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3 years ago

Match each SI unit to the quantity it measures mass temperature time electric current

Chemistry

1 answer:

kherson [118]3 years ago

5 0

The S.I unit for the given term:

Mass is expressed in kilogram (kg)

temperature is expressed in kelvin (K)

Time is expressed in seconds (s)

Current is expressed in ampere (A)

Explanation:

Current:

The current can be defined as the electric charge flow in the surface (means ratio of charge per unit time). It is measured in ampere (A)

$Current\ I=\frac{\text { charge }}{\text { time }}$

Temperature: 

Kelvin (K), the general temperature unit in the international standard units system. The Kelvin scale is an absolute thermodynamic temperature scale that uses absolute zero, a temperature at which all thermal movements end with a classic description of thermodynamics.

Mass: 

Mass is both a feature of the objects weight and its resistance measurement to accelerate under the influence of pure force. The mass of the object also determines the gravitational force. The basic unit of mass is kilogram (kg)

Time: 

Time is the measurement of how much distance the objects takes to travel from one to another (speed). It is expressed in seconds (s).

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Answer:1.

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3 years ago

A vehicle travels at the same speed from point A to point B then from point B to point A

Ber [7]

Answer:

The speed is positive either direction.

Explanation:

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Hence, the correct option is (D)

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3 years ago

Any process with a negative change in enthalpy and a positive change in entropy will be:_______.

harkovskaia [24]

Answer:

a. spontaneous

Explanation:

Hello,

In this case, since the Gibbs free energy is a metric that allows us to know whether a chemical reaction is spontaneous (Gibbs free energy less than 0) or nonspontaneous (Gibbs free energy greater than 0) we can mathematically define it as:

$\Delta G=\Delta H-T\Delta S$

Thus, if the enthalpy is negative and the entropy is negative, the subtraction become always negative, for which the Gibbs free energy is negative as well, therefore, based on the aforementioned, any process with a negative change in enthalpy and a positive change in entropy will be: a. spontaneous.

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3 years ago

If a solute has really strong bonds between its particles, would you expect it to form a solution that gets hold or cold? Explai

Kobotan [32]

Answer:

The temperature of the solute/solvent without any external effect would decrease.

Explanation:

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In order to achieve this, there will be a lot of energy required and that is through the heating process. So the solution will require energy so the solute will dissolve fully either by provision of external force i.e stirring or by heating.

Explanation:

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2 years ago

Which common characteristics makes both batteries and fuel cells practical to use?

maks197457 [2]

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3 years ago

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