Someone. or something will get hurt
Answer:
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Explanation:
The more reactive element replaces less reactive element during chemical reaction.
Since, potassium is more reactive than beryllium. When potassium reacts with beryllium choride, it replaces beryllium and forms potassium chloride and produces beryllium.
Answer:
The gas obeys Boyle’s law and the value of
both are equal to 40.0 atm L.
Explanation:
Initial volume of the gas = 
Initial pressure of the gas = 
Final volume of the gas = 
Final pressure of the gas = 
This law states that pressure is inversely proportional to the volume of the gas at constant temperature.

The equation given by this law is:








The gas in the cylinder is obeying Boyle's law.
The gas obeys Boyle’s law and the value of
both are equal to 40.0 atm L.
The answer is c)11 because copper has 11 valence electrons