Answer is: atomic masses.
For example, calculate molecular mass of one mole of ethanol (C₂H₅OH). Molecule of ethanol has two carbon atoms, six hydrogen atoms and one oxygen atom:
M(C₂H₅OH) = 2Ar(C) + 6Ar(H) + Ar(O) · g/mol.
M(C₂H₅OH) = 2·12 + 6·1 + 16 · g/mol.
M(C₂H₅OH) = 46 g/mol; molar mass.
Atomic mass is approximately equivalent to the number of protons and neutrons in the atom.
Answer:
For CO2 there is one atom of carbon and two atoms of oxygen.
Explanation:
<em>Transferases</em> - C) Catalyze the movement of a functional group from one molecule to another
<em>Isomerases</em> - D) Catalyze structural changes in a molecule
<em>Ligases</em> - B) Catalyze reactions involving the joining of two substrates
<em>Oxidoreductases</em> - A) Catalyze reduction reactions
Seems correct. Your steps make sense, the molar ratios are right and you've done it in a clear easy to follow manner. I see no issues with it.
Answer: two elements and three atoms
Explanation:
An element is the simplest substance and hence cannot be broken down using chemical reactions.
Magnesium chloride is an ionic compound formed by the transfer of electrons from element magnesium (Mg) to element chlorine (Cl) where Magmesium forms a cation by losing two electrons and chlorine forms an anion by gaining electron.
There are 3 atoms in Magnesium chloride which include one atom of magnesium (Mg) and two atoms of chlorine (Cl).