Calculate the concentration of a solution containing 1.8g of sodium carbonate in 862cm3 of water

0.02 M

Explanation:

Given data:

Mass of sodium carbonate = 1.8 g

Volume of water = 862 cm³ (862/1000 = 0.862 L)

Concentration = ?

Solution:

Formula:

Concentration  = number of moles / volume in L

Number of moles of sodium carbonate:

Number of moles = mass/molar mass

Number of moles = 1.8 g/ 106 g/mol

Number of moles = 0.02 mol

Concentration:

c = 0.02 mol / 0.862 L

c = 0.02 M

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.