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What is the quantity of heat in joules needed to raise the temperature of 40.0g of Al from 25 degrees Celsius to 50 degrees Celsius?
Wiki User
∙ 11y ago
E = mass x specific heat x Δ°T
Δ°T = new temperature - original temperature
where Δ°T is equal to temperature change (Celsius in this case). The specific heat of Al is 0.900 J/g°C.
Before we proceed to find the quantity of heat in joules, we must first find the temperature change. To calculate the temperature change, we must subtract the original temperature from the new temperature.
Δ°T = 50°C - 25°C = 25°C
In order to find the quantity of heat (joules), we must multiply mass, specific heat, and the temperature change (calculated above).
E = 40.0g x 0.900 J/g°C x 25°C
= 900 Joules or 9.0 x 102 Joules
Wiki User
∙ 11y ago
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8.200 J
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False. Heat is measured in units of energy such as calories or joules, not in degrees Celsius. Temperature, on the other hand, is measured in degrees Celsius.
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The specific heat capacity of water is 4.18 Joules/gram degrees Celsius. Therefore, it would take 4.18 Joules of energy to raise the temperature of 1 gram of water by 1 degree Celsius.
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To raise the temperature of a substance, you need to calculate the heat energy using the specific heat capacity of the substance. Without knowing the specific heat capacity of the substance in question, it's not possible to determine the exact amount of energy required to raise the temperature from 30 to 45 degrees Celsius.
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Which could not be units for a vector quantity?
-- dollars -- weeks -- kilograms -- degrees (of temperature) -- pages -- watts -- decibels -- joules -- lumens
