Answer:

Explanation:
Hello,
In this case, given the balanced reaction:

We can see a 2:4 mole ration between permanganate ion (118.9 g/mol) and manganese (IV) oxide (86.9 g/mol), that is why the resulting mas of this last one turns out:

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It is A lubricant that reduces frictions creation
Answer:
Do not try to re-light or handle malfunctioning fireworks. Soak both spent and unused fireworks in water for a few hours before discarding.
Answer:
i think it will be warm air rises and takes heat with it eventually it cools and sinks
Explanation:
please mark me as brainliest if it helps