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Wittaler [7]
3 years ago
8

2. Which electron dot structure represents a nonpolar molecule?

Chemistry
1 answer:
TEA [102]3 years ago
5 0

Answer:

it's d. H:C:C:F

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The water is warmer near the equator because the equator is closer to the sun. The suns rays will hit the water at a closer distance.

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10. Is the identity of an element determined by its mass number or atomic number?<br> By omak
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atomic number

Explanation:

mass is determined by the protons and neutrons

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Which of these actions is the BEST evidence that waves can cause objects to move?
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3 years ago
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Helppppppp I have a brain fart ....
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3 years ago
For the reaction ? Fe+? H2o ⇀↽? Fe3o4+? H2 , a maximum of how many grams of fe3o4 could be formed from 354 g of fe and 839 g of
Evgesh-ka [11]

The given reaction is:

3Fe + 4H2O → Fe3O4 + 4H2

Given:

Mass of Fe = 354 g

Mass of H2O = 839 g

Calculation:

Step 1 : Find the limiting reagent

Molar mass of Fe = 56 g/mol

Molar mass of H2O = 18 g/mol

# moles of Fe = mass of Fe/molar mass Fe  = 354/56 = 6.321 moles

# moles of H2O = mass of h2O/molar mass of H2O = 839/18 = 46.611 moles

Since moles of Fe is less than H2O;  Fe is the limiting reagent.

Step 2: Calculate moles of Fe3O4 formed

As per reaction stoichiometry:

3 moles of Fe form 1 mole of Fe3O4

Therefore, 6.321 moles of Fe = 6.321 * 1/ 3 = 2.107 moles of Fe3O4

Step 4: calculate the mass of Fe3O4 formed

Molar mass of Fe3O4 = 232 g/mol

# moles = 2.107 moles

Mass of Fe3O4 = moles * molar mass

= 2.107 moles * 232 g/mol = 488.8 g (489 g approx)

 


7 0
3 years ago
Read 2 more answers
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