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const2013 [10]
3 years ago
6

True or False.. Light from an unshaded bulb radiates in all directions?? ​

Chemistry
1 answer:
IRINA_888 [86]3 years ago
4 0

Its is true that light from an unshaded bulb radiates in all directions

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How many moles are in 91.5 grams of Helium?
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In order to find the number of moles with a given mass of Helium, we need to use its molar mass, which is 4.0026g/mol, therefore we will have:

4.0026g = 1 mol of Helium

91.5g = x moles of Helium

x = 22.86 moles of Helium in 91.5 grams

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The sum of the potential energy and the kinetic energy of an object is its thermal energy. True or false?​
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Explanation:

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Antoine Lavoisier burned metals in sealed jars. What is your prediction of his experimental results?
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My prediction about the experimental results is that  the mass of the jar and contents remained the same after the metal was burned in the jar.

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