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how many grams of water (is=4.184 J/g degrees celcius) will release 1367 J of heat when cooled to 45.2 degrees celcius to 36.2 degrees Celsius
С = 4.184 J/(g*C) delta T = 9 C for m = 1 and delta t=9 it is 4.184*9=37.656 j for m=x and delta t =9 it is 1367/37.656 =...
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A 35.0 g block of copper at 350.0 degrees celcius is added to a beaker containing 525 g of water at 35.0 degrees celcius. What is the final temperature of water?
Let us denote mc - mass of copper = 35 g cc - specific heat capacity of copper = 385 J/(kg*K) tc - temperature of copper = 350 C =...
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If a sample of gas occupies 6.8 liters at 327 degrees celcius what is the volume at 27 degrees celcius if the pressure does not change?
This question can be solved using the ideal gas law: PV = nRT P is pressure V is volume n is amount R is gas constant = 8.31 T is...
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Calculate the change in entropy when argon at 25 degree Celcius and 1.00 bar in a container of volume 0.500 dm^3 is compressed to 0.500 dm^3 and cooled to 25 degree Celcius.
Assuming ideal gas: delta_S = n * Cv * ln(Tf / Ti) + n * R * ln(Vf / Vi) argon molar heat capacity is 20.786 Jmiddot;molminus;1middot;Kminus; when argon at...
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Calculate the jouls of heat required the raise the temperature of 34g copper bowl from 20°c to 45°c.the specific heat is given as 0.385j/g °c
Jouls of heat required=42J
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Calculate the amount of heat released when one bottle (250g) of water is cooled from 30 degrees celcius to 25 degrees celciuis. The specific heat of water is (-4.186J/g degress celcius-).
Solution:To calculate the amount of heat entering or leaving a system, the equation Q = mcΔT is used.m = mass (in grams)c = specific heat capacity (J/g°C)ΔT = change in...
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Mercury freezes at -40oC. How many Joules of heat energy would you need to heat 2.0 g of Hg(l) from the freezing point to the boiling point (356.6oC)? The specific heat of mercury is 0.14 J/(g*oC).
Solution:Assume that there are no phase transitions (solid → liquid and liquid → gas) and mercury (Hg) remains liquid in the whole temperature range (from -40°C to 356.6°C).q = m...
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Calculate the energy (in kcal) involved when 15.9 grams of water goes from solid at -20.0 degrees celcius to liquid at 55.0 degrees celcius.
Q=mc∆TQ=15.9 x 4.186 x 75=4991.805 joul4,991805 kj
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112,300 joules heat is transferred when 240 g of a metal sample is cooled from 880 degrees celsius to 13 degrees celsius. What is the specific heat?
q = cmΔT => c = q / mΔT = 112300J / (240g x (880oC - 13oC)) = 0.54 J/goCAnswer: c = 0.54 J/goC
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The heat needed to vaporize a certain amount of liquid. A certain substance A has a boiling point of 78 degrees celcius and substance B has boiling point of 100 degrees celcius
A ‒ boiling point TB = 78 ⁰CB ‒ boiling point TB = 100 ⁰CLiquids are called condensed phases because their particles are packed in close proximity to one another....
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