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mixer [17]
3 years ago
15

Choose all that apply. Nitrogen has an atomic number of 7. Its atomic mass is 14. Nitrogen has

Chemistry
1 answer:
Goshia [24]3 years ago
6 0
The  atomic  number  of  calculated as  number  of  protons  +  number  of  neutrons. The  number  of  protons  are  the  same  as  atomic  number.  This  implies  that  Nitrogen  has  seven  protons.  To  get  the  the  number  of  neutron  we minus  atomic  mass  from  number  of  protons
     that  is  14-7=7  neutrons
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Plz help quick
vovangra [49]

Answer:

3

Explanation:

If oxygen reacts with iron, then both must be reactants and rust the product of that reaction

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Which statement best describes the characteristics of the Sun?
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Medium in size is your answer
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2 years ago
(C6H6) can be biodegraded by microorganism. if 30 mg of benzene is present, what amount of oxygen required for biodegradation, n
quester [9]

Answer:

36.92 mg of oxygen required for bio-degradation.

Explanation:

5C_6H_6+15O_2\rightarrow 12CO_2+15H_2O

Mass of benzene = 30 mg = 0.03 g (1000 mg = 1 g )

Moles benzene =\frac{0.03 g}{78 g/mol}=0.0003846 mol

According to reaction 5 moles of benzene reacts with 15 moles of oxygen gas.

Then 0.0003846 mol of benzene will react with:

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Mass of 0.0011538 moles of oxygen gas:

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36.92 mg of oxygen required for bio-degradation.

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2 years ago
What does it mean when a wave's amplitude increases?
djverab [1.8K]

Answer: It's frequency also increases.

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Hope this helps! Have a blessed day! Please mark me as brainlyest!?

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3 years ago
In one experiment 7.62 g of Fe are allowed to react with 8.67 g of S
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moles Fe = 7.62 g / 55.85 g/mol  

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1 mole Fe produces 1 mole FeS  

Therefore 7.62 g Fe can form 0.1364 moles FeS  

moles S = 8.67 g / 32.07 g/mol  

= 0.2703 moles S  

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The limiting reagent is the one that produces the least product. So Fe is limiting.  

The maximum amount of FeS possible is from complete reaction of all the limiting reagent.  

We have already determined that the Fe can form up to 0.1364 moles of FeS, so this is max amount of FeS you can get.  

Convert to mass

hope this helps :)

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