A glass of cold milk sometimes forms a coat of water on the outside of the glass

Question

A glass of cold milk sometimes forms a coat of water on the outside of the glass (often referred to as 'sweat"). How does most of the water get there? Water evaporates from the milk and condenses on the outside of the glass. The glass acts like a semi-permeable membrane and allows the water to pass, but not the milk. Water vapor condenses from the air. The coldness causes oxygen and hydrogen from the air combine on the glass forming water. What is the mass of the solution when 1 pound of salt is dissolved in 20 pounds of water? 19 Pounds 20 Pounds. Between 20 and 21 pounds. 21 pounds More than 21 pounds. The diagram represents a mixture of S atoms and O, molecules in a closed container. Which diagram shows the results after the mixture reacts as completely as possible according to the equation 2S + 30_2, - 2SO_5, ? a b c d e

Explanation / Answer

1)

Since milk is cold, it can absorb heat. The container absorb heat from air and thus the water vapour in air gets condensed

Answer: water vapour condenses from the air

2)

mass of solution = mass of solute + mass of solvent

= 1 pounds + 20 pounds

= 21 pounds

Answer: 21 pounds

3)

initial atom of S = 6

molecules of O2 = 6

so,

6 molecules of O2 will combine with 4 atom of S to form 4 atoms of SO3.

Remaining 2 atom of S remains

Answer: d

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