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OverLord2011 [107]
2 years ago
11

Which element has the least density at STP?

Chemistry
1 answer:
vladimir2022 [97]2 years ago
8 0

Answer:

Helium, this noble gas has the least density at STP

Explanation:

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Strontium oxide + ? =<br>stronium chloride​
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Answer:

strontium oxide + hydrochloric acid (HCL) =   strontium chloride​

8 0
2 years ago
Suppose 'A' is a liquid aromatic compound with molecular weight 78 and burns with sooty flame. a.Give the name of the compound '
Oliga [24]

Aromatic compounds are compounds that contain carbon-carbon multiple bonds.

The question did not mention that a heteroatom is present in the compound so we can assume that there is none of such. In that case, the compound contains only hydrogen and carbon.

So,

(CH)n = 78

where n is the number of each atom present.

(12 +1)n = 78

n = 78/13

n = 6

The molecular formula of the compound is C6H6

When C6H6 is treated with .conc.HNO3/conc.H2SO4 the compound shown in image 1 is formed. The reaction occurs at the C-C multiple bond.

When C6H6 is reacted with chlorine in the presence of sunlight, hexachlorobenzene (shown in image 2 attached) is formed.

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2 years ago
63. Use VSEPR theory to predict the structure of these
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Sulphate ion is used but fornyour kind information there ain't no place
4 0
3 years ago
Read 2 more answers
Which is one way scientists indicate how precise And accurate their experimental measurements are?
nadezda [96]
<span>. They make sure their experiments can be repeated</span>
8 0
3 years ago
An aqueous solution of methanol (MM = 32.04 g/mol) has a molality of 8.83 m and a density of 1.15 g/mL. What is the molarity of
hodyreva [135]

We have that the  the molarity of methanol in the solution is mathematically given as

Morality=7.91mol/l

<h3>Chemical Reaction</h3>

Question Parameters:

An <u>aqueous </u><em>solution </em>of methanol (MM = 32.04 g/mol)

A molality of 8.83 m and a density of 1.15 g/mL.

Generally the equation for the   is mathematically given as

Morality=\frac{moles of solute }{mass of the solvent}

where

Mass of solution=(100+282.2)

Mass of solution=1289.9

Volume=1289.9/1.15

Volume=1.115L

Therefore

Morality=\frac{moles of solute }{mass of the solvent}

Morality=8.83/1.115

Morality=7.91mol/l

For more information on Chemical Reactionvisit

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7 0
2 years ago
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