Can heat capacities be negative? - CHEMISTRY COMMUNITY
2021年2月6日 · In the scope of our class, heat capacity can't be negative because it is the amount of heat required to raise the temperature of a substance. You can't apply a negative amount of heat to something and cause a rise in temperature. There are some systems in space, like stars, that can have a negative heat capacity but it's because those bodies ...
specific heat capacity vs heat capacity - CHEMISTRY COMMUNITY
2023年3月19日 · Specific heat capacity is the heat required to raise the temperature of 1g of an object by 1*C, and since this is divided by the amount of substance present, it is an intensive property. You can determine which one to use based on what you are given in the question (ex: moles, grams, etc.)
Specific heat capacity as intensive property - CHEMISTRY …
2022年1月24日 · Specific heat capacity is an intensive property because it is not dependent on the amount of the substance available. Specific heat is the amount of energy it takes to raise 1g of a substance by 1 degree C, so no matter how much of the substance you have, you can still calculate how much energy it would need to absorb to reach a specific ...
Specific Heat Capacities degrees Celsius vs. Kelvin
2016年1月14日 · Postby Allison Maryoung 1D » Fri Jan 15, 2016 12:22 am. The specific heat capacity is the heat needed to raise the temperature of 1g of substance by 1 degree Celsius. 1 degree Celsius=1 degree Kelvin. When solving specific heat capacity in Kelvin, Kelvin=Celsius because the distance from one degree to the next degree in both Celsius and Kelvin ...
Specific heat capacity and molar heat capacity - CHEMISTRY …
2016年1月18日 · Specific heat capacity is the heat capacity of the molecule divided by the mass (in grams) of the molecule. Molar heat capacity is the heat capacity of the object divided by the moles of the molecule. A question can ask for either one of these or both. In Lavelle's example, we calculated the heat capacity of some ethanol to be 49 kJ/C.
The specific heat of octane, C8H18 (l), is 2.22 J/g-K. (a ... - Numerade
2022年10月21日 · The specific heat of octane is provided in 2.22 joules per gram degrees celsius, multiplied by its mass 80.0 grams, multiplied by the change in temperature, which will be the final temperature minus the initial temperature, and this gives us 2664 joules of energy.
Specific heat capacity water vapor = 2.01 J.°C-1.g Molar heat capacity water liquid = 75.29 J·K-1 ...
Specific Heat Sig Figs - CHEMISTRY COMMUNITY
2016年1月27日 · Re: Specific Heat Sig Figs. Postby Jonathan Shih 3H » Wed Jan 27, 2016 11:24 am. I think that although it is a pre-determined valued, these given values have probably been tested and calculated the many more sig figs, however, what we are given are usually the values rounded to a certain number of sig figs. Therefore, I do think that we have ...
Heat Capacity vs. Specific Heat Capacity - CHEMISTRY COMMUNITY
2018年1月13日 · Meanwhile, specific heat capacity is an intensive property because it does not matter the amount of substance present. For example in lecture, the heat capacity was 49 kj/c while the specific heat capacity is j/k × mol. The specific heat capacity is more useful in calculations because it is an intensive property.
Molar and Specific Heat Capacity - CHEMISTRY COMMUNITY
2023年3月18日 · You can use the molar mass of the substance in question to convert from specific heat to molar heat capacity or vice versa. For example, the specific heat capacity of water is 4.184 J/ (g*C). The molar heat capacity for water is 4.184 J/ (g*C) * (18.02 g/mol) = 75.3 J/ (mol*C). Similarly, if given the molar heat capacity, you can divide the ...