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harina [27]
3 years ago
11

What forces keep an air hockey puck hovering emotionless above an air hockey table

Chemistry
1 answer:
True [87]3 years ago
8 0

the puck's weight and the air blowing

Hope that helps :) Good luck!

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Advantages and disadvantages of titration?
alisha [4.7K]

Answer:

What are the advantages of titration?

Titrimetric analysis commonly referred to as volumetric analysis offers distinct advantages over cumbersome gravimetric methods:

Speed of analysis.

Instantaneous completion of reactions.

Greater accuracy due to minimization of material loss involved in decanting, filtration, precipitation or similar operations.

Explanation:

Disadvantages

It is a destructive method often using up relatively large quantities of the substance being analysed.

It requires reactions to occur in a liquid phase, often the chemistry of interest will make this inappropriate.

It can produce significant amounts of chemical waste which has to be disposed of.

It has limited accuracy.

<em>hope </em><em>this </em><em>helps </em><em>Plea</em><em>se</em><em> </em><em>inform</em><em> </em><em>me</em><em> </em><em>if</em><em> </em><em>its</em><em> </em><em>help</em><em>ful</em><em> </em>

5 0
3 years ago
a chemist is studying an unknown substance he can break it into its elemental only by using chemical means.Based on this observa
Vanyuwa [196]

Answer:

Compound

Explanation:

We want to know if it's a compound or a mixture.

An example of a mixture is salt water: you can heat it hot enough to boil off the water, leaving only the salt. This is a physical change, which is how you know it's a mixture.

Something like gold is a compound: if you heat it, or hit it, you'll still only have gold. You can only break it down by chemical means, which is how you know it's a compound.

4 0
3 years ago
The value of delta for the [C_rF_6]^3- complex is 182 kJ/mol. Calculate the expected wavelength of the absorption corresponding
kirza4 [7]

Answer:  Yes the absorb in the visible range.

Explanation:

The relationship between wavelength and energy of the wave follows the equation:

E=\frac{Nhc}{\lambda}

where,

E = energy of the wave  = 182 kJ/mol  = 182000 J/mol

N = avogadro's number =  6.023\times 10^{23}

h = plank constant = 6.6\times 10^{-34}Js^{-1}

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

\lambda = wavelength of the wave = ?

Putting all the values:

182000=\frac{6.023\times 10^{23}\times 6.6\times 10^{-34}\times 3\times 10^8m/s}{\lambda}

\lambda=0.65\times 10^{-6}m=650nm    (1nm=10^{-9}m)

The wavelength range for visible rays is 400 nm to 750 nm, thus the complex absorb in the visible range.

5 0
3 years ago
Please check if i did it right. did i put the right electric charge
Amiraneli [1.4K]
Yes it’s correct your answer connect with eachother I did this before
3 0
3 years ago
Which of these types of changes is a physical change?
Leto [7]

The correct answer is A. Can I get the Brainliest?

6 0
3 years ago
Read 2 more answers
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