we use in the United States is generated by the combustion of fossil fuels. However, fossil fuel combustion adds greenhouse gases to the atmosphere, mostly CO2. One measure of the total amount of greenhouse gases that are emitted into the atmosphere each year is called a carbon footprint. Study these images to compare the carbon footprint of an average person in the United States to an average person around the world.
Knowing that greenhouse gases are contributing to climate change, how can we reduce our carbon footprint, particularly in the United States? Could hydrogen fuel replace fossil fuels in the future? Why or why not? Should the size of a person’s carbon footprint be limited by law? Why or why not?
Chemistry
1 answer:
konstantin123 [22]2 years ago
4 0

Answer:You can reduce our carbon footprints by using renewable energy,

Explanation:

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ASAP Which of these mixtures would best be separated through distillation?
sveta [45]

Answer:

Water and acetone is best by separated through distillation

The correct answer would be option C Acetone and water.

Explanation:

When in a mixture of fluid solution, two liquids are mixed in a form of mixture then these liquid can be separated only one method which is based on the fact. That two different liquids will have two different boiling temperatures which method of separating the Fluids is distillation.  

The different liquids that are  present in mixture are boiled and the vapours are condensed and the condensed portion is  accumulated in another beaker.

4 0
3 years ago
What is the mass of a sample of water that increases the temperature of the water from 10 ºc to 15 ºc and absorbs 1200 j of heat
Reika [66]
Q=mc(delta T)
m= Q/ c(delta T)
m= 1200 J / (4.19 J/kg C) (15-10)
m= 57. 28 kg
4 0
3 years ago
TRUE OR FALSE
Talja [164]

Answer:

True!

Explanation:

A spectrum is simply a chart or a graph that shows the intensity of light being emitted over a range of energies. Have you ever seen a spectrum before? Probably. Nature makes beautiful ones we call rainbows. Sunlight sent through raindrops is spread out to display its various colors (the different colors are just the way our eyes perceive radiation with slightly different energies).

Hope i helped!

4 0
2 years ago
PLEASE HELP I DONT UNDERSTAND A THING
Ymorist [56]

Answer:

I and III

Explanation:

6 0
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An empty graduated cylinder weighs 26.5 grams and when it is filled with an unknown liquid to the 45.8 ml mark the cylinder and
Softa [21]

Answer:

24.2 is the density of the liquid

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