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Total dated and overnight shifts with paid or unpaid breaks, separate workweeks, decimal hours and optional estimated gross pay.

Compare renting and buying over your holding period with mortgage balance, recurring costs, sale fees and invested cash differences.

Resize an ingredient list by servings, pantry limits or measured pan capacity without hiding unit and density assumptions.

Compare debt snowball, avalanche and custom repayment with a fixed budget and dated extra payments.

Find the score needed on a final, solve weighted remaining work, compare scenarios, and apply a separate exam pass rule.

Correct a wet-gas measurement for water-vapor pressure, then calculate the dry component partial pressure from its mole fraction.

Calculate weak monoprotic acid pH from concentration and pKa with the quadratic equilibrium solution and dissociation percentage.

Generate five auditable pH points for a strong-acid/strong-base titration series, including the equivalence-point convention.

Calculate a defensible pH point for a strong-acid/strong-base titration curve and use the point to audit equivalence-volume planning.

Back-calculate the limiting reactant amount and mass needed for a target product amount from balanced coefficients and yield.