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irga5000 [103]
3 years ago
7

SHOW ALL WORK AND INCLUDE UNITS

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
3 0

Answer:

345J

Explanation:

-mass of iron (m) = 10.0 g

-temperature (ΔT) = final temperature- initial temperature= 100-25=  75 degree Celsius

-Specific Heat capacity of iron (c)= 0.46J/g°C.

Heat (Q)=?

Solution:

Formula for Heat is :

Q=m x c x ΔT

Q= 10 x 0.46 x 75

Q= 345 J.  

so, 345 joules of heat are needed to increase the temperature of 10 grams of iron.

From the above formula, all other questions can easily be solved from the same procedure.

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Which of the water samples described below has the greatest average kinetic energy per molecule? A. 1 liter of water at a temper
Triss [41]

Answer:

A. 1 liter of water at temperature 75°C

Explanation:

According to kinetic molecular theory average kinetic energy of molecules are directly proportional to absolute temperature.

the quantity of the sample does't depend on kinetic energy only temperature

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∵  1 liter water at  75°C has highest average kinetic energy per molecule

5 0
4 years ago
Phosgene is formed from carbon monoxide and chlorine. At 611 oC, Kc is approximately 16.5 M-1 or L/mol. Calculate Kp (in atm-1)
defon

Answer:

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We replace the data: Kp = 16.5 L/mol (0.082 . 884K)⁻¹ → 0.228/atm

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