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givi [52]
3 years ago
15

The change in its axis or orbit

Chemistry
1 answer:
saw5 [17]3 years ago
6 0
Axis I hope this helped answer orbit or axis
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Which of the followings are true about D-glucose and L-glucose? A. They are furanose B. They are stereoisomers C. They are enant
zaharov [31]

Answer:

B. They are stereoisomers

C. They are enantiomers

Explanation:

Let us consider all the options

A. D and L-glucose are not necessarily furanose, they can also be in free form (open chain) or as a six-membered ring (pyranose)

B. These sugars are stereoisomers as they have the same molecular formula, same bonds but with the different spacial arrangement.

C. Two structures are called enantiomers, if they are stereoisomers and are mirror images of each other and are not-superimposable. The given pair of structures satisfy these conditions

D. Epimers are diastereoisomers (same molecular formula and connectivity having a different spacial arrangement but are not mirror images and non-superimposable) with only one different stereocenter (if there are more than one). This is not the case

E. All monosaccharides (any sugar that cannot be hydrolysed to a simpler sugar) are reducing sugars. So, this option is invalid

4 0
3 years ago
How many different kinds of monomers are there in proteins?
zubka84 [21]
There are 20 different type of monomers present in proteins. Amino acids are in reality the monomers of proteins. Out of the 20 amino acids, only 9 are considered essential. The other 11 are of little use to the humans. The nine of the essential amino acids required by humans are Tryptophan, lysine, Histidine, Isoleucine, Valine, Threonine, Phenylalanine, Methionine and Leucine. The amino acids combine with one another to form different types of proteins. These proteins satisfy a number of our physical functional needs.



4 0
3 years ago
A compound a has the formula c8h10. after vigorous oxidation, it yields phthalic acid. draw the structure of
kumpel [21]
This is the structure of phthalic acid

3 0
4 years ago
Consider the equation for the formation of water.
Juli2301 [7.4K]

The theoretical yield is 160 g H₂O.

<em>Moles of H₂</em> = 18 g H₂ × (1 mol H₂/2.016 g H₂) = 8.93 mol H₂

<em>Moles of H₂O</em> = 8.93 mol H₂O × (2 mol H₂O/2 mol H₂) = 8.93 mol H₂O

<em>Theoretical yield</em> of H₂O = 8.93 mol H₂O × (18.02 g H₂O/1 mol H₂) = 160 g H₂O

6 0
4 years ago
what mass of carbon dioxide gas occupies a volume of 81.3 L at 204kPa and a temperature of 95 degrees celcius
pishuonlain [190]

The mass of carbon dioxide will be 238.51g

<u>Explanation:</u>

Given:

Volume, V = 81.3 L

Pressure, P = 204 kPa

                P = 204000Pa

Temperature, T = 95°C

                       T = 95 + 273K

                       T = 368K

mass of CO₂, m = ?

According to the gas law:

PV = nRT

where, R is the gas constant

n is the moles

and the value of R = 8.314 X 10³ L⋅Pa⋅K⁻¹⋅mol⁻¹

n = m/w

where,

m is the mass of the substance

w is the molecular weight

and molecular weight of CO₂ is 44 g

On substituting the value we get:

204000 X 81.3 = \frac{m}{44} X 8.314 X 10^3 X 368\\\\m = \frac{204 X 81.3 X 44}{8.314 X 368} \\\\m = 238.51 g

Therefore, the mass of carbon dioxide will be 238.51g

5 0
3 years ago
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