If electricity comes from electrons, does morality come from morons?

Chemistry

2 answers:

Dmitrij [34]3 years ago

8 0

No morality come from each individual person.

Thepotemich [5.8K]3 years ago

7 0

I agree with coldisoncarle.

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A chemistry student weighs out 0.154 g of chloroacetic acid (HCH2CICO2) into a 250. mL volumetric flask and dilutes to the mark

erastovalidia [21]

Answer:

11.6 mL of 0.1400 M of NaOH is required to reach equivalence point.

Explanation:

Chloroacetic acid is an monoprotic acid.

Neutralization reaction: $ClCH_{2}COOH+NaOH\rightleftharpoons ClCH_{2}COONa+H_{2}O$

So, 1 mol of chloroacetic acid is neutralized by 1 mol of NaOH.

Molar mass of chloroacetic acid = 94.5 g/mol

So, 0.154 g of chloroacetic acid = $\frac{0.154}{94.5}$ moles of chloroacetic acid

= 0.00163 moles of chloroacetic acid

Lets assume V mL of 0.1400 M of NaOH is required to reach equivalence point.

So, number of moles of NaOH needed to reach equivalence point

= $\frac{0.1400\times V}{1000}$ moles

So, $\frac{0.1400\times V}{1000}=0.00163$

or, V = 11.6

Hence, 11.6 mL of 0.1400 M of NaOH is required to reach equivalence point.

7 0

4 years ago

What is restriction enzymes and what is it’s purpose?

Eddi Din [679]

Answer: <u>Endonuclease enzymes used in molecular biology that cut DNA at specified points.</u>

Explanation:

Enzymes are specific protein types which bind to a substrate within a reaction, to increase the rate of reaction within the solution- they speed up the rate of reaction.

Restriction enzymes are bacteria-derived enzymes; these make cuts on deoxyribonucleic acid molecules or DNA. These are also called restriction endonucleases. They are utilized in molecular biology for DNA cloning and sequencing and cut DNA into smaller pieces called fragments.

Restriction enzymes make directed cuts on DNA molecules. They precisely target sites on DNA to produce mostly identical or homogenous, discrete fragments of equal sizes, producing blunt or sticky ends. In order to do this, they recognize sequences of nucleotides that correspond with a complementary sequence on the endonuclease called restriction sites.

There are several kinds that may require cofactors (chemical or metallic compounds that aid in enzyme activity) :

Type I: cleave far away from the recognition site; require ATP and SAMe S-Adenosyl-L-Methionine

Type II: cleave near to the site; require Magnesium

Type III: cleave near to the site; require ATP which is not hydrolysed but SAMe S-Adenosyl-L-Methionine is optional

Type IV: cleavage targeted to DNA that have undergone post transcriptional modification through certain types of methylation (addition of a methyl group)