CHEMISTRY HIGH SCHOOL

Which units express heat capacity

Answers

Answer 1
Answer:

Answer:

Heat capacity units: J/K

Explanation:

Heat capacity (C) is the amount of heat (Q) required to raise the temperature(T) of a substance by a unit degree.

C = (Q)/(T)

It is usually expressed in terms of J/K

Heat capacity is an intensive property i.e. it is not dependent on the amount of the substance. i.e, the amount of heat required to raise the temperature of 1 g of copper per kelvin would be the same as that corresponding to 100 g.
Answer 2
Answer: the heat capacity of a defined system is the amount of heat (usually expressed in calories, kilocalories, or joules) needed to raise the system's temperature by one degree (usually expressed in Celsius or Kelvin). It is expressed in units of thermal energy per degree temperature. To aid in the analysis of systems having certain specific dimensions, molar heat capacity and specific heat capacity can be used. To measure the heat capacity of a reaction, a calorimeter must be used. Bomb calorimeters are used for constant volume heat capacities, although a coffee-cup calorimeter is sufficient for a constant pressure heat capacity.

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Zn + 2HCl yields ZnCl2 + H2

Answers

It its definitely D.

What is the role of microbes in maintain temperature on earth? (Role of microbes in CO2 and CH4recycling)

Answers

Answer:

Explanation:

As the bacteria are capable of surviving in the hot temperatures as thermophiles they can speed up their respiration rate and hence, will produce more carbon dioxide and potentially accelerating the climate change within a region. The other prokaryotes can also become the significant contributors of the carbon output and these are those which are highly sensitive to the temperature. Methane oxidizing bacteria are also responsible for the contribution in carbon and nitrogen cycles. These bacteria converts the important greenhouse gas methane into carbon and nitrogen compounds like CO2 and NO2 − respectively. Thus methane can be considered as precursor of the temperature rise.

Cartilage is not flexible.
True
False

Answers

False. Cartilage is flexible as it serves its purpose in that way
Cartilage is a flexible connective tissue, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the intervertebral discs. It is not as hard and rigid as bone, but it is stiffer and less flexible than muscle.

Which type of bond is most likely to occur in the compound mgcl2?

Answers

An ionic bond because Magnesium is a metal and Chlorine is a nonmetal, because mg has a +2 charge and chlorine has a -1 charge then mg would hand out the electrons from its outermost orbital and hand them off to the 2 chlorine atoms.

What is the most common salt found in ocean water?

Answers

Hello.

The answer i believe would be sodium.

Have a great day.

How many moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 0.98 atm and a temperature of 373 K?

Answers

Answer:

There are 1, 13 moles of chlorine gas.

Explanation:

We apply the formula of the ideal gases, we clear n (number of moles); we use the ideal gas constant R = 0.082 l atm / K mol:

PV= nRT ---> n= PV/RT

n= 0,98 atm x 35,5 L /0,082 l atm / K mol x 373 K

n= 1,137448506 mol
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