Dr. Helena Ortiz
Featured contributor PhD Applied Physics; former research associate at a national metrology lab.

Dr. Helena Ortiz

Senior Reviewer, Science & Engineering

0 calculators 0 articles Member since Jun 2026
Physics / Mechanics

Heat Conduction Calculator

Compute the steady-state rate of heat conduction through a flat wall or slab using Fourier's law of conduction: Q = k ·...

basic
19,474 4.0 1 min
Chemistry / Solutions

Molality Calculator

Compute molality (mol of solute per kg of solvent) from the mass of solute, its molar mass, and the mass of pure solvent...

basic
4,448 4.4 1 min

No articles published yet.

Reviewed by Dr. Helena Ortiz

These calculators were technically reviewed by Dr. Helena Ortiz for accuracy.

Physics / Electricity

Capacitance Calculator

Compute the capacitance of a parallel-plate capacitor from plate area, plate separation, and the dielectric constant.

basic
12,524 4.1 1 min
Chemistry / Solutions

pOH Calculator

Compute pOH from hydroxide ion concentration and the matching pH at 25 °C.

basic
18,221 4.2 1 min
Ecology / Carbon Footprint

Carbon Footprint Calculator

Estimate your annual personal CO₂e footprint from home energy, driving, flying, and diet — with adjustable emission fact...

Featured basic
15,826 4.9 1 min