Answer:
C a chemical reaction formed
Explanation:
if something changes smell and nothing else it is a chemical reaction, every other answer does not make sense
First, in order to calculate the specific heat capacity of the metal in help in identifying it, we must find the heat absorbed by the calorimeter using:
Energy = mass * specific heat capacity * change in temperature
Q = 250 * 1.035 * (11.08 - 10)
Q = 279.45 cal/g
Next, we use the same formula for the metal as the heat absorbed by the calorimeter is equal to the heal released by the metal.
-279.45 = 50 * c * (11.08 - 45) [minus sign added as energy released]
c = 0.165
The specific heat capacity of the metal is 0.165 cal/gC
Answer:
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Explanation:
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Answer:
2500 Calories IS REQUIRED TO HEAT 50 g OF WATER FROM 25 C TO 75 C
Explanation:
Specific heat of water = 1 cal/gC
Mass = 50 g
Temperature change = 75 C - 25 C = 50 C
How many calories are required to heat the 50 g of water?
Heat = mass * specific heat * temperature change
Heat = 50 * 1 * 50
Heat = 2500 Calories
In other words, 2500 calories is required to heat 50 g of water from 25 C to 75 C.
The information that is most useful to determine which will have a lower freezing point is the van't Hoff factor of each solute. It is the number of ions that is ionized when the solute are in solution. The higher this value, the lower is the freezing point of the solution given they have the same concentration.
