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SpyIntel [72]
3 years ago
5

Which of the following can be achieved by using a visible-light spectrophotometer?

Chemistry
1 answer:
gulaghasi [49]3 years ago
5 0
1 and 2 i think this is the answer 
thnx u 

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A 10.0 g pat of butter raise the water level in a graduated cylinder by 11.6 mL. What is the density of the butter
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IgorLugansk [536]
1 mole of platinum has a mass of 195 g therefore 1 atom will have a mass of 195 g /(6.02 ×10^23) = 3.239 × 10^-22 g
Density is given by dividing mass by volume, thus to get volume, mass is divided by density. 
The volume = (3.239 × 10^-22)/21.4 
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But volume of a sphere is given by 4/3πr³
Therefore, r³ = 3.6129 × 10^-24 
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                      = 1.534 × 10^ -8 cm
Therefore, the radius of the platinum atom is 1.534 × 10^-8 cm

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Who developed the idea of electron shells also called orbital shells
alexandr402 [8]

Answer: Niels Bohr

Explanation:

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3 years ago
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