Answer:
(a).molar mass=(12×9)+(1×8)+(16×4)
=180.0g
(b).moles of Aspirin
moles=mass(g)÷molar mass
=360.4÷180.0
=2.002moles
(c). molecules of Aspirin
To get molecules just multiply moles of Aspirin by Avocado number.
=2.002×6.022×10^23
=1.206×10^24 molecules
(d) number of carbon atoms
=12×9
=108 carbon
<span>Fe + O2 ----> Fe2O3
</span>4Fe + 3O2 ----> 2Fe2O3
Left Hand Side;
Fe=4
O2=6
Right Hand Side:
Fe=4
O2=6
I’m just letting you know this is really easy you just calculate the molar mass of each compound and divide the amount of the compound (grams) by the molecular Mass
The answer is A because it has the most amount of speed, the plane has the same speed but doesn't tell you for what amount of time is the speed so what if the plane traveled 15 per 2 hours or 3 obviously the truck is going faster and it if said 15 miles per minute then it would obviously be the plane but since it doesn't specify then the truck would be you rmost likely answer
Hope this helps
The balanced equation is
2Al + 2KOH + 6H2O -----> 2K[Al(OH)4 + 3H2.
From the above we see that 2 moles of K react with 2 moles of Al.
So 2 .94 moles of aluminium will react with 2.94 moles of potassium (answer)
