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Eva8 [605]
3 years ago
9

Peut-on être exact sans être précis?

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
8 0

Answer:

I think you can.

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1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?
Sav [38]
Wave speed = frequency x wavelength 
                     =   100 x 0.3
                     =       30 m/s.

Hope this helps!
5 0
3 years ago
Read 2 more answers
Select the correct answer
vekshin1

Answer:

Temperature

Explanation:

Kinetic energy of gass molecules is directly propotional to the temperature.

4 0
3 years ago
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What mass of CCl4 is required to prepare a 0.25 m solution using 115 g of hexane? (molar mass of ccl4 = 153.81 g/mol and molar m
natka813 [3]

4.42 g mass of CCl4 is required to prepare a 0.25 m solution using 115 g of hexane.

It's easy to find the molecular mass of a compound with these steps: Determine the molecular formula of the molecule. Use the periodic table to determine the atomic mass of each element in the molecule. Multiply each element's atomic mass by the number of atoms of that element in the molecule.

The molar mass of any compound can be found out by adding the relative atomic masses of each element present in that particular compound.

Hexane is an organic compound, a straight-chain alkane with six carbon atoms and has the molecular formula C₆H₁₄.

Therefore,

⇒ 0.115 g of Hexane x (0.25 mol CCl4/1 mol hexane) x (153.81 g of CCl4/1 mol CCl4) = 4.42g CCl4.

To learn more about CCL4 and Hexane here

brainly.com/question/15156642

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7 0
2 years ago
A chemistry graduate student is studying the rate of this reaction: H2CO3(aq) →H2O(aq)+CO2(aq)
dusya [7]

Answer:

Rate = 1.321M/s[H₂CO₃]¹ ; k = 1.32M/s

Explanation:

5 0
3 years ago
Which would<br> have more<br> particles:<br> 1 mole Au or<br> 1 mole Ag?
Sav [38]

Answer:

1 mole of each element have same number of particles. i.e. 6.02×10^23

Explanation:

So both have same atoms

5 0
2 years ago
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