Answer:
After every 6 months opened containers of peroxide formers will be tested.
Explanation:
Opened containers from which peroxide formation take place will be tested after every 6 months for safe storage. And for unopened container the test will be conducted for peroxide formation is after 12 months from manufacturing expiry date or from receiving date.
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Calcium would be more reactive because it is closer to francium on the periodic table, francium is the MOST reactive element.
Answer:

Explanation:
I am assuming you are saying what is the final volume of the gas
Known :
Initial volume (V1) = V
Initial temperature (T1) = T
Final temperature (T2) = 5/4 T
Initial pressure (P1) = P
Final pressure (P2) = 2P
<u>Wanted: Final volume (V2)</u>
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