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lakkis [162]
3 years ago
12

Which answer choice is a way to speed up how fast a solute can dissolve in a solvent? A: heat

Chemistry
1 answer:
Lyrx [107]3 years ago
6 0
A heat is the answer I think
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How many moles would a 3.9 g sample of Calcium Chloride contain?​
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Answer:

You can view more details on each measurement unit: molecular weight of CaCl2 or grams This compound is also known as Calcium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CaCl2, or 110.984 grams.

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in a torricell barometer a pressure of one atmospheric pressure supports q 760 mm coloumn of mercury.if the original tube contai
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Answer:

The answer to the question is

The height of the mercury fluid column remain the same.

Explanation:

The pressure, P in a column of fluid of height, h is given by

P = (Density p)×(height of fluid column h)×(gravity g)

Therefore, when the diameter is doubled we have

Density of the mercury in the tube with twice the diameter = (Mass of mercury)/(volume of mercury) where the volume of mercury = h×pi×(Diameter×2)^2/4 = h×pi×Diameter^2. Therefore the volume increases by a factor of 4 and therefore the mass increases by a factor of 4 which means that the density remains the same hence

P = p×h1×g = p×h2×g Therefore h1 = h2

The height of the fluid column remain the same

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3 years ago
What are Valence Electrons?
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Valence electrons are the electrons that are in an atom's outermost layer. 
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What is a compound?
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Heterogeneous mixture

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