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balandron [24]
3 years ago
11

Heat from the sun travels to the Earth _____. in low frequency waves through the movement of molecules in high frequency waves b

y conduction and convection
Chemistry
1 answer:
raketka [301]3 years ago
5 0
Radiation

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What volume of air is needed to burn completely 100cm of propane?
Evgesh-ka [11]

Answer:

See below

Explanation:

propane mole weight = 44 gm / mole

100 gm / 44 gm / mole = 2.27 moles

From the equation, 5 times as many moles of OXYGEN (O2)are required

   = 11.36 moles of oxygen

           at <u>STP</u> this is 254.55  liters of O2 (because 22.4 L = one mole) and

Using oxygen as 21 percent of air means that

      .21 x = 254.55 =       x = <u>1212.12 liters of air required </u>

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2 years ago
What is the name of an atom with 3 protons and 4 neutrons?
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Answer:

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4 0
3 years ago
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Which term is de ned as the region in an atom where an electron is most likely to be located?
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Orbital
All atoms have the same number of electrons as protons. Negative electrons are attracted to the positive nucleus. This force of attraction keeps electrons constantly moving around the nucleus. The region where an electron is most likely to be found is called an orbital.
Here you go :)
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3 years ago
Balance the following reaction.<br> A.) 4<br> B.) 2<br> C.) 5<br> D.) blank<br> E.) 3
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Answer:

C.5

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I WILL GIVE 50 POINTS AND BRAINLIEST What is the volume of 41.2g argon at stp???
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