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love history [14]
3 years ago
9

Which group of elements is considered the most reactive non-metals?

Chemistry
2 answers:
Eva8 [605]3 years ago
6 0
<h2>Question:</h2>

Which group of elements is considered the most reactive non-metals?

<h2>Answer:</h2>

<u>D</u><u>.</u><u> </u><u>Noble</u><u> </u><u>Gases</u><u> </u>

  • <u>Th</u><u>e </u><u>noble</u><u> </u><u>gasses</u><u> </u><u>are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element.</u>

<h2><u>#CARRYONLEARNING</u><u> </u></h2><h2><u>#STUDYWELL</u><u> </u></h2>
Lina20 [59]3 years ago
3 0
The answer would be C. Halogens. Noble gases are NON reactive and the others are less reactive. Halogens are the most reactive non metals.
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There are ________ unpaired electrons in the Lewis symbol for a nitride ion.
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Answer:

There are no unpaired electrons.

Explanation:

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1. (8pt) Using dimensional analysis convert 600.0 calories into kilojoules
Ivanshal [37]

Answer:

1. 2.510kJ  

2. Q = 1.5 kJ

Explanation:

Hello there!

In this case, according to the given information for this calorimetry problem, we can proceed as follows:

1. Here, we consider the following equivalence statement for converting from calories to joules and from joules to kilojoules:

1cal=4.184J\\\\1kJ=1000J

Then, we perform the conversion as follows:

600.0cal*\frac{4.184J}{1cal}*\frac{1kJ}{1000J}=2.510kJ

2. Here, we use the general heat equation:

Q=mC(T_2-T_1)

And we plug in the given mass, specific heat and initial and final temperature to obtain:

Q=236g*0.24\frac{J}{g\°C} (34.9\°C-8.5\°C)\\\\Q=1495.3J*\frac{1kJ}{1000J} \\\\Q=1.5kJ

Regards!

7 0
2 years ago
PLEASE HELP ME ASAP ILL MARK U AS BRILLIANT
faust18 [17]

Answer:

19 D

20 C

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22 A

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Explanation:

See the periodic table

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3 years ago
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Bingel [31]

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Explanation:

1. one compound is split into 2 elements

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4. 2 compounds become one compound

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