Q=m⋅c⋅ΔT
where:
�
m is the mass of the substance (in grams),
�
c is the specific heat capacity of the substance (in cal/°C·g),
Δ
�
ΔT is the change in temperature (in °C).
In this case, for iron:
�
=
33.1
m=33.1 grams,
�
=
0.108
c=0.108 cal/°C·g,
Δ
�
=
48
−
17
=
31
ΔT=48−17=31 °C.
Now, plug these values into the formula:
�
=
33.1
g
⋅
0.108
cal/°C
\cdotp
g
⋅
31
°C
Q=33.1g⋅0.108cal/°C\cdotpg⋅31°C
To melt 10 grams of ice at 0 degrees Celsius, it would require 80 calories of heat energy per gram, so a total of 800 calories (80 calories/gram * 10 grams = 800 calories) would be needed.
The specific heat capacity of water is approximately 4.18 Joules per gram per degree Celsius. To raise the temperature of one kilogram (1000 grams) of water by one degree Celsius, it would require approximately 4180 Joules of heat energy.
To increase the temperature of 1 gram of water by 1 degree Celsius, it requires 1 calorie of energy. Therefore, to increase the temperature of 50 grams of water by 1 degree Celsius, it would require 50 calories of energy.
It takes 1 kcal to raise the temperature of 1 kg of water by 1 degree C. To do this accurately, you need the temperature of the water to determine its density, but for the sake of simplicity, we'll use its value at 4oC, which is 1 g/ml 373 ml is equal to 373g or 0.373kg. Therefore, for that volume of water it should take 0.373 kcal per degree C., so 0.373 x 30 = 11.19 kcal, or 11,190 cal
To calculate the total number of calories of heat needed, you can use the formula: Q = m * c * ΔT, where Q is the heat energy in calories, m is the mass of the water, c is the specific heat capacity of water (1 calorie/gram °C), and ΔT is the change in temperature. Assuming you have 100 grams of water, the calculation would be: Q = 100g * 1 cal/g°C * 10°C = 1000 calories.
To melt 10 grams of ice at 0 degrees Celsius, it would require 80 calories of heat energy per gram, so a total of 800 calories (80 calories/gram * 10 grams = 800 calories) would be needed.
Here's a hint: You need to know the 'specific heat capacity' of ice to be able to answer that question. Try googling for it, or maybe try wikipedia.
(5)(3)= 15 calories. 1 calorie is the energy (heat) to raise 1 gram of water by 1 degree celsius, so 5 grams of water (3 degrees Celsius) = 15.
Heat required = (mass) x (specific heat of substance) x (temp difference) In this case it would be (100) x (1) x (50-20) = 100 x 30 = 3000 cals
100 calories. 1 calorie is defined as the amount of energy required to raise the temperature of 1 gram of 1 by 1 degree Celsius. So, if you need to raise 10 grams of water 1 degree, you would need 10 calories of energy. If you needed to raise those same 10 gram by 10 degrees, you'll need 10 * 10, or 100 calories.
The answer is 2 calories.
To convert calories into grams, you need to know the specific nutrient density of the food you are calculating. Typically, you can use the general conversion that 1 gram of carbohydrates or protein is equivalent to 4 calories, and 1 gram of fat is equivalent to 9 calories. By dividing the number of calories by the conversion factor, you can get an estimate of the grams of macronutrients in the food.
The needed heat is:Q = 10 x 20 x 0,031 = 6,2 calories
The number of grams in 1000 calories depends on the macronutrient composition of the food. For example, carbohydrates and proteins provide about 4 calories per gram, while fats provide about 9 calories per gram. Therefore, 1000 calories would equal approximately 250 grams of carbohydrates or protein, and about 111 grams of fat. The exact amount varies based on the specific food and its nutritional makeup.
Grams of what?
Typically calorimeters combust 1 gram of material and are designed for a specific heat rise of x calories per degree Centigrade rise. With the information given this is unknown. How many grams of water were heated? how much peanut butter was actually combusted? With the given information and assumptions of a standard calorimeter (1000 calories per degree rise), [880 grams water, plus the 120 calorie/ degree heat capacity], I can only estimate that a 1 gram sample giving a 3.2 degree rise, gave off 3200 calories to the calorimeter. this is the equivalent of 3.2 "food calories" per gram. [Kcal]. Thus a 16 gram spoonful would contain 51.2 Kcal.
The serving size for a pack of minstrels is 42 grams. It contains 209 calories and 9.4 grams of fat. One to two hours of cardio-exercise per day in needed.