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Luda [366]
3 years ago
5

PLSSS HELP ASAPP ITS 200 points and I give brainlist

Chemistry
2 answers:
nirvana33 [79]3 years ago
8 0
A seem good hope it correct 9
Ad libitum [116K]3 years ago
6 0

1. should be A

Explanation:

because that's what I got

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Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that _____.
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What is the maximum number of electrons an s subshell can have?
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Answer:

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What is 694,563,239 rounded to the nearest thousand
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694,563,239 rounded to the nearest thousand is 694,563.
 
It's because the first digit from the right is for ones, second for tens, third for hundreds and fourth for thousands and that's the one that we should take a closer look at. You can round it either to 3 or 4, depends on the digit of hundreds. In this case 3239 is clearly closer to 3000 than 4000, that's why we round it to 694,563, not 694,564.
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A mixture of gases contains 4.46 moles of neon (Ne), 0.74 mole of argon (Ar), and 2.15 moles of xenon (Xe). Calculate the partia
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Explanation:

The partial pressure of an individual gas is equal to the total pressure of the mixture multiplied by the mole fraction of the gas.

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Explain why BH3 is trigonal planar and NH3 is trigonal pyramidal.
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Answer:o It is important to realise that mixing will be small unless there are electrons in the 4a1 LUMO, this is why NH3 is pyramidal while BH3 is planar! ... This mixing is very strong and stabilises the 3a1 MO substantially and hence NH3 is trigonal pyramidal and not planar.

Explanation:

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3 years ago
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