<span>In a mechanical clock, the swinging of a pendulum causes the hands to move. The point of the pendulum in its swing have the least gravitational potential energy is at its original position.</span>
The reaction is
2H₂(g) + O₂(g) ---> 2H₂O
Thus as per balanced equation two moles of hydrogen will react with one moles of oxygen.
There is a directly relation between moles and volume. [One mole of each gas occupies 22.4 L of volume at STP]
Thus we can say that two unit volume of hydrogen will react with one unit volume of oxygen
Now as we have started with equal units of volume of both oxygen and hydrogen, half of oxygen will be consumed against complete volume of hydrogen
so the gas which will remain in excess is oxygen
Answer:
A hydrometer is a special device used to determine the density of liquids.
Explanation:
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Answer:
Helium has 2 electrons
Explanation:
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