Question

WILL FAN AND MEDAL
How many moles of aluminum are needed to react with 2.7 mol of FeO ? Reaction Equation: 2Al(s) + 3FeO(s) -- > 3Fe(s) +Al2O3(s)

no one will help me in chem :(

Answer 1

@jchick @Missiey ???

Answer 2

thank you!! @Missiey can you help me w another problem?

Answer 3

sure

Answer 4

um your answer isnt one of my choices

Answer 5

1.8 mol
• 2.1 mol
• 2.7 mol
• 5.4 mol

Answer 6

hold on let me redo

Answer 7

okay

Answer 8

sorry 1.8

Answer 9

ohhhh thank you!

Answer 10

How many grams of CO are needed to react with an excess of Fe2O3 to produce 225.5 g Fe? reaction equation: Fe2O3 (g) +3 CO (g) -- > 3 CO2(g) + 2 Fe(s)

i have to show my work but idk how to do it @Missiey

Answer 11

I am going to copy and paste from my class, this will show you how to work out the problem, then I want you to try and do it.

Answer 12

okay, thank you! @Missiey

Answer 13

How many molecules of oxygen gas are required to completely react with 85.0 grams of propane
(C3H8)?
C3H8 + 5 O2  3 CO2 + 4 H2O
85.0 g ? mcs
1.) 85.0 g C3H8 1 mole = 1.93 moles C3H8 C: 3 x 12.0 = 36.0
44.0 g H: 8 x 1.0 = 8.0 +
44.0
2.) 1.93 moles C3H8 = x moles O2 x = 9.65 moles O2
1 5
3.) 9.65 moles 6.022 x 1023 mcs = 5.81 x 1024 mcs O2
1 mole

Answer 14

this is from my class let me know if you need help, but try

Answer 15

im completely lost but lemme try

Answer 16

i have no idea like how to start @Missiey

Answer 17

Given an amount of a substance involved in a chemical reaction, we can figure out the amount of the other substances are needed or produced
• Always compare the number of MOLES
• 4 Fe + 3 O2  2 Fe2O3
• If I have 4 moles of Fe, I need 3 moles of O2 in order to produce 2 moles of Fe2O3.
• Comparison of coefficients = MOLE RATIO
• In the above eqn, what is the mole ratio between Fe2O3 and O2?
• Use coefficients… 2 : 3 or 2 to 3

Answer 18

okay but how do i relate that to find the number of grams of CO? @Missiey

Answer 19

@Missiey @xMissAlyCatx