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serious [3.7K]
3 years ago
10

Please Help!!

Chemistry
2 answers:
Dmitry [639]3 years ago
8 0

Answer:

weak

Explanation:

Leokris [45]3 years ago
6 0

Answer: The covalent bonds within a molecule are very (strong). However it requires (less) energy to melt a molecular compound than an ionic compound.

This is because the attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.

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Calculate the number of moles of carbon dioxide formed when 40.0 moles of oxygen is consumed in the burning of propane. Note the
joja [24]
The first step is to balance the equation:


<span>C3H8 + 5O2 ---> 3CO2 + 4H2O


Check the balance


element          left side        right side

C                    3                  3  
H                    8                  4*2 = 8
O                    5*2=10        3*2 + 4 = 10


Then you have the molar ratios:


3 mol C3H8 : 5 mol O2 : 3 mol CO2 : 4 mol H2O


Now you have 40 moles of O2 so you make the proportion:

40.0 mol O2 * [3 mol CO2 / 5 mol O2] = 24.0 mol CO2.


Answer: option D. 24.0 mol CO2
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3 years ago
You leave a piece of bread outside for a few days. It forms green and blue mold. It smells awful. A chemical change has occurred
Fed [463]

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3 0
3 years ago
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What do we know about elements with half-filled energy levels??
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6 0
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Please help! (20POINTS)
rewona [7]

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ser-zykov [4K]

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6 0
2 years ago
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