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egoroff_w [7]
3 years ago
11

I give brainliest pls help

Chemistry
2 answers:
ExtremeBDS [4]3 years ago
5 0

Answer:

A

Explanation:

Radiation can come from the Sun

12345 [234]3 years ago
3 0

Great Question! Sand Becoming Hot In The Sunlight is The Correct Answer So your Answer Choice Would be Letter "A"

Have A Great Day!

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Answer:

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G, H, O, N, Na, P

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If a stone with an original velocity of 0 is falling from a ledge and takes 8 seconds to hit the ground what is the final veloci
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How many moles are present in 3.4 x 1023 atoms of Na?
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<h3><u>moles of H2SO4</u></h3>

Avogadro's number (6.022 × 1023) is defined as the number of atoms, molecules, or "units of anything" that are in a mole of that thing. So to find the number of moles in 3.4 x 1023 molecules of H2SO4, divide by 6.022 × 1023 molecules/mole and you get 0.5646 moles but there are only 2 sig figs in the given so we need to round to 2 sig figs. There are 0.56 moles in 3.4 x 1023 molecules of H2SO4

Note the way this works is to make sure the units are going to give us moles. To check, we do division of the units just like we were dividing two fractions:

(molecules of H2SO4) = (molecules of H2SO4)/1 and so we have 3.4 x 1023/6.022 × 1023 [(molecules of H2SO4)/1]/[(molecules of H2SO4)/(moles of H2SO4)]. Now, invert the denominator and multiply:

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2 years ago
What are some genetic diseases?
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Down Syndrome- is when you have an extra 21st chromosome.

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8 0
3 years ago
Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is _______ , and the chem
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Answer:

Hello my Friend! The answer is: Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is +3 , and the chemical formula of the compound is Mn2O3.

Explanation:

Manganese can have two oxidation states: +2 and +3, but in this case, the "(III)"  indicates that in this compound, the state of oxidation is +3.

7 0
3 years ago
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