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sertanlavr [38]
3 years ago
14

If a chemical reaction such as the formation of iron oxide contains 4 atoms of iron (fe) in the product how many atoms of iron (

fe) would be in the reactants ?
Chemistry
2 answers:
Dmitry [639]3 years ago
5 0

Answer:

your in k12 science the eog #4

Explanation:

inessss [21]3 years ago
4 0
4. Number of atoms are conserved in chemical reactions
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Answer:

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Explanation:

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How many liters of carbon dioxide can be produced if 37.8 grams of carbon disulfide react with excess oxygen gas at 28.85 degree
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A student mixes a solution containing 10.0 g bacl2 (m = 208.2) with a solution containing 10.0 g na2so4 (m = 142.1) and obtains
professor190 [17]
The balanced equation for the above reaction is as follows;
Na₂SO₄ + BaCl₂ --> BaSO₄ + 2NaCl
Na₂SO₄ reacts with BaCl₂ in the molar ratio 1:1
Number of Na₂SO₄ moles - 10.0 g / 142.1 g/mol = 0.0704 mol
Number of BaCl₂ moles - 10.0 g / 208.2 g/mol = 0.0480 mol
this means that 0.0480 mol of each reactant is used up, BaCl₂ is the limiting reactant and Na₂SO₄ has been provided in excess. 
stoichiometry of BaCl₂ to BaSO₄ is 1:1
number of BaSO₄ moles formed - 0.0480 mol
Mass of BaSO₄ - 0.0480 mol x 233.2 g/mol = 11.2 g
theoretical yield is 11.2 g but the actual yield is 12.0 g
the actual product maybe more than the theoretical yield of the product as the measured mass of the actual yield might contain impurities. 
percent yield - 12.0 g/ 11.2 g x 100% = 107% 
this is due to impurities present in the product or product could be wet.
4 0
3 years ago
Find the area shaded in yellow.<br> [ ? ] square units
slega [8]

Answer:

A(yellow) = 52

Explanation:

A(yellow) = A(total) - A(red)

= 11×6 - 7×2

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Well, Cellular Respiration does a lot for your body in many ways! It breaks down the sugars, fats, and proteins and gives your body the energy (ATP) it needs from that. 
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3 years ago
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