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slamgirl [31]
4 years ago
11

The trend in electronegativity is F >Cl >Br; therefore, the most ionic compound (CH2F2) has the lowest boiling point, and

the most covalent compound (CH2Br2) has the highest boiling point. True or false?
Chemistry
1 answer:
bulgar [2K]4 years ago
5 0

Answer:

False

Explanation:

Increase in polarity of a molecule leads to higher boiling points. The more polar a molecule is, the higher the energy required to breaks intermolecular forces of attraction hence the higher the boiling point. This is the reason why ionic compounds and compounds having polar covalent bonds in them tend to have high boiling points.

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PLEASE HELP Will give brainliest and 50 points!! Please give honest answers
stiv31 [10]
Conduction electrons and positive metals ions
8 0
3 years ago
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Calnexin and calreticulin catalyze the removal of the final glucose residue from glycoproteins during the folding process. True
zloy xaker [14]

Answer:

Explanation:

A) False.

Glucosidase (not calnexin nor calreticulin) helps to remove glucose residue.

Both calnexin and calreticulin rather have an affinity for last glucose residue of misfolded protein (Only misfolded proteins are marked by glycosyltransferase by attaching glucose residue). They attach with misfolded protein and with the help of other proteins like ERp57 (a type of protein disulfide isomerase) and try to fold it properly. If protein is properly folded then glucosidase removes the glucose residue thereby releasing the properly folded protein from calnexin or calreticulin. and now protein is transported to the Golgi body. If folding is still not proper then the same cycle of glycosylation -binding of calnexin/calreticulin and effort to fold it properly is repeated.

B) True.

Transketolase is a key enzyme of the pentose phosphate pathway. It contains thiamine diphosphate (TPP) as a cofactor. it does transfer 2 carbon residue from a ketose to aldose. So, effectively it converts one ketose sugar to aldose with 2 carbonless and aldose to ketose with 2 carbon more.

C) True.

Theoretically, for the evolution of one molecule of oxygen, only 8 photons are required. But in practice, it is known that there are many variants like wavelength and the energy of the photon. The larger the wavelength, like the one which is used in PS1 (more than 700nM), the lesser the energy. Secondly, the energy of the photon is also wasted as heat energy. Because of these factors, more than 8 photons are needed in reality.

D) Wrong.

Fructose 2,6 bisphosphate is a key substrate and affects both the enzymes- phosphofructokinase and fructose bisphosphatase allosterically during gluconeogenesis. It strongly favors the breakdown of glucose during glycolysis by activating phosphofructokinase but it inhibits fructose bisphosphatase. Hence it activates the kinase enzyme while inhibiting the phosphatase and maintains a huge supply of glucose in the system.

E) Wrong.

The Calvin cycle shares similarity with the pentose phosphate pathway as both are involved in the synthesis of sugar (Triose and Ribose). However, it does not share similarity with enzymes of glycolysis (which is primarily focused on the breakdown of glucose) and gluconeogenesis.

8 0
4 years ago
What kind of information do unit conversions give?
Damm [24]
The answer is C because the unit conversions gave an equal amount but with other units
7 0
3 years ago
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A liquid has a low boiling point and is a poor conductor of electricity. The liquid could be which of the following? select all
Black_prince [1.1K]

The liquid which has a low boiling point and is a poor conductor of electricity is Methane (CH4).

<h3>What is covalent Compounds?</h3>

Covalent Compounds are compounds with low boiling point and are poor conductors of heat and electricity. Covalent compounds have strong intra-molecular bonds. This is because the atoms within the covalent molecules are very tightly held together.

Methane (CH4) is a liquid that has a low boiling point and is a poor conductor of electricity.

Read more on Covalent Compounds:

brainly.com/question/11651796

8 0
3 years ago
The center of the atom is known as the?
disa [49]

Answer:

nucleus

Explanation:

An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.

hope that helps!

7 0
3 years ago
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