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slavikrds [6]
3 years ago
14

Which of the following statements is true? A. Democritus discovered the proton. B. Dalton discovered the proton. C. Thomson disc

overed the electron. D. Rutherford discovered the neutron.
Chemistry
1 answer:
iren2701 [21]3 years ago
8 0

It’s C.thomson discovered the electron

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The answer is : A

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Draw the product you expect from the reaction of (R)-2-bromooctane with -CH3CO2- and Br-.. Use the wedge/hash bond tools to indi
Basile [38]

From the mechanism shown, the major product of the reaction is (S)-(+)-2-octanol.

<h3>What is an SN2 reaction?</h3>

An SN2 reaction is one in which there is an inversion of configuration and the attack of the nucleophile occurs from behind the substrate.

As shown in the mechanism attached here, the major product of this reaction is (S)-(+)-2-octanol.

Learn more about SN2 reaction:brainly.com/question/14080839

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6 0
1 year ago
Boron has two isotopes, Boron 10 which has a mass of 10.0129 amu and Boron-11 with a mass of 11.0093 amu. B-10 occurs 84.74% of
podryga [215]

The average atomic mass of Boron: 10.431 amu

<h3>Further explanation   </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  

Mass atom X = mass isotope 1 . % + mass isotope 2.%  + ...

The average atomic mass of boron :

\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu

3 0
3 years ago
Question 2: Which of the following is NOT true about streams?
mafiozo [28]

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q 3 c q 2 d

Explanation:

8 0
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A galvanic^cell consists of left ompartmcnt with a tin elcctrode in contact with 0.1 M Sn(NO_3)_2(aq) and a right compartment wi
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Electrons will flow from left to right through the wire.

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2 years ago
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