The starting materials in a chemical reaction are called
2 answers:
<h2>Hello!</h2>
The answer is: The starting materials in a chemical reaction are called reactants... or can be called reagents too.
<h2>Why?</h2>The principal component in a chemical reaction are the reactants, after the reaction, we have the products and we could have reactants too (if they are not completed consumed).
For example, given the following reaction:
Reactants are: 2C2H6 and 7O2
Products are: 4CO2 and 6H2O
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We know 1 mole of any atom or molecules contains atom or molecules.
1 mole of HBr i.e 81 gm/mol contains atom or molecules.
So, mass of molecules is :
Therefore, mass of molecules is 1.21 gm .
Hence, this is the required solution.