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nexus9112 [7]
2 years ago
12

What is the amount of energy (in kJ) released when 1 mole of photons are emitted from an electron transition of n

Chemistry
1 answer:
pychu [463]2 years ago
3 0

Explanation:

The formula applied here is rydberg's equation (Bohr's equation.)

E = -Rh (1/(nf)^2 - 1/(ni)^2)

where Rh = Rydberg constant = 2.8*10^-18

1 mole = 6.02 * 10^23 particles

nf & ni stand for final & initial principal quantum numbers respectively.

your question lacks the principal quantum numbers.

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What metal will have properties most similar to those of chromium (Cr)? Why?
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5 0
3 years ago
If HCl is a 0.05 M solution and 50 mL is used to titrate the NaOH, what is the molarity of NaOH if the flask contains 100 mL?
Liono4ka [1.6K]

Answer:

Molarity of NaOH = 0.025 M

Explanation:

Given data:

Molarity of  HCl = C₁ = 0.05 M

Volume of HCl = V₁= 50 mL

Molarity of NaOH = C₂=?

Volume of NaOH =V₂= 100 mL

Solution:

Formula:

C₁V₁  = C₂V₂

C₁ = Molarity of  HCl

V₁  = Volume of HCl

C₂ = Molarity of NaOH

V₂ = Volume of NaOH

Now we will put the values:

C₁V₁  = C₂V₂

0.05 M × 50 mL = C₂ × 100 mL

2.5 M.mL =C₂ × 100 mL

C₂  = 2.5 M.mL /100 mL

C₂  = 0.025 M

7 0
3 years ago
Do gases have mass and weight?​
slega [8]

Answer:

yes

Explanation:

they di because they have mass and wait

7 0
3 years ago
Why does magnesium nitrate not react with Magnesium sulfate?
Svetllana [295]
Magnesium nitrate o not react with magnesium sulfate because it cannot displace the ions involved. The cations are the same so they just cancel the charges. If you look at it, even of a reaction occurs the product will still be the same substances.
3 0
2 years ago
Rita wants to make some toast for breakfast. She puts a slice of bread in the toaster. After 3 min, Rita notices that the sides
fredd [130]
The answer is D


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6 0
3 years ago
Read 2 more answers
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