2 years ago

4HCl(g) + Si (s) ⇌ SiCl4 (l) + 2H2 (g) would be classified as a(n):

Chemistry

1 answer:

zheka24 [161]2 years ago

3 0

Answer:

it will be classical as gas

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What is the concentration in mass percent of a solution prepared from 50.0g nacl and 150.0g of water?

otez555 [7]

M(NaCl)=50.0 g
m(H₂O)=150.0 g

m(solution)=m(NaCl)+m(H₂O)

w(NaCl)=100m(NaCl)/m(solution)=100m(NaCl)/{m(NaCl)+m(H₂O)}

w(NaCl)=100*50.0/(50.0+150.0)=25%

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3 years ago

What class of organic product results when 1-heptyne is reacted with disiamylborane followed by treatment with basic hydrogen pe

yuradex [85]

Answer:

aldehyde

Explanation:

Aldehydes are a large class of reactive organic compounds (R-CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.

So, when terminal alkynes, for example, 1-heptyne react on Hydroboration oxidation(i.e. disiamylborane followed by treatment with basic hydrogen peroxide), the formation of aldehyde occurs.

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2 years ago

Please someone answer this for me ASAP

Alex777 [14]

Answer:

I'm not 100% sure but I think it is b I'm not great with math tho

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2 years ago

Nickel has chemical symbol Ni and the atomic 28. How many protons,neutrons,and electronic would be found in an atom of nickel-78

ira [324]

In nickel-78, there are 28 protons, 28 electrons, and 50 neutrons.

The protons is always the atomic number.
The electron would always be the atomic number when it's a neutral atom. (Different for isotopes)
The neutrons is always the number that makes up the mass with protons. You can figure it out by subtracting atomic mass by protons. (78-28 = 50)

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2 years ago

Read 2 more answers

Is H-3 stable?<br> Is He-3 stable?<br> Is He-5 stable?<br> Is Li-7 stable?<br> Is Be-7 stable?

kiruha [24]

Answer:

no, yes, no, yes, yes

Explanation:

good luck!

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2 years ago