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Ugo [173]
3 years ago
11

Any kind of help would be nice :)

Chemistry
2 answers:
alina1380 [7]3 years ago
8 0

Answer:

1st page, number a-ENergy is added or absorbed

I cant see the answers on the 2nd page

Explanation:

Pepsi [2]3 years ago
3 0

Answer:

1. A gas is released.

2. Energy is absorbed.

3. Color change.

4. Energy is given off.

5. Change in odor.

Explanation:

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Please help me, Thank you!
babymother [125]

Answer:

amount of charge

Explanation:

Oxygen and sulfur are both in Group 16, which means they have a -2 charge. They have two more electrons than protons, making the charge of the ion negative.

Hope that helps.

4 0
3 years ago
Read 2 more answers
A sample of an unknown liquid has a volume of 24.0 mL and a mass of 6 g. What is its density? Show your work or explain how you
kobusy [5.1K]
The answer would be 0.25 g/mL. 
I determined the density by dividing the mass by the volume which gives you the density. D = mass/volume.
<span>6 g / 24 mL = 0.25 g/mL </span>
8 0
2 years ago
Read 2 more answers
What process is used to refine aluminum from its ore bauxite?
Murljashka [212]

Answer:

D. Smelting

Explanation:

Bauxite is the aluminum ore from which alumina, also known as aluminum oxide, Al₂O₃, is produced. Bauxite is extracted from the topsoil regions of some subtropical and tropical regions, and the Bayer process is primarily then used to produce alumina from the bauxite.

Aluminum is produced from the alumina by an aluminum smelting process known as the Hall—Heroult electrolytic process which involves the use of a carbon anode and direct current to produce aluminum by reducing the aluminum oxide

7 0
3 years ago
What is the Mass of a Penny
frez [133]
2.5 g is the mass of the penny for Canadian coins which have become defunct

3 0
3 years ago
Read 2 more answers
Determine the number of unpaired electrons in Ca?
serg [7]

When an electron occupies an orbital of an atom singly, rather than an electron pair such electron is said to be an unpaired electron. Each atomic orbital of an atom specified by quantum numbers can contain a maximum of two electrons having opposite spins, electron pair.

The numbers of unpaired electrons are determined by the electronic configuration of an atom. The electronic configuration of calcium, Ca is:

1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2} or [Ar]4s^{2}

Since, from the electronic configuration it is clear that the number of electrons in valence orbital that is 4s is 2 that means the electrons are paired up in the valence orbital so, there are no unpaired electrons present in Ca.

Hence, the number of unpaired electrons in Ca is 0.

3 0
3 years ago
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