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iVinArrow [24]
2 years ago
14

Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer.

Chemistry
2 answers:
liberstina [14]2 years ago
8 0

Answer:

A

Explanation:

I would say A because the sun makes energy right so if you are looking for an arrow or arrows I would say A I hope this helps!! and have a great day or night

Vlada [557]2 years ago
3 0

Answer:

A and E

Explanation:

the other guy was correct but E also demonstrate a conservation of mass and energy.

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The modern periodic table is arranged in order of increasing. true or false
qaws [65]

Answer:

Increasing atomic number - True

Explanation:

The modern table is based on Mendeleev’s table, except the modern table arranges the elements by increasing atomic number instead of atomic mass.

The Atomic number is the number of protons in an atom, and this number is unique for each element. For example, Hydrogen has an atomic number of 1, Calcium has an atomic number of 20.

In the modern periodic table the elements are further arranged into:

- rows, called periods, in order of increasing atomic number. Elements in the same periods have the same number of shells.

- vertical columns, called groups, where the elements have similar properties. Elements in the same group has the same number of valency (outermost number of electrons)

4 0
3 years ago
The "d" subshell can hold a maximum of ________ electrons.
Verizon [17]
The d subshell has 5 orbitals (with each being able to hold two electrons.  As such, the d orbital can hold a maximum of 10 electrons.

<span>The "d" subshell can hold a maximum of _TEN_ electrons.</span>
5 0
3 years ago
How many inches are in 2.0 miles
erastovalidia [21]
126,720 inches are in 2.0 miles
3 0
3 years ago
Explain what keeps the electrons confined in the space surrounding the nucleus
vitfil [10]

Answer:

Electrons are trapped inside the atom because of the attraction forces with positively charged protons that are found in the nucleus.

8 0
2 years ago
Is the answer A, B, C, or D?
Sunny_sXe [5.5K]

Answer:

C

Explanation:

C because there is more in it than the rest of the idems

4 0
3 years ago
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