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White raven [17]
3 years ago
7

Check the statements that are a part of the Early Atomic Theory. Check all of the boxes that apply

Chemistry
1 answer:
MariettaO [177]3 years ago
5 0

Answer:

B&C

Explanation:

Atoms combine in whole number ratios to form compounds.

and

Atoms cannot be created or destroyed during a chemical reaction.

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How many grams of FeO would be needed to make 234.2 grams of Fe in the chemical reaction 4FeO = Fe3O4 + Fe? Show your work.
Scorpion4ik [409]

The grams  of FeO  that would  be needed to make 234.2 grams  of Fe  is

1204.42 grams


<u><em> calculation</em></u>

4 FeO → Fe₃O₄ +Fe

Step 1: find the  moles  of  fe

moles  =  mass /molar mass

from periodic table the  molar mass of Fe  = 56 g/mol

moles = 234.2 g/56 g/mol = 4.182  moles


Step 2: use  the mole ratio to determine the moles of  FeO

FeO: Fe  is 4:1 therefore the  moles of FeO  =4.182 moles  x4 =16.728  moles


Step 3:   find  the mass of FeO

mass = moles  x molar  mass

The molar mass of FeO = 56 +16 = 72 g /mol

mass  = 16.728 moles  x 72 g/mol= 1204.42 grams

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