Answer:
Explanation:
To convert from moles to grams, we must use <u>molar mass.</u>
This can be found on the Periodic Table, so look for the symbol for aluminum: Al
We can use this number as a ratio.
Multiply by the given number of moles: 5.12
Multiply. The moles of aluminum will cancel.
Round. The original measurement of moles has 3 significant figures, so our answer must also have 3 sig figs.
For the number we calculated, that is the ones place. The 1 in the tenth place tells us to leave the 8.
There is about <u>138 grams of aluminum</u> in 5.12 moles.