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2 years ago

Does the temperature of the solvent (water) affect the rate of dissolving?

1 answer:

3 0

Yes. Heating up the solvent gives the molecules more kinetic energy. The more rapid motion means that the solvent molecules collide with the solute with greater frequency and the collisions occur with more force. Both factors increase the rate at which the solute dissolves.

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given the following list of densities, which material would float in a molten vat of lead provided that they do not themselves m

SIZIF [17.4K]

Answer:

Given the following list of densities, which materials would float in a molten vat of lead provided that they do not themselves melt?

Densities (g/mL): lead = 11.4, glass = 2.6, gold = 19.3, charcoal = 0.57, platinum = 21.4.

glass and charcoal

Explanation:

The density of molten lead is about 10.65Kg/m^3

By Archimedes principles, the buoyancy of an object in a fluid is proportional to the mass of fluid displaced

which in turn is proportional to the object's density

Generally an object well float when placed on a denser medium

glass =2.6, and charcoal =0.57 are both less dense so they will float on Lead

8 0

3 years ago

Which of the following properties can be used as evidence a chemical reaction has occurred? (Select all that apply)

frutty [35]

Density, odor, and color changes. Hope this helps ฅ^•ﻌ•^ฅ

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2 years ago

Read 2 more answers

The following are units for mass except _____. A. kg B. Mg C. mL D. cg

yarga [219]

Cg is not in units for mass

5 0

3 years ago

Help me please!!!!!!!!

alekssr [168]

Answer:

The element is CARBON

The number 6 refers to the ATOMIC NUMBER

the numbers 12, 13, and 14 refer to the ATOMIC MASS

how many protons and neutrons are in the first isotope?

6. 6

how many protons and neutrons are in the second isotope?

6. 7

how many protons and neutrons are in the third isotope?

6. 8

you are welcome :)

8 0

2 years ago

The formula for a chemical reaction is given. 2Na + 2H2O → 2NaOH + H2 Which of the following describes this reaction? Group of a

professor190 [17]

It is a reaction between an element and a compound that results in a different element and compound

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2 years ago

Does the temperature of the solvent (water) affect the rate of dissolving?​

Does the temperature of the solvent (water) affect the rate of dissolving?