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lubasha [3.4K]
3 years ago
8

The smallest unit of an element that can exist either alone or in combination with other such particles of the same or different

elements is the
А.
electron
B
proton
neutron
D
atom
Chemistry
1 answer:
Mekhanik [1.2K]3 years ago
5 0

Answer

im not quite sure but I think the answer is <em>D atom</em><em> </em>

Explaination

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What is the basis for exceptions to the aufbau principle
sweet-ann [11.9K]
With every electron stationed in its own orbital or paired off with each other in the higher energy level, the energy level is balanced and stable. The atoms that utilize this exception are Molybdenum, Chromium, Gold, Silver, and Copper.
3 0
3 years ago
Read 2 more answers
Calculate the heat change involved when 2.00 L of water is heated from 20.0/C to 99.7/C in
IgorC [24]

Answer:

669.48 kJ

Explanation:

According to the question, we are required to determine the heat change involved.

We know that, heat change is given by the formula;

Heat change = Mass × change in temperature × Specific heat

In this case;

Change in temperature = Final temp - initial temp

                                       = 99.7°C - 20°C

                                       = 79.7° C

Mass of water is 2000 g ( 2000 mL × 1 g/mL)

Specific heat of water is 4.2 J/g°C

Therefore;

Heat change = 2000 g × 79.7 °C × 4.2 J/g°C

                      = 669,480 joules

But, 1 kJ = 1000 J

Therefore, heat change is 669.48 kJ

7 0
3 years ago
Hi May I know what is the answer and how to get it
Trava [24]

Answer:

D

Explanation:

When lead ions and sulfate ions bond, they form sediment so neither a nor b can be the answer.

The important thing is that two nitrate ions were originally bonded with one lead ion, while two potassium ions bonded with a sulfate ion.

Finally, since potassium and nitrate ions don't form sediment these two ions must remain. Therefore the answer is D

8 0
2 years ago
What are the examples of physical chemistry?
OverLord2011 [107]

ANSWER:

Physical chemistry is the branch of chemistry that deals with the physical structure of chemical compounds, the way they react with other matter and the bonds that hold their atoms together. An example of physical chemistry is nitric acid eating through wood.

3 0
2 years ago
Plz help me guys<br><br> A<br><br> B<br><br> C<br><br> D
Taya2010 [7]

Answer:

C

Explanation:

I think

3 0
3 years ago
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