Question

The chemical reaction equation indicates directly the number of atoms or molecules taking
part in the reaction. Avogadro constant, NA, when expressed in the unit mol-1 and is called the
Avogadro number. The amount of substance, symbol n, of a system is a measure of the
number of specified elementary entities. An elementary entity may be an atom, a molecule, an
ion, an electron, any other particle or a specified group of particles. The mass of 1 mole of a
substance is equal to its relative atomic or molecular mass in grams. The atomic mass of an
element gives us the mass of one atom of that element in atomic mass units (u).

1 g hydrogen has​

Answer 1

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Error correction:-

Jennifer observes a weather map showing tomorrow's weather. She predicts that air will travel from the high pressure system to the low pressure system, causing wind. The wind will carry moisture since it is coming from the ocean..

Why?

Wind is the movement of air

It is due to the uneven heating of sun which causes pressure difference.

Wind can be specified by speed & direction.

Hot air rises up and cold air rushes in place of the bottom layer to cause wind movement.

Hence it flows from high pressure to low pressure area.

When the wind gets violent, it brings windstorm.

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