Avegadro's number = 6.02 x10^23 atoms
so
3.5g x 1mol/63.55g Cu x 6.02 x 10^23/ 1mol=3.32 x 10^22 atoms
Dalton's Theory:
1. all elements is composed of very small particles called atoms
<span>2. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and properties. </span>
3. atoms cannot be divided, created, or destroyed
<span>4. Atoms of different elements combine in simple whole number ratios to form chemical compounds </span>
<span>5. In chemical reactions, atoms are combined, separated, or rearranged.
</span>So as we can see; the first two sentences are correct while the third sentence not supported in the theory
Explanation:
In the coupling reaction of the dimethylaniline and diazonium salt, both electronic and steric factors play a very important role. The resonance structures of dimethylaniline favor electrophilic attack at both the ortho and the para positions. But on the other hand, diazonium coupling produces the majority of the para product because the steric factor plays role here in this reaction.
The bulky dimethylamino groups on the dimethylaniline make it difficult for electrophile to approach ortho position and also, diazonium ion is relatively large. The two steric factors reduce amount of the ortho isomer and para isomer predominates.
T1=298.15K, P1=0.96 atm, P2=1.25 atm, T2=?
(P1/T1)=(P2/T2)
(0.96)/(298.15)=(1.25)/(T2)
(1.25)/((.96)/(298.15))=T2
T2=388.2161458K
T2=115.0661 degrees Celsius
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