The number of calories needed to raise the temperature of 5.0g of water from 25C to 55C
To find the number of calories needed to raise the temperature of water, you can use the formula:
Q = m * c * ΔT
Where:
Q = heat energy (calories)
m = mass of water (grams)
c = specific heat capacity of water (calories/gram°C)
ΔT = change in temperature (°C)
First, let's find the mass of water:
m = 5.0g
The specific heat capacity of water is approximately 1 calorie/gram°C.
Now, let's calculate the change in temperature:
ΔT = final temperature - initial temperature
ΔT = 55°C - 25°C
ΔT = 30°C
Now that we have all the values, let's calculate the number of calories:
Q = 5.0g * 1 calorie/gram°C * 30°C
Q = 150 calories
Therefore, the number of calories needed to raise the temperature of 5.0g of water from 25°C to 55°C is 150 calories.
To calculate the number of calories needed to raise the temperature of water, we can use the formula:
Q = mcΔT
where:
Q is the quantity of heat energy required (in calories)
m is the mass of the substance (in grams)
c is the specific heat capacity of the substance
ΔT is the change in temperature (final temperature - initial temperature)
To solve the problem, we need to know the specific heat capacity of water. The specific heat capacity of water is approximately 1 calorie per gram per degree Celsius (1 cal/g°C).
Given:
m = 5.0g (mass of water)
ΔT = 55°C - 25°C = 30°C (change in temperature)
Now, let's substitute the values into the formula:
Q = (5.0g) * (1 cal/g°C) * (30°C)
Q = 150 calories
Therefore, the number of calories needed to raise the temperature of 5.0g of water from 25°C to 55°C is 150 calories.
q = [mass H2O x specific heat H2O x (Tfinal - Tinitial)
YOu know mass H2O, look up specific heat H2O in calories/grams*C, you know Tfinal and Tinitial. Substitute and solve for q in calories.