Answer:
"The sun's energy comes from within the sun itself. The sun generates energy from a process called nuclear fusion"
Explanation:
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Hope This helps! (づ ̄3 ̄)づ╭❤~
1. Solids have a definite<span> volume and </span>shape<span> because particles in a </span>solid<span> vibrate around </span>fixed<span> locations.
2. </span><span>A </span>gas<span> is a substance with no </span>definite volume<span> and no </span>definite<span> shape. </span>Solids have volumes<span> that </span>do not<span> change easily.
3. </span><span>The atoms and molecules in </span>gases<span> are much more spread out than in </span>solids<span>.</span>
Answer:
32.3%
Explanation:
Percent yield is defined as:
Actual yield (125.5g) / Theoretical Yield * 100
To find theoretical yield we have to find the moles of aluminium. As 2 moles of Al produce 2 moles of AlCl3, the moles of Al = Moles AlCl3.
With these moles we can find the mass assuming a 100% of yield (Theoretical Yield) as follows:
<em>Moles Al = Moles AlCl3 (Molar mass Al = 26.98g/mol)</em>
72g Al * (1mol / 26.98g) = 2.67 moles AlCl3
<em>Mass AlCl3 (Molar mass: 133.34g/mol)</em>
2.67 moles AlCl3 * (133.34g / mol) = 355.8g AlCl3
Percent Yield = 125.5g / 355.8g * 100 =
<h3>32.3% </h3>
It is a good idea because when mercury heats up, the molecules spread farther apart. Therefore, making them look to have expanded. Thermometers that are digital use a sensor to, as you would say feel the temperature around it.