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3 years ago

Why neon is special from other chemical elements

Chemistry

2 answers:

Komok [63]3 years ago

5 0

Answer: it has full valence shells

Explanation: Hope this is it

Grace [21]3 years ago

4 0

Answer:

Neon, along with helium, argon, krypton and xenon, make up the group known as noble gases. These are the most stable and least reactive elements due to having full valence shells (the outer shell has the max number of electrons, two for helium, eight for the rest).

Explanation:

Hope it helps

PlS MARK BRAINLIEST <3

Tori

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A tetraphenyl phosphonium chloride (TPPCl) powder (FW=342.39) is 94.0 percent pure. How many grams are needed to prepare 0.45 L

slega [8]

Answer:

5.41 g

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For tetraphenyl phosphonium chloride :

Molarity = 33.0 mM = 0.033 M (As, 1 mM = 0.001 M)

Volume = 0.45 L

Thus, moles of tetraphenyl phosphonium chloride :

$Moles=0.033 \times {0.45}\ moles$

Moles of TPPCl = 0.01485 moles

Molar mass of TPPCl = 342.39 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$0.01485\ g= \frac{Mass}{342.39\ g/mol}$

Mass of TPPCl = 5.0845 g

Also,

TPPCl is 94.0 % pure.

It means that 94.0 g is present in 100 g of powder

5.0845 g is present in 5.41 g of the powder.

Answer - 5.41 g

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4 years ago

80 points!!

ikadub [295]

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step 1.) turn on the laser pointer point it up to the ceiling.

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(I hope this helps!)

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Approximately, how many days does it take for an insect to grow from an egg to an adult?

vlabodo [156]

D.)14 to 16 days ... at least for a fly with is an insect also
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3 years ago

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The theoretical yield is the amount of product actually produced. a. True b. False

jolli1 [7]

Answer: