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oksian1 [2.3K]
3 years ago
6

How to find the number of protons in an element?​

Chemistry
2 answers:
bixtya [17]3 years ago
8 0

Answer:

To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number. number of neutrons = mass number - atomic number.

Explanation:

i hope it helps and have a great day

Arada [10]3 years ago
5 0

Answer:

Locate the element’s atomic number. The atomic number is located above the element symbol, in the upper left-hand corner of the square. The atomic number will tell you how many protons make up a single atom of an element.

Explanation:

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For a reaction 2A + B 2C, with the rate equation: Rate = k[A]2[B]
In-s [12.5K]
For reaction

2 A + B  ------------> 2 C  

Rate = K [ A ]² [ B ]

<span> the order with respect to A is 2 and the order overall is 3.
</span>
hope this helps! 


3 0
3 years ago
What is the answer slam sms
Musya8 [376]
The answer is C
wood isn't a conductor but metal is


4 0
3 years ago
Read 2 more answers
If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?
krok68 [10]

Answer:

\large\boxed{\large\boxed{0.64M}}

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

          \text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}

Substitute and solve for the molarity of the diluted solution:

           250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M

8 0
3 years ago
To which period does the Lanthanide series belong? Actinides?
borishaifa [10]
Lanthanide belongs to period 6, and actinides belongs to period 7
7 0
3 years ago
What is potential energy?
pantera1 [17]

Answer:

A. stored energy

Explanation:

potential energy is stored energy.

kinetic energy is the energy of motion

7 0
2 years ago
Read 2 more answers
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