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liubo4ka [24]
4 years ago
11

a paint company ants totest wether a new additive will make thier paint resist fading. Which test would include andan acceptable

control group?
Chemistry
1 answer:
luda_lava [24]4 years ago
6 0
There are a few ways to do this. The best way I can think of is to start out the paint with no additives and have that as a control. You can test that on whatever your painting or do it in a lab with heat lamps and lights if that is a possible option. However you decide to do the testing, after starting with the control test, add different additives and see which ones fades less the original without any additives. This is the best scenario for a simple yet informative test.

Hope that helps!
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What volume of argon gas is equal to 1.60 grams of argon
Novosadov [1.4K]

Answer:

0.908 L.

Explanation:

  • Firstly, we should calculate the number of moles of 1.60 g argon.
  • n of Ar = mass / molar mass of Ar = (1.60 g) / (39.948 g/mol) = 0.04 mol.
  • |t is established  and known that the molar volume of a gas at STP (Standard Temperature and Pressure) is equal to 22.4 L for 1 mole of any ideal gas at a temperature of 273.15 K and a pressure of 1.00 atm.

<u><em>using cross multiplication:</em></u>

1.0 mole of Ar gas will occupy → 22.7 L

0.04 mole of Ar gas will occupy → ??? L

∴ The volume  occupied by Ar = (0.04 mole) (22.7 L) / (1.0 mole) = 0.908 L.


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3 years ago
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lutik1710 [3]

Answer: Option A

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I think it should be A 
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