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3 years ago

I don’t know if it’s that one or not

Chemistry

1 answer:

Sphinxa [80]3 years ago

3 0

Answer:

I think is the last one.

Anthracite – Stage Four

Anthracite, the fourth stage in coal formation, is also known as “hard coal” because it is hard and has a high lustre. It appears to have been formed as a result of combined pressure and high temperature. Anthracite burns with a short flame and little smoke.

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guajiro [1.7K]

Hope this helps

Answer: Families move away from shorelines.

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3 years ago

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gizmo_the_mogwai [7]

Answer:

Explanation:

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A car designer is designing a new model of a popular car. He wants to use the same engine as in the old model but improve the ne

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3 years ago

A student observes the chemical process described by this equation:

choli [55]

Answer:

Both are equal

Explanation:

Mass of starting material i.e Aluminium is $4.480 * 10^{-23}$ grams

The weight of oxygen is $2.65 * 10^{-23}$

There are 4 atoms of aluminium and 3 atoms of oxygen

Thus, the total mass of starting material is

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$35.1 * 10^{-23}$ grams

Mass of new substance is also equal to

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3 years ago

The Lithium atom has only two energy levels. The third is empty. Therefore, we can refer to the second energy level of the lithi

Minchanka [31]

Answer:

H=1

Li=1

Na=1

Be=2

Mg=2

B=3

Al=3

C=4

Si=4

N=5

P=5

O=6

S=6

F=7

Cl=7

Ne=8

Ar=8

He=8

Explanation:

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3 years ago