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<u>A</u><u>)</u><u> </u><u>The moles of NaOH are equal to moles of HCl.</u>
Explanation:
NaOH + HCl ↦NaCl + H20
Answer:
The correct answer is 372852.9 g.
Explanation:
First, we must look for the relationship between the masses in grams and pounds.
To get an approximate result, the relationship between pounds and grams found is:
1 lbs = 453.592 g
Now we must use this relationship as a conversion factor in the following way:
8.22 lbs * = 372852.9 g
The mass expressed in grams for 8.22 lbs is 372852.9 g.
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Explanation:
It is known that the relation between heat energy, specific heat and change in temperature is as follows.
q =
where, q = heat released or absorbed
m = mass of substance
C = specific heat
= change in temperature
It is given that mass is 25.2 g and it is added to 150 ml container so total mass will be (25.2 g + 150 g) = 175.2 g, is
,
is
, and specific heat of water is 4.184
.
Hence, putting the given values into the above formula as follows.
q =
=
=
= -8430 J
As, 1 J = 0.001 kJ. Hence, -8430 J will also be equal to -8.43 kJ. The negative sign indicates that heat is being lost.
Thus, we can conclude that heat (kJ) was lost by the solution (surroundings) is 8.43 kJ.