Answer:

Explanation:
To convert from moles to grams we must use the molar mass, which can be found on the Periodic Table.
- Aluminum (Al): 26.981538 g/mol
Use this number as a fraction.

Multiply by the given number of moles.

The moles of aluminum will cancel.



The original number of moles, 0.500, has 3 significant figures, so our answer must have the same.
For the number we calculated, that is the tenth place. The 9 in the hundredth place tells us to round the 4 to a 5.

There are about <u>13.5 grams of aluminum</u> in 0.500 moles.
Answer:
It weighs about 0.819 kg.
Answer: The Answers are: 0.31g & 0.011mol & 3.34g & 0.016mol.
Explanation: Solved in the attached picture.
The number at the bottom of each element on the periodic table represents the weight and or atomic weight.