One mole of a substance contains _______ atoms or molecules.

Fill in the Blanks

One mole of a substance contains 6.023 x 10⁺²³ atoms or molecules.

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Base Quantities and Units

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Chapter 1: Measurement - Exercises [Page 9]

Chapter 1 Measurement
Exercises | Q II. 4. | Page 9

The intersection of two straight lines gives us _______.

Temperature is a measure of total kinetic energy of the particles in a system.

If one coulomb of charge is flowing in one minute, it is called ‘ampere’

Amount of substance gives the number of particles present in a substance.

Consider the statement given below and choose the correct option

Assertion: Electric current, amount of substance, luminous intensity are the fundamental physical quantities.

Reason: They are independent of each other.

What do you mean by luminous intensity?

What are the differences between plane angle and solid angle?

What is electric current?

Assertion: Radian is the angle subtended at the center of a circle by an arc whose length is equal to the radius of the circle.

Reason: 1 radian = `180/π`

How many base quantities are there?