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Naddik [55]
3 years ago
10

How many moles are there in 140.2 g of Ca

Chemistry
2 answers:
olga nikolaevna [1]3 years ago
7 0

Answer:

3.5

Explanation:

11111nata11111 [884]3 years ago
7 0
Ca molar mass = 40.078 g/mol

Therefore,

(40.078 g/mol)(1 mol/140.2 g) = 0.285 mol Ca
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Which 2 resonance forms destablize the carbocation intermediate if bezonitrile undergoes chlronation at the ortho or para positi
Anna11 [10]

The question is incomplete, the complete question is shown in the image attached

Answer:

A and B

Explanation:

The electrophilic substitution of arenes yields a cation intermediate. The positive charge of the cation is delocalized over the entire ring.

The -CN group directs incoming electrophiles to the ortho/para position. The resonance structures for the chlorination of benzonitrile are shown in the question.

Recall that -CN is an electron withdrawing group. The resonance forms that destablize the carbocation intermediate are those in which the -CN group is directly attached to the carbon atom bearing the positive charge as in structures A and B.

8 0
3 years ago
Draw the structural formula of the major product of the reaction of (S)-2,2,3-trimethyloxirane with MeOH, H . Use the wedge/hash
Katarina [22]

Answer:

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Explanation:

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See figure 1

I hope it helps!

8 0
3 years ago
Describe one advantage and one disadvantage of replacing standard bulbs with led lighting
Leno4ka [110]
Advantages

less wasted energy

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Disadvantages

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7 0
3 years ago
Which element is in group 2 and period 7 of the periodic table
bekas [8.4K]
Hey
      Sorry, But There Is No 7th Element in group two. only six which is Radium.
     ~Spades15
3 0
3 years ago
What are the atoms of Fe(SCN)3
Igoryamba

Answer:

55.845

Explanation:

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