My Calculator Stack · Chemistry formulas
Chemistry formulas
One printable sheet for 4 Chemistry tools — formulas collected from each calculator’s How it works.
Atom Calculator (Neutrons)
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\[ N = A - Z \]
Neutrons = mass number − atomic number.
Atom Calculator (Protons)
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\[ Z = \text{number of protons} \]
Protons = atomic number.
Dilution Calculator
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\[ C_1V_1=C_2V_2 \]
Enter C1, V1, and C2 for the Dilution Calculator; use finite values in the indicated domain. The calculator reports V2: Dilution conserves moles of solute: C1 V1 = C2 V2. C1 and C2 must use matching concentration units, V1 and V2 share a volume unit, and C2 must be nonzero.
Mole Calculator
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\[ n = \frac{m}{M},\quad N = n\,N_A \]
moles = mass / molar mass; particles = moles × N_A.
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