__________ refers to the total energy of a system.

2 answers:

8 0

The internal energy r<span>efers to the total energy of a system. The enrgies are kinetic energy and potential energy of the system that makes up the whole energies of the system.</span>

omeli [17]3 years ago

6 0

Enthalpy refers to the total energy of a system. Enthalpy is basically a thermodynamic unit of measurement that determines the total heat content of a system. This means that all energy is included in the measurement - the energy used to make the system, the energy of the system, and the energy it uses to keep the environment separate from the system.

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Zn(s)+2HCl(aq)= Zncl2(aq)+H2(g)

algol13

<span>There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. We calculate as follows:
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4 years ago

18. Describe the relationship between kinetic energy and mass, and give an example of

lidiya [134]

Answer:

Kinetic energy is directly proportional to mass

Explanation:

Kinetic energy is directly proportional to the mass of an object and also directly proportional to the square of the velocity of that object:

$E_k = \frac{1}{2} mv^2$

Notice that if we keep velocity constant and only increase the mass of a object, the kinetic energy of that object would increase, as we've already emphasized the direct relationship between the kinetic energy term and the mass term.

Let's take a simple example: assume that object 1 and object 2 are both moving at the same velocity but object 1 has a much lower mass than object 2. According to the equation, object 1 has lower kinetic energy. This object can then transform all of its kinetic energy into some other form, say, heat the ground. The heat transferred will be significantly lower than by the object 2 moving at the same velocity but having a much greater mass.

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