Questions:
1. How many Oxygen atoms are in 1.5 moles of CO2?
• You have already calculated the number of Co2molecules

2.How many Oxygen atoms are in 45g of water?
• You have already calculated the number of H20 molecules

3. In 141g of Al2O3:
(moles of Al2O3 already calculated in qu 2)
• How many ions are there altogether?
• How many positive ions are there?
• How many negative ions are there?

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

yes

ya te ayud espera

it's c (engineer's do their work with mechanical stuff not on any living being)