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Shtirlitz [24]
3 years ago
12

A student is trying to calculate the density of an ice cream cone. She already knows the mass, but she needs to determine the vo

lume as well. Which of the following formulas can be used to calculate the volume of the cone?
V equals four-thirds times pi times r cubed
V equals one-third times pi times r squared times h
V = s3
V = πr2h
Chemistry
2 answers:
lyudmila [28]3 years ago
8 0

Answer:

V equals one-third times pi times r squared times h

Explanation:

IgorLugansk [536]3 years ago
6 0
<span>V equals one-third times pi times r squared times h</span> 
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What is the density of ammonia (NH3) at 293 K and 0.913 atm?
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Answer:  The density of  Ammonia is 0.648 g/l

Explanation:

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Mass of one mole of  Ammonia (NH3) = 17.031g

Volume =?

Using the ideal gas law we can determine the volume.

PV = nRT

P = 0.913 atm, V= ?, n = 1, R = 0.08206 L.atm/K, and T= 293K

Make V the subject of the formular, we then have;

V= nRT/ P = 1 mol x 0.08206 L.atm/ K.mol x 293 / 0.913 atm

               V = 24.04358/ 0.913 = 26.3L

Having gotten the value of Volume in this question, we then go back to solve for density.

Density = Mass/ Volume

                17.031g/ 26.3L = 0.64756 ≈ 0.648 g/l

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