Question

calculate the molecular mass of sodium carbonate Na2 co3​

Answer 1

Answer:

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Explanation:

Question:

Calculate the molecular mass of sodium carbonate.

Answer:

Since sodium carbonate contains two atoms sodium, one atom of carbon and three atoms of oxygen. The molecular weight would be

Na : 2 x 23.0 = 46

C : 1 x 12.0 = 12

O : 3 x 16 = 48

When we add up the total values, 46 + 12 + 48 = 106

${\therefore},the\:molar\: mass \:of$ $Na_{2}CO_{3}\: is \:106g/mole.$

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To calculate the molar mass of a compound, multiply the subscript of each element from the formula times the molar mass of the element. The molar mass of an element is its atomic weight (relative atomic mass) on the periodic table in g/mol.

Answer 2

$\huge\underline\mathfrak\red{Calculating \: molecular \: mass}$

Step 1. Make use of the chemical formula to determine the number of atoms of each element in the compound.

Step 2. Multiply the atomic weight of each element with its number of atoms present in the compound.

Step 3. Add up all and assign unit as grams/mole.

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What is the molar mass of sodium carbonate, Na2CO3 ?

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Since sodium carbonate contains two atoms sodium, one atom of carbon and three atoms of oxygen. The molecular weight would be

Na : 2 x 23.0 = 46

C : 1 x 12.0 = 12

O : 3 x 16 = 48

When we add up the total values i.e, 46 + 12 + 48 = 106

Therefore, the molar mass of Na2CO3 is 106 g/mole.

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