With a calorimeter, you can measure reaction enthalpies or heat capacities using the final temperature (Tf) of the contents. But what if you know the reaction enthalpy of your reaction and the heat capacities of the materials you are using and you want to predict what Tf will be instead? Y...
Converting units can be difficult, so when doing so it is important to remember to write down your computations step by step and to label all units. Joules (J) and calories, the derivative units of kilojoules (kJ) and kilocalories (kcal), are both used to measure energy. Keep in mind ...
You're no doubt familiar with the termcalorieas one of the many ways to measure what the food you eat delivers to your system's cellular machinery. Some sources claim the calorie has units of energy; others say it takes units of heat. In fact, both assertions are true, as heat is one...
How do you convert 4 kilocalories to calories? Where do Celsius and Fahrenheit meet? How many sig figs is 0.0? How much heat in Joules must be removed to freeze 25 kg of water at 0 degrees C to produce 25 kg of ice? The formula for converting Celsius temperatures to Fahrenheit temperat...
How many kilocalories of energy are released? Calculate the energy required to heat 450 g of water from 20 to 57 degrees. Specific Heat Capacity of Water = 4.184 J/deg C \cdot g. Quote your answer in both kJ and kcal. How many kilojoules of heat are needed to melt 12.8 g of ice ...
Converting calories is actually a conversion of energy burned by the body performing work rather than actual weight. When measuring the energy content in foods, the large calorie, orkilocalorie, is used, but it's often still just called a "calorie." ...
Calorie content must be expressed as kilocalories per kilogram (kcal/kg) and kilocalories per familiar household measure (cup or cans) or unit of product (treats or pieces). Knowing how many calories are in dog or cat food helps pet parents understand how much to feed to maintain a ...
done in joules. This is scaled by the conversion factor to convert joules to kilocalories. The assumption made is that the body consumes four joules of chemical energy to do one joule of work, so an additional scaling factor of four is used to estimate the kilocalories expended by the ...
How to Calculate Methane Number. An engine's spark plug should ignite fuel, but additional fuel pockets sometimes combust, creating "knocking" in the engine. A fuel's methane number describes how likely it is to combust uncontrollably. Hydrogen receives
the words "kilocalories" and "calories" are used interchangeably when talking about diet and exercise. Technically, a kilocalorie (or Calorie) is 1,000 calories, but since a calorie is too small a measurement for nutrition purposes, the kilocalorie is used, but its name is shortened to "calo...