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denis-greek [22]
3 years ago
15

Atmospheric pollution is the worst when: natural gas is burned coal is burned geothermal heat is used to generate electricity

Chemistry
1 answer:
natta225 [31]3 years ago
4 0
The answer is Coal. Atmospheric pollution is least when geothermal electricity is used to produce electricity.
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What is the molarity of 200. mL of solution containing 4.50 moles of ZnCl2?
MariettaO [177]

Answer:

Molarity of solution = 0.9 M

Explanation:

Given data:

Moles of ZnCl₂ = 4.50 mol

Volume of solution = 200 mL

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Now we will convert the volume in L.

200 mL×1 L/1000 mL = 0.2L

M = 4.50 mol / 0.2 L

M = 0.9 M

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Answer:

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Explanation:

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Q 9.3: how many triplets would you expect to observe in the 1h nmr spectra for o-chlorotoluene
agasfer [191]
Hello!

You would expect to observe 2 triplets in the ¹H NMR spectra for o-chlorotoluene. 

Multiplicity observed in ¹H NMR spectra when the atom couples with a neighbor ¹H atom. The multiplicity is equal to N+1 where N is the number of neighbor atoms. 

To observe a triplet, you'll need a molecule with 2 neighbor atoms. In o-chlorotoluene (shown in the figure), only protons C and D have 2 neighbor atoms (B and D; A and C, respectively), so you'll expect to see a 2 triplets. 

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