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Scientific Calculator for ChemistsScientific Calculator for Chemists is Copyright © 19982001 Eni
Generalic Instructions
About this calculator
Scientific calculator for chemists with notebook is a fully functioning JavaScript calculator. This calculator can be used as common scientific calculator (sin, cos, log, power, root, memory), but it also includes a molecular weight calculator and the tables with various physical and chemical constants. The calculator contains a list with task history, storing all the recent inputs and results. Scientific calculator displays the numbers rounded to a userspecified number of decimal places. Entering calculationsType your expression directly onto the input line or copy and paste an expression from other programs. When you finish entering your expression, press ENTER or click [=] button. Rules for typing in calculations
Angle measurementsIn trigonometric calculations, angles are interpreted as degrees (default) or radians, depending on mode setting (Deg or Rad mode). Number formatsResults can be rounded to a userspecified number of decimal places (max 15digit). This calculator can also round the mantissa under scientific notation. For example, numbers are rounded to 4 decimal places like this: decimal number 3.5269, integer number 35269.0000 and scientific number 3.5269 e31. Arithmetic operatorsTo perform basic mathematical operations use the following arithmetic operators: addition (+), subtraction / minus sign (), multiplication (*) and division (/) Positive numbersEnter a positive number by pressing the appropriate digit keys (or buttons) and, if necessary, the decimal point key [.]. Full stops and commas can both be used as the decimal point in numbers (3,2 + 4.3 = 7.5). Negative numbersNegative numbers are obtained by simple putting the minus sign () before the number. Scientific notationUse standard calculator notation for scientific notation, for example 1e5 is 0.00001; 1e+3 or 1e3 is 1000. Enter the mantissa as the positive or negative number, and then click [E] button or just type lower e and type exponent as the positive or negative number. BracketsOperations with the same precedence are performed from left to right, with operations enclosed in brackets performed first. If brackets are nested, the operations enclosed in the innermost set of brackets are performed first. All types of brackets are correct, for example 25.3/(K3[Fe(CN)6]). Chemical formulae
Physical constants
Clicking the Constants button causes a physical constants table to pop
up. Examples
2+53.25 = 3.75 

