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3 years ago

using a cutting board to cut raw chicken and then using the same cutting board to cut fresh fruit with only a rinse is between

Chemistry

1 answer:

Rus_ich [418]3 years ago

6 0

Answer:

its is wrong to do that

Explanation:

the smell of the meat will mix with that of the fruits

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3 years ago

If 43.7 g of iron is completely used to produce 62.5 g of iron (III) oxide, how many grams of oxygen are involved in the reactio

Kobotan [32]

Mass of Oxygen : 18.8 g

<h3>Further explanation</h3>

Reaction(balanced) :

4Fe + 3O₂ → 2Fe₂O₃

mass Fe = 43.7 g

mol Fe(MW= 55,845 g/mol) :

$\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{43.7}{55.845}\\\\mol=0.783$

mol O₂ : mol Fe = 3 : 4, so mol O₂ :

$\tt \dfrac{3}{4}\times 0.783=0.5873$

Mass O₂(MW=32 g/mol) :

$\tt mass=mol\times MW\\\\mass=0.5873\times 32\\\\mass=18.7936~g\approx 18.8$

Or simply you can Conservation of mass, where the masses before and after the reaction are the same

mass reactants=mass products

mass iron+mass oxygen=mass iron (III) oxide

43.7 g + mass oxygen=62.5 g

mass oxygen = 62.5 - 43.7 = 18.8 g

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3 years ago

using a cutting board to cut raw chicken and then using the same cutting board to cut fresh fruit with only a rinse is between​

using a cutting board to cut raw chicken and then using the same cutting board to cut fresh fruit with only a rinse is between