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Crazy boy [7]
3 years ago
14

So our professor didn't go over this but is freshly cut sodium, but rapidly tarnishes on contact with air a physical or chemical

property?​
Chemistry
1 answer:
Anna35 [415]3 years ago
6 0

Answer:

Hey!

After the slight confusion (haha)...

Your answer should be a CHEMICAL CHANGE / PROPERTY

Explanation:

Its CHEMICAL because the sodium has reacted with the air (oxygen in technical terms) which then forms SODIUM OXIDE...the tarnishing of the cut sodium surface it a thin layer of the SODIUM OXIDE...

HOPE THIS HELPED!

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netineya [11]

Answer: 26.54 grams

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of lithium nitride}=\frac{12.87g}{34.83g/mol}=0.369moles

Li_3N+3H_2O\rightarrow 3LiOH+NH_3  

Li_3N is the limiting reagent as it limits the formation of product and H_2O is the excess reagent

According to stoichiometry :

As 1 moles of Li_3N give = 3 moles of LiOH

Thus 0.369 moles of O_2 give =\frac{3}{1}\times 0.369=1.108moles  of LiOH

Mass of LiOH=moles\times {\text {Molar mass}}=1.108moles\times 23.95g/mol=26.54g

Thus  26.54 g of LiOH will be produced from the given mass.

4 0
3 years ago
What types of radiation cause the parent isotope to change into a different element?
kvv77 [185]

Answer:

Beta decay is most common in elements with a high neutron to proton ratio. Gamma decay follows the form: In gamma emission, neither the atomic number or the mass number is changed. A high energy gamma ray is given off when the parent isotope falls into a lower energy state.

Explanation:

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3 0
3 years ago
How is oxygen different than neon explain your answer
lora16 [44]
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5 0
3 years ago
What is the bonding continuum?
Deffense [45]
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6 0
2 years ago
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lora16 [44]
The chemical reaction would be:

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Hope this answers the question.
7 0
3 years ago
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