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GalinKa [24]
3 years ago
15

Which metalloid has three valence electrons? boron arsenic silicon lithium

Chemistry
2 answers:
blagie [28]3 years ago
5 0

Answer:

the correct answer is baron

Zina [86]3 years ago
3 0

Answer:

boron

Explanation:

bc the Boron Family is named after the first element in the family. atoms in this family have 3 valence electrons. this family includes a metalloid (boron), and the rest are metals.

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Part C: complete the third column <br> Part D: complete the fourth column
Helga [31]

Answer:

Part C: P2 = 0.30 atm

Part D: V1 = 16.22 L.

Explanation:

Part C:

Initial pressure (P1) = 2.67 atm

Initial volume (V1) = 5.54 mL

Final pressure (P2) =.?

Final volume (V2) = 49 mL

The final pressure (P2) can be obtained as follow:

P1V1 = P2V2

2.67 x 5.54 = P2 x 49

Divide both side by 49

P2 = (2.67 x 5.54)/49

P2 = 0.30 atm

Therefore, the final pressure (P2) is 0.30 atm

Part D:

Initial pressure (P1) = 348 Torr

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Final pressure (P2) = 684 Torr

Final volume (V2) = 8.25 L

The initial volume (V1) can be obtained as follow:

P1V1 = P2V2

348 x V1 = 684 x 8.25

Divide both side by 348

V1 = (684 x 8.25)/348

V1 = 16.22 L

Therefore, the initial volume (V1) is 16.22 L

6 0
3 years ago
What is the percent yield for a reaction if we predicted the formation
bogdanovich [222]

Answer:

18.1%

Explanation:

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A bond where electrons are transferred from a cation to an anion is called a (n) ___________bond.\
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When elements transfer electrons from a cation and an anion it called ionic bond.
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