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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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Calculator enthalpy

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Molar concentration of mass and volume

Calculator allows to determine the molar concentration of the solution.            
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Radioactive decay

The calculator calculates how much radioactive material remains after a certain period of time.      
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The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.                    
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Coverage ratio of equity to assets

Calculator by entering the equity and total capital ratio is calculated profitability.          
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Number cheerful

Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.    
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Rainwater tank

The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description