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Calorimetry calculations
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Sarwat.
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#1
How would I answer this question this is all I’ve done so far.
The answer for q2 is -57kjmol-1
And the answer for q3 is -525kjmol-1.
I don’t understand how they’ve gotten this can someone please explain what I’ve done wrong/need to do.![Name: image.jpg
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The answer for q2 is -57kjmol-1
And the answer for q3 is -525kjmol-1.
I don’t understand how they’ve gotten this can someone please explain what I’ve done wrong/need to do.
Last edited by Sarwat.; 3 months ago
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BlueChicken
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#2
(Original post by Sarwat.)
How would I answer this question this is all I’ve done so far.
The answer for q2 is -57kjmol-1
And the answer for q3 is -525kjmol-1.
I don’t understand how they’ve gotten this can someone please explain what I’ve done wrong/need to do.![Name: image.jpg
Views: 21
Size: 152.7 KB]()
How would I answer this question this is all I’ve done so far.
The answer for q2 is -57kjmol-1
And the answer for q3 is -525kjmol-1.
I don’t understand how they’ve gotten this can someone please explain what I’ve done wrong/need to do.
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Sarwat.
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#3
(Original post by BlueChicken)
So, for the first question, your answer is 0.057. Note, this is the actual answer of 57 divided by 1000 - so where do you think the extra factor of 1000 is coming from in your calculation?
So, for the first question, your answer is 0.057. Note, this is the actual answer of 57 divided by 1000 - so where do you think the extra factor of 1000 is coming from in your calculation?
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BlueChicken
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#4
(Original post by Sarwat.)
Converting it from j to Kj right because enthalpy change is measured in kj
Converting it from j to Kj right because enthalpy change is measured in kj
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Turning_A_Corner
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#5
Make sure you know which is the limiting reagent as well. Write out the equation and do a molar calculation before you do anything else.
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Sarwat.
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#6
(Original post by BlueChicken)
That is a true statement and does need to be done. However, are you sure your units are correct in q = mcT?
That is a true statement and does need to be done. However, are you sure your units are correct in q = mcT?
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Sarwat.
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#7
(Original post by Turning_A_Corner)
Make sure you know which is the limiting reagent as well. Write out the equation and do a molar calculation before you do anything else.
Make sure you know which is the limiting reagent as well. Write out the equation and do a molar calculation before you do anything else.
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#8
(Original post by Sarwat.)
ohhh ok I get it now so you divide the enthalpy change by the limiting reagent?
ohhh ok I get it now so you divide the enthalpy change by the limiting reagent?
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BlueChicken
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#9
(Original post by Sarwat.)
yes? I think so..?
yes? I think so..?
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