Answer:

Explanation:
Hello!
In this case, given the masses of copper, zinc and lead, it is possible to compute the moles via their atomic masses first:

Now, we compute the atomic percentages as shown below:

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Answer:
Prevent any European country from growing much stronger than its neighbors.
Explanation:
Presumptive tests, also known as preliminary tests or field tests, allow drugs to be quickly classified into a particular chemical group, but do not unequivocally identify the presence of a specific chemical compound.
Answer: increase
Explanation: as pressure is increased, equlilibrium shifts towards the side with less moles of gas.
Yes, Titan is bigger than Mercury. So basically, it's true.