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kirza4 [7]
3 years ago
14

What do we need to learn about inclined planes

Chemistry
1 answer:
Troyanec [42]3 years ago
4 0

Answer: Inclined plane, simple machine consisting of a sloping surface, used for raising heavy bodies. The force required to move an object up the incline is less than the weight being raised, discounting friction. The steeper the slope, or incline, the more nearly the required force approaches the actual weight.

Explanation:

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Which of the following is an intensive property of a sample of water
lakkis [162]
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What type of reaction is  Zn + 2HCl &gt; ZnCl2 + H2
Dmitry [639]
 this is the answer is 


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3 0
4 years ago
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Which of the following trends is indirectly proportional to effective nuclear charge, Zeff
Julli [10]

Answer : Option C) Atomic Size

Explanation : The atomic radius of the elements is found to be decreasing if we go from left to right in the modern periodic table. Accordingly, Z_{eff} increases as the number of shielding electrons present in the atomic nucleus of the periodic elements which lies in the same row remains constant while the number of protons in each atomic shell increases.

The effective nuclear charge Z_{eff} of an atom is defined as the net positive charge which is felt by the valence electron of the atomic element.

When Z_{eff} is observed to decrease, it is seen that the atomic radius grows in size. So, it explains the inverse relationship between both. This phenomenon occurs, because there is more screening of the electrons from the nucleus taking place, which is observed due to decrease the attraction between the electron and the nucleus.

7 0
3 years ago
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The heat of vaporization of water is 2,260 J. How much energy is released when 20 grams of steam is condensed at 100°C? *
gulaghasi [49]

Answer:

45200J

Explanation:

Given parameters:

Heat of vaporization of water  = 2260J/g

Mass of steam = 20g

Temperature = 100°C

Unknown:

Energy released during the condensation  = ?

Solution:

This change is a phase change and there is no change in temperature

To find the amount of heat released;

          H  = mL

m is the mass

L is the latent heat of vaporization

 Insert the parameters and solve;

          H  = 20g x 2260J/g

           H = 45200J

5 0
3 years ago
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