Chemical

Radioactive decay

The calculator calculates how much radioactive material remains after a certain period of time.

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89003

Chemical

Calculator enthalpy

Enthalpy calculator is used to calculate the heat transfer during the process kwazistatycznego occurring in a closed thermodynamic system under constant pressure (isobaric process).

38018

Chemical

Dilution of solutions

Legend of given volume and calculates the concentrations of the solutions before and after dilution of the volume of solution added is calculated.

28416

Chemical

Molar concentration of mass and volume

Calculator allows to determine the molar concentration of the solution.

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146288

Life

Battery charging time calculator

Calculator to the data calculates the estimated time of charging.

89455

Math

Percentage calculator

This calculator allows you to calculate the percentage of the given numerical values.

65439

Math

Mean and covariance matrix calculator

Covariance is a measure of the covariance of two variables (X and Y). The calculator calculates the average for the sample and the covariance between variables. Sets of X and Y must be the same number.

237913

Information technology

Calculator download speeds

Calculator allows you to calculate the approximate download time on a given value for a circuit given parameters.

63734

Verifiers

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.