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ExtremeBDS [4]
2 years ago
7

Which of the following is a unit of heat? 1. Fahrenheit 2. Energy 3. Joule 4. Celsius

Chemistry
2 answers:
ELEN [110]2 years ago
6 0
The unit of heat is Joule
satela [25.4K]2 years ago
3 0

Answer : The correct option is, (3) Joule

Explanation :

S.I : It is known as the international System of Units. It is a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

As per question, the unit of is joule.

Fahrenheit and Celsius are the unit of temperature.

Hence, the unit of heat is, (3) Joule

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Answer:

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Explanation:

From the question given, we obtained the following information:

Molarity = 3M

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First, we need to find the number of mole of Na2SO4 present in 2L of the solution. This is achieved by doing the following:

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Mole = Molarity x Volume

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Next, we'll find the molar mass of Na2SO4, as illustrated below:

Molar Mass of Na2SO4 = (23x2)+32+(16x4) = 46 + 32 + 64 = 142g/mol

Recall:

Number of mole = Mass /Molar Mass

Mass = number of mole x molar Mass

Mass = 6 x 142 = 852g

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