Molecules of 1-bromopropane and 2-bromopropane differ in(1) molecular formula(2) structural formula(3) number of carbon atoms per molecule(4) number of bromine atoms per molecule

Answers

Answer 1
Answer:

Answer: (2) structural formula

Explanation:-

The compounds having similar molecular formula but different arrangement of atoms or groups in space are called isomers and the phenomenon is called as isomerism.  

1-bromopropane and 2-bromopropane are position isomers which have same molecular formula but different position of the functional groups attached.

The chemical formula for both the compounds 1-bromopropane and 2-bromopropane is CH_3CH_2CH_2Br. Thus both have same molecular formula , 3 carbon atoms per molecule and 1 bromine atom per molecule.


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Which scientist performed the cathode ray experiment leading to the discovery of electrons

Answers

The scientist that performed the cathode ray experiment leading to the discovery of electrons is the scientist Sir Joseph John Thompson or J.J. Thompson. It was theorized after the discovery that electrons are present in the atom. In this model, the atom is composed mainly of electrons. It was describe as plum pudding because the electrons are dispersed within the atom. 

John Thompson is the answer

Which of the following is a radioisotope used to date rock formations older than 50,000 years?a. Carbon-14.
b. Uranium-235.
c. Cobalt-69.
d. Carbon-12.

Answers

You use uranium, carbon 14 half life is such that after 50000 years there won't be much left in the sample.

How does the human eye see objects?A.
Light absorbed by objects, enters the eyes, and is refracted by the optic nerve in the retina.

B.
Light reflects off objects, enters the eyes, and is detected by the optic nerve in the retina.

C.
Light refracts off objects, enters the eyes, and is captured as a photograph by the lenses.

D.
Light reflects off objects, enters the eyes, and is detected by light-sensitive cells in the retina.

Answers

The human eye see objects through light reflects off objects, enters the eyes, and is detected by the optic nerve in the retina. The answer is letter B. The rest of the choices do not answer the question above.

Tin-126 has a half life of 100,000 years. How many years does it take toreduce 100 g of Tin-126 to 12.5 g?
100,000 years
200,000 years
50,000 years
300,000 years

Answers

Answer:

300,000 years

Explanation:

100g=0 years

50g=100,00 years

25g=200,00 years

12.5g=300,000 years

300’000 yes I think she is correct

The process of converting a liquid to a gas is calledcondensation

evaporation

deposition

sublimation

Answers

Converting a liquid to a gas is evaporation.

Answer: evaporation

Explanation:

because liquid to gas is evaporation

Name the two common secondary structures that polypeptide sheets fold into.

Answers

I think it’s the alpha-helix and the beta-pleated sheet