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Nina [5.8K]
3 years ago
7

Which of the following formulas represents an empirical formula?

Chemistry
1 answer:
luda_lava [24]3 years ago
8 0

Answer:

C is the only option that represents an empirical formula, as it can't be simplified further.

You can turn C8H18, for example: to C4H9, but you can't do the same with C2H5.

Let me know if this helps!

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What does reaction b tell you about the type of molecule h2co3 is?
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H2o means water and co3 is co-signs
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2 years ago
5. A beam of photons with a minimum energy of 222 kJ/mol can eject electrons from a potassium surface. Estimate the range of wav
torisob [31]

Answer: The range of wavelengths of light that can be used to cause given phenomenon is 8.953 \times 10^{21} m.

Explanation:

Given: 222 kJ/mol (1 kJ = 1000 J) = 222000 J

Formula used is as follows.

E = \frac{hc}{\lambda}

where,

E = energy

h = Planck's constant = 6.625 \times 10^{-25} Js

c = speed of light = 3 \times 10^{8} m/s

Substitute the values into above formula as follows.

E = \frac{hc}{\lambda}\\222000 J = \frac{6.625  \times 10^{-34}Js \times 3 \times 10^{8} m/s}{\lambda}\\\lambda = 8.953 \times 10^{21} m

Thus, we can conclude that the range of wavelengths of light that can be used to cause given phenomenon is 8.953 \times 10^{21} m.

7 0
3 years ago
During an experiment, a scientist places a heat lamp above a bowl of water and uses the lamp to heat up the water. How does heat
dlinn [17]

Answer:

Radiation

Explanation:

6 0
2 years ago
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What type of organism might contain this type of cell
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is there supposed be a picture with the question?


3 0
3 years ago
Calculate the volume of a 0.200 M KCl solution containing 5.00 10-2 mol of solute. Enter your answer in the provided box. IL
Paul [167]

Answer:

The volume of a 0.200 M KCl solution containing 5.00 10-2 mol of solute is 0,25 L

Explanation:

Molarity (M) means: moles of solute which are contained in 1 L of solution.  

In this case we have 0,2 moles which are in 1 L, so, as we have 5x10*-2 moles we have to apply a rule of three to find out the volume.

0,2 moles ........... 1 L

5x10*-2 moles ........... x

x= (5x10*-2 moles . 1 L) / 0,2 moles = 0.25L

(we can also say 250 mL)

4 0
3 years ago
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