Answer:
The energy will be flowing from hot coffee to ice cube. The energy flow will stop when both temperatures of coffee and ice cube will become equal.
Explanation:
The second law of thermodynamics deals with the direction in which spontaneous processes go. Many processes run spontaneously in one direction, that is, they are irreversible under certain conditions. Although irreversibility is seen in everyday life, for example, a broken glass does not return to its original state, complete irreversibility is a statistical statement that cannot be seen during the life of the universe. More specifically, an irreversible process is a process that depends on the route. If the process can only go in one direction, the reverse path is fundamentally different and the process can't be reversible. For example, heat always involves the transfer of energy from a higher temperature to a lower temperature. A cold object that comes in contact with a hot object never cools, transfers heat to the hot object, and heats it up.
Answer:
Most people, including chemists, prefer to use these common names for the compounds mentioned because they are frequently found, and the common names are shorter, easier to pronounce, and more widely known.
Answer:
Object: To demonstrate phototropism
equipments: A black box, window with light source, a well watered potted plant.
Experiment: A wellwatered potted plant is placed inside a darkened black box that is having a small window on one side. This is called as phototropic chamber. Window is remain closed for a day the plant shows normal growth.
Whereas if window is opened atwo days it will be found that shoot tip bends and grows towards light proving that it is positively phototropic.
Answer:
Explanation:
The first thing we need to know is that the amino acid of tyrosine has an aromatic ring within its structure.
Also, recall that aromatics hydrocarbons are considered to be unsaturated and non-polar.
So, since like dissolve like. Then, The non-polar character of tyrosine is enhanced by its aromatic ring. As a result, Tyrosine amino acid is much more soluble in less polar solvents like methanol and ethanol than in moderate highly polar water.
From the given information:
Since water is a very polar solvent, and tyrosine amino acid is not particularly polar, it is just barely soluble in it.
In addition to the aforementioned, peptides are strongly polar in nature. However, as the amount of tyrosine amino acids in a peptide increases, the region of the non-polar portion of the peptide increases (owing to the rise of the aromatic ring), and thus the non-polar value of the peptide will also rise. And this non-polar nature of peptide will make them more soluble in non-polar solvent and decrease its solubility in water (because water is polar in nature). And since peptides are non-polar, they would be more soluble in non-polar solvents and have less solubility in water.
Answer:
A. A cube that measures one cm3 on each side
Explanation:
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