Explanation:
According to the heat relationship,
Heat given by steam = heat taken by water
Hence, 
= 
where, 
= specific heat
Value of 
at 250^{o}C and 12.5 atm is 2.326 
.
And, at 200^{o}C and 12.5 atm is 2.743 .
Therefore, average = 
= 2.5345 kJ/Kg^{o}C
As the given data is as follows.
= 400 kg/hr, 
= 
= 
, 
= 500 kg/hr
= 4.186 
Hence, putting the given values into the above formula as follows.
=
= 
As we know that, 
Thus, we can conclude that the new temperature of water is 
.
Q=m°C<span>ΔT
=(500g) x (1 cal/g.</span>°C) x (48°C-21°C) = 13500 cal
13500 cal / 1000 = 13.5 kcal
<span>"What is the caloric value (kcal/g) of the french fries?"
13.5 kcal/ 2.5 g = 5.4 kcal/g</span>
Answer: The amino acid that has a positively charged R group are LYSINE and ARGININE.
Explanation:
AMINO ACIDS are the basic structural units of proteins. Each amino acid contains an amino group ( -NH2) and a carboxyl group (-COOH) in its molecule. The carbon atom of amino acid to which the functional groups are attached is know as the alpha-carbon. In neutral solution, amino acids are mainly in the form of dipolar ions. Amino acids can be prepared through hydrolysis of protein by boiling with dilute hydrochloric acid.
Amino acids can be classified according to the chemical properties of its side chain (R group) at pH 7, these include:
--> Amino acids with POSITIVELY CHARGED R group
--> Amino acids with negatively charged R group
--> Amino acids with neutral polar R group
--> Amino acids with nonpolar aliphatic R group.
Amino acids with POSITIVELY CHARGED R group are those amino acids that has side chains which contain nitrogen and resemble ammonia, which is a base. Their pKa's are high enough that they tend to bind protons, gaining a positive charge in the process. Example include LYSINE and ARGININE.
