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torisob [31]
3 years ago
12

How is coal usually used​

Chemistry
1 answer:
Daniel [21]3 years ago
4 0

Answer:

Coal is primarily used as fuel to generate electric power in the United States.

Explanation:

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Which group of factors are most important in determining the composition of ocean water? a.)temperature, salinity, and density b
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Temperature, salinity, and density are the group of factors are most important in determining the composition of ocean water.

a.)temperature, salinity, and density

<u>Explanation:</u>

The three fundamental factors that help in determining the composition of ocean water are temperature, salinity, and density. Temperature, saltiness, salinity, and density influence the thickness of seawater.

Enormous water masses of various densities are significant in the layering of the sea water (increasingly thick water sinks). As temperature builds water turns out to be less thick. As saltiness builds water gets denser. The temperature helps in deciding the pace of vanishing of the ocean.

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3 years ago
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Which of the following combination of elements would result in covalent compound? * W X Y Z Vand X Wand Z Y and Z Wand y​
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C. Y & Z

Explanation:

V, W are imaginary metals here because their valence electrons are typically less than 4. X, Y, Z are non-metals and have higher valence electrons. Here, if V or W bind with X, Y, or Z we make ionic bond (because metal + non metal = ionic). But, if X binds with Y or Z or any combinations of any two of the three non-metals results in covalent bond (non metal + non metal = covalent).

Thus, Y and Z make covalent.

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Answer:

B

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Heating a piece of iron until it glows.

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The difference in elevation between the highest and lowest contour lines on a topographical map is called:
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