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olga2289 [7]
3 years ago
7

Help me rn plz......​

Chemistry
2 answers:
mel-nik [20]3 years ago
8 0
Anwers is B hope it helps please give me brainlessly please thanks have a nice day
dimulka [17.4K]3 years ago
3 0

Answer:

Explanation:

B

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The highest energy level of sodium contains ________ electron(s).
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Answer:

A

Explanation:

The group number of an element is equal to the number of electrons the outermost shell (or highest energy level) contains

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3 years ago
A gas occupies a volume at 34.2 mL at a temperature of 15.0 C and a pressure of 800.0 torr. What will be the volume of this gas
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The answer is 34.1 mL.
Solution:
Assuming ideal behavior of gases, we can use the universal gas law equation
     P1V1/T1 = P2V2/T2
The terms with subscripts of one represent the given initial values while for terms with subscripts of two represent the standard states which is the final condition.
At STP, P2 is 760.0torr and T2 is 0°C or 273.15K. Substituting the values to the ideal gas expression, we can now calculate for the volume V2 of the gas at STP:
     (800.0torr * 34.2mL) / 288.15K = (760.0torr * V2) / 273.15K
     V2 = (800.0torr * 34.2mL * 273.15K) / (288.15K * 760.0torr)
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3 0
3 years ago
Read 2 more answers
An atom whose valence electrons conform to the octet rule is:
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Explanation:

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3 years ago
9. How many moles are in 6.022 x 1024 atoms of oxygen?
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Answer:

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The mole (mol) is the amount of a substance that contains the same number of entities as there are atoms in exactly 12 g of carbon-12. One mole (1 mol) contains 6.022x1023 entities (to four significant figures).

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If you are using a thermometer, you are measuring the.....?
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