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scoundrel [369]
4 years ago
15

A: -3.45 B: 17.45 C: 10.55 D: 3.55

Chemistry
1 answer:
Minchanka [31]4 years ago
6 0

Answer:

i think its b

Explanation:

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For case 1, what happens when an electron jumps from energy level 1 to energy level 3 in an atom?
BaLLatris [955]

Answer:

Case 1 (energy level): In an atom, an electron jumps from energy level 1 to energy level 3. ... The energy will increase.

Explanation:

4 0
3 years ago
The initial volume of a gas at a pressure of 3 atm is 5.2 L. What will the volume be if the pressure is increased to 15 atm?
julsineya [31]

Answer:

1 L

Explanation:

Use Boyle's Law, which is defined as:

p1v1 = p2v2

p1 = 3atm

v1 = 5.2L

p2 = 15atm

v2 = ?

We are solving for v2 because all other variables are given.

p1v1 = p2v2

(3atm)(5.2L) = (15atm)(v2)

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3 years ago
Select the correct answer.
MakcuM [25]

Answer:

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Explanation:

8 0
3 years ago
1.What percent of light passes through the sample if its absorbance A=2?
Dennis_Churaev [7]

1. The formula for absorbance is given as:

A = log (Io / I)

where A is absorbance, Io is initial intensity, and I is final light intensity

 

log (Io / I) = A

log (Io / I) = 2

Io / I = 100

 

Taking the reverse which is I / Io:

 

I / Io = 1 / 100

I / Io = 0.01

 

Therefore this means that only 0.01 fraction of light or 1% passes through the sample.

 

2. What is meant by transmittance values is actually the value of I / Io. So calculating for A:

 

at 10% transmittance = 0.10

A = log (Io / I)

A = log (1 / 0.10)

A = 1

 

at 90% transmittance = 0.90

A = log (Io / I)

A = log (1 / 0.90)

A = 0.046

 

So the absorbance should be from 0.046 to 1

 

3. at 10% transmittance = 0.10

A = log (Io / I)

A = log (1 / 0.10)

<span>A = 1</span>

3 0
3 years ago
The compound tyrosine contains 59.66% C, 6.12% H, 7.73% N, and 26.49% O by mass. What is the empirical formula of tyrosine?
Bezzdna [24]

Answer: C9H11O3N

Explanation:

The percentage by mass of each element is divided by its relative atomic mass. The lowest ratio is now observed. Each ratio is now divided by this lowest ratio and approximated to whole numbers. All these are shown in detail in the image attached.

3 0
3 years ago
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