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Makovka662 [10]
3 years ago
7

How many joules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22C to 234C? The specifi

c heat of aluminum in this temperature range is 0.96 J/g•C. Show your work Q = mc(Tf-Ti)
Chemistry
1 answer:
NemiM [27]3 years ago
6 0
The given formula for heat, Q=mc(Tf-Ti), is the best way to solve such problems with changes in temperature. It can be said that m is the mass of the substance. C is the specific heat of the substance. The term (Tf-Ti) is the change in temperature.

Q = mc(Tf-Ti) = 480g(0.96 J/g-C)(234-22) = 97689.6 Joules of heat
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The ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. in t
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The complete balanced chemical equation is: 
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In statement form: 4mol NH3 reacts with 5 mol O2 to produce 6 mol H2O 

First let us find for the limiting reactant: 
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From the balanced equation: 
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moles H2O formed =  1.69 mol O2  * 6/5 = 2.025 mol
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3 years ago
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Answer: The reaction produces 2.93 g H₂.

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3 years ago
How many joules are needed to change the temperate of 22g of water from 18°C to 33°C?
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Answer:

Q =  1379.4 J

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Formula:

Q = m.c. ΔT

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