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The frequency of the relaxation based on the Arrhenius equation

Calculator based on the given temperature, the frequency of vibration and thermal activation energy calculated częsość relaxation.                    


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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).      
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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.              
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Molar concentration of mass and volume

Calculator allows to determine the molar concentration of the solution.            
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Circumference of an ellipse

The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.    
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Date calculator

Calculator allows you to calculate the date, which will be after a specified number of days, months and years from a certain date.
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Calculate the cost of electricity consumption device

The calculator is designed to calculate the cost of using the selected appliance. Only devices running without interruption.
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Associated ceiling material thickribs

Calculator allows you to calculate the approximate consumption of materials per 1 m2 rib ceiling with ceramic and concrete.