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Calculate the number of atoms in 46g of Na.
By BYJU'S Exam Prep
Updated on: September 25th, 2023
46g of Na contains 12.044 x 1023 atoms. Steps to Calculate the number of atoms in 46g of Na: We know that the Molar mass of Na = 23g,
Given mass = 46g
Number of moles = Number of atoms/ Avagadro Number (NA) = Given mass/ Molar mass
Number of atoms = Given mass x NA/ molar mass
Substituting the values we get:
= 46 x 6.022 x 1023/ 23
= 2 x 6.022 x 1023
= 12.044 x 1023 atoms
Table of content
Physical Properties of Sodium
- The metallic luster of sodium is very strong. The color is very similar to silver.
- At room temperature, it becomes soft enough to be pressed with a finger into a leaf shape.
- Sodium compounds change color more slowly in the air than potassium compounds.
- In the air, sodium reacts with oxygen to form sodium oxide, which combines with water vapor to form a film of sodium hydroxide.
Uses of Sodium
- Additionally, it is used to clean soaps, molten metals, and sodium vapor lamps, and improve the structure of some alloys.
- Sodium is a component of sodium chloride, an important substance in the environment that supports life.
- Both the formation of esters and the formation of organic molecules are sodium-dependent.
- Solid sodium carbonate is required for the manufacture of glass.
Summary:
Calculate the number of atoms in 46g of Na.
46g of Na contains 12.044 x 1023 atoms. Sodium is very strong and is a similar color to that silver. It becomes soft and changes color when exposed to air.