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Ilia_Sergeevich [38]
3 years ago
13

You are trying to make a sugar water solution by dissolving solid sugar into liquid water. You would like to increase (speed up)

the rate of dissolving.
(a) What should you do to the temperature of the water? (Increase it or decrease it?) Explain your reasoning.


(b) What should you do to the size of the sugar particles? (Increase it or decrease it?) Explain your reasoning.
Chemistry
1 answer:
timofeeve [1]3 years ago
3 0

Answer:

mmmmmmmmmmmm

Explanation:

mmmmmmmmm

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The reaction of hydrogen sulfide(g) with oxygen(g) to form water(l) and sulfur dioxide(g) proceeds as follows: 2H2S(g) 3O2(g)2H2
Aleks [24]

Answer: The value of \Delta H is 1118 .

Explanation:

To calculate the number of moles,  we use the equation:

\text{Moles of solute}=\frac{\text{given mass}}{\text{molar mass}}    

\text{Moles of} H_2S}=\frac{9.82g}{34.1g/mol}=0.288mol    

The balanced chemical reaction is:

2H_2S(g)+3O_2(g)\rightarrow 2H_2O(l)+2SO_2(g)

Given :

Energy released when 0.288 mole of H_2S is reacted =  161 kJ

Thus Energy released when 2 moles of H_2S is reacted = \frac{161}{0.288}\times 2=1118kJ

Thus the value of \Delta H is 1118.

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3 years ago
Which is the MOST precise measurement this cylinder gives for the volume of liquid it contains?
disa [49]

Hello! Before I answer to your question, please be sure to include a picture or else a report will be filed for your question would be commenced. You are lucky I have this for my homework tonight and I figured it out. Thank you:

The answer to your question would be as followed:

The most precise measurement for the cylinder you are mentioning is <em><u>B. 43.0mL</u></em>

6 0
3 years ago
Identify the reasons that cities boomed during the Middle Ages.
atroni [7]

Answer:

Explanation:

The reasons that cities boomed during the Middle Ages are more employment opportunities, increased trade, and growing interest in culture and art.

7 0
3 years ago
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What do these two changes have in common? snails growing shells a slice of banana turning brown
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Answer:

both are done due to the enviroment??

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marissa [1.9K]

Answer:

<h2>D. Nonpolar molecules</h2>

Explanation:

The non-polar molecules are held in place by very weak van der Waals forces, hence making it to have the least melting and boiling point.

The melting points of substances is the point at which it changes from solid to liquid, it can be very difficult to ascertain that why mostly the melting point is given as a range of values.

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