Answer:
The enthalpy of the reaction of the reaction asked in the question is 265.2 kJ.
Explanation:
...(1)
..(2)
...(3)
(1)+(2)

...(4)
On reversing the equation (4)we get (3):


The enthalpy of the reaction of the reaction asked in the question is 265.2 kJ.
Answer:
<em>I disagree with the student's claim</em>
<em></em>
Explanation:
<em>From basic chemistry, the rate of chemical reaction increases with an increased surface area.</em>
<em>This simply means that a powdered substance will react faster than a small pellet of the same substance.</em>
Let us break this down further. The pellet has a smaller exposed surface per grain to the solvent, here is how. Imagine the powdered substance bunched up together to make the small pellet, grains at the center of the pellet is blocked by other grains around it, and will take time before it comes in contact with the solvent. For the powdered grains, each grain has a surface independently exposed to the solvent and can easily come in contact with the solvent, taking less time to react with the solvent.
Technically, a powdered substance has more exposed surface area and logically will take a shorter time for the reaction to be complete.
Mass of solute = 25.8 g
mass solution = 212 g
% =( mass of solute / mass solution ) x 100
% = ( 25.8 / 212 ) x 100
% = 0.122 x 100
= 12.2 %
They must have the same number of protons
The downward slope represents the relation between durability of titanium and temperature because with increase temperature, strength of titanium decreases.
<h3>Can titanium withstand temperatures?</h3>
Titanium alloys have high tensile strength to weight ratio, good toughness and an ability to bear extreme temperatures of more than 600 °Celsius. This shows that if temperature increase from more than 600 °Celsius, the strength of the titanium tends to decrease because it can not withstand to it so the graph comes to downward when the temperature exceeds to 600°C.
So we can conclude that the downward slope represents the relation between durability of titanium and temperature because with increase temperature, strength of titanium decreases.
Learn more about temperature here: brainly.com/question/4735135
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