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Evgen [1.6K]
3 years ago
11

Given three (3.00) moles of gold (Au), how many grams do you have?

Chemistry
1 answer:
stellarik [79]3 years ago
6 0
One mol of any element is the elements atomic mass. So you would look on the periodic table to find the atomic mass of gold. Which is 197g. Knowing that that is one mol of gold you would multiply 197 by three to get three mols of gold. Which is 591g. So the answer is c. I hope this helps!!
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In this case, since HBr is an acid and Mg(OH)2 is a base, an acid-base reaction is undergone, by which a salt and water are produced as neutralization products:

HBr+Mg(OH)_2\rightarrow MgBr_2+H_2O

However, it need to be balanced since two bromine atoms are produced, therefore we write:

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Thus, the products are magnesium bromide, MgBr2, and water, H2O.

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