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ira [324]
4 years ago
14

The first elements discovered by scientists 2000 years ago became known as the original 11 Greek / Latin elements

Chemistry
1 answer:
Alenkinab [10]4 years ago
6 0

Answer:

True

Explanation:

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A Mg2+ ion would have 10 electrons because it lost 2 to meet the octet rule when it reacted.
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HELP ASAP!!!!<br><br> How does mass affect force?
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When a net force is applied, the object accelerates. Newton's second law details the relationship between net force, the mass, and the acceleration: The acceleration of an object is in the direction of the net force. If you push or pull an object in a particular direction, it accelerates in that direction.
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How do we name chemicals
Vesnalui [34]
The answer is:

You take the second element and you add "ide".

I hope this helps! 

3 0
3 years ago
The results from the alpha particle scattering experiment led to the nuclear model.
yanalaym [24]

Answer:

21000000 m/s

Explanation:

Data obtained from the question:

Speed of light = 300000000 m/s

Speed of Alpha Particle =.. ?

From the question given above, the speed of the alpha particle is 7% of speed of light. Since we know the value for the speed of light, therefore, we can obtain the value for the speed of the alpha particle as follow:

Speed of Alpha Particle = 7% x speed of light

Speed of Alpha Particle = 7/100 x 300000000

Speed of Alpha Particle = 21000000 m/s

6 0
3 years ago
8. In the lab, you are asked to prepare 150 mL of an 85 g/L solution and then use the original
finlep [7]

For the original solution,

Concentration = 85g/L = 85g/1000ml

Required Volume = 150ml

(a)

Concentration = Mass/Volume

⇒ 85g/1000ml = Mass of the solute/150ml

⇒ Mass of the solute = 85 x 150/1000

⇒ Mass of the solute = 12.75 grams

Hence, 12.75 grams of the solute is required to prepare the original solution.

(b)

Now,

Concentration of the original solution = 85g/L = M1

Required concentration = 50g/L = M2

Final Volume = 500 ml = V2

Required Volume from the original solution = V1 =?

As we know,

M1V1 = M2V2

Hence,

85g/L x V1 = 500 ml x 50g/L

⇒ V1 = 500 X 50 / 85

⇒ V1 = 294.11 ml

Therefore, 294.11 ml of the original solution is required to make the diluted solution.

<h3>What is a Stock solution?</h3>
  • A stock solution is a very potent mixture. These solutions are quite helpful since we may take a small amount of the stock solution and dilute it to the required concentration.
  • These ready-to-use chemical reagents can be prepared quickly thanks to these stock solutions. It also aids in material conservation.
  • As a result, just the amount of stock and solvent required for the dilution process is consumed when utilizing a stock solution to low-concentrated solution.
  • Because we simply need to dilute the stock solution instead of preparing the solution using many reagents and complex procedures, it is also crucial to conserve storage space.
  • Additionally, it enhances experiment accuracy.
  • A chemical reagent is present in vast quantities as a stock solution. It has a uniform concentration.
  • Examples of typical stock solutions in laboratories are sodium hydroxide and hydrochloric acid. These play a critical role in creating titration-related solution preparations.

To learn more about the Stock solution, refer to:

brainly.com/question/28083950

#SPJ13

6 0
2 years ago
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