# Description

The Molecular Calculator is designed to calculate the molecular and reciprocal weight of any chemical formula.

usage:

* Enter a chemical formula the standard way.

* Symbols can be seperated by blanks.

* Simplified structures are also allowed.

* Formulas cointaining a multiplication (such as hydrates) should be entered without the dot.

* Numbers composed by an integer and a fraction (like 1 1/2) should be replaced by a fraction (3/2) or using decimal notation (1.5).

* The chemical formulas are case sensetive.

Examples:

* H2O

* Ns2SO4

* Fe3[Fe(CN)6]2

* HOOC-CH2-C(OH)(COOH)-CH2-COOH

* H3C-(CH2)7-CH

Internet permission is for adds.

Questions or bug reports? please contact me at malta.dan@gmail.com.

For more applications,check out my public profile at http://profiles.google.com/malta.dan/about.

ENJOY

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# Additional information

Updated

January 8, 2012

Size

309k

Installs

1,000 - 5,000

Current Version

1.1

Requires Android

2.2 and up

Content Rating

Everyone

Permissions

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Flag as inappropriate Offered By

Dan Malta

Developer

# Similar

## Chemical Solutions

Amayuki

1

Are you working with chemical solutions? A simple and intuitive application to calculate volumes of solutions and molarity. Try it free!

- Is installed by default on SD memory

- With button to clear the screen.

- Added the option to select between liters and ml for units of the initial volume.

- Added tab to the electronic configuration of the elements.

- Is installed by default on SD memory

- With button to clear the screen.

- Added the option to select between liters and ml for units of the initial volume.

- Added tab to the electronic configuration of the elements.

## MATLAB Mobile

Note: To use MATLAB Mobile, you will need a MATLAB license that is current on MathWorks Software Maintenance Service.

Connect to MATLAB remotely from your Android smartphone or tablet.

MATLAB Mobile™ is a lightweight desktop on your Android device that connects to a MATLAB session running on MathWorks Cloud or on your computer. From the convenience of your Android device, you can run scripts, create figures, and view results.

Features

* Command-line access to MATLAB

* Access to MATLAB workspace

* Ability to view MATLAB figures on your Android device

* Record of commands typed on the device in your command history

* MathWorks Cloud connectivity and storage

* Windows, Mac, and Linux connectivity

* Acquire data from device sensors

Limitations

MATLAB Mobile does not support:

* MATLAB apps such as Curve Fitting or Signal Analysis

* Creating graphical interfaces using GUIDE

* MATLAB Editor

* Simulink graphical environment, but the 'sim' command is supported at the MATLAB Mobile command line

* Interaction with 3D figures

About MATLAB

MATLAB is the leading technical computing software for algorithm development, data visualization, data analysis, and numeric computation. MATLAB is used in a wide range of applications, including signal and image processing, communications, control design, test and measurement, financial modeling and analysis, and computational biology.

Requirements

1. One of the following MATLAB licenses:

* Professional or academic license for R2012a or later with an up-to-date MathWorks Software Maintenance Service contract.

* MATLAB Student or MATLAB and Simulink Student Suite R2014a or later.

* MATLAB and Simulink Student Version R2012a or later.

* MATLAB Home.

2. MATLAB Connector installed on the same computer as MATLAB. Starting with R2013a, the MATLAB Connector will be installed with MATLAB. For R2012a and R2012b, download MATLAB Connector at http://www.mathworks.com/mobile/.

3. Android 4.0 or later

MATLAB Mobile and the MATLAB Connector are intended for use behind a firewall on a private network. Virtual Private Network (VPN) use is recommended when used over the public Internet or via 3G or 4G.

## Scientific Calculator Plus

CYZ SOFT

1

Scientific Calculator Plus is a powerful mathematical tool to do mathematical analysis and evaluate complicated mathematical expressions similar to Matlab. More than Matlab, it has capability to take photo of printed math expressions and recognize them to do further analysis. It supports complex number, matrix, (higher level) integration, 2D, polar and 3D chart, string, programming (using a easy-to-use language called MFP), file operation and unit conversion. It can run in both Android phones and tablets, PC or MAC with JAVA ready (Scientific Calculator for JAVA does not support math recognition).

Main capabilities:

1. Math recognition: User enter into Smart Calculator and then click the camera button to take photo of one or more than one printed math expressions to recognize. User is able to choose to calculate or plot graph or simply use the recognized text as input. Comparing to Photomath, Scientific Calculator Plus is a bit slower at recognition speed. However, it supports a lot more expressions types than Photomath. And it is able to plot chart of expressions.

Scientific Calculator Plus supports the following expressions: 1. Addition; 2. Subtraction; 3. Multiplication; 4. Division; 5. Fractions; 6. Roots; 7. Multiple linear expressions; 8. Trigonometry; 9. Polynomials; 10. Exponents; 11. Algebra; 12. Integration; 13. Summation; 14. Product; 15. Matrix and 16. Complex value. User can also send email to us if the recognized result is not satisfactory.

2. Back-end math engine: Scientific Calculator Plus supports complex number, matrix, integration and is able to solve multi-variable linear equations, polynomials (up to 6 order) and other simple functions.

Example to input matrix: [[1,2],[3,4]], where [1,2] and [3,4] are 2 rows in the 2*2 matrix.

Example to input complex number: 8.71 - 5.44i where i is the image unit, the times operator, which is *, between 5.44 and i can be ignored. If ignored, no space is allowed between 5.44 and i;

Example to input integral: integrate("x**2", "x", 0, 1) (definite integral of x square from x = 0 to 1) or integrate("x**2","x") (indefinte integral of x square).

3. Graph engine: This app is able to plot 2D, plor or 3D chart. In smart calculator, user inputs the expressions and Scientific Calculator Plus automatically identifies the number of variables (2 variables means 2D chart or polar chart, depending on variable name; 3 variables results in 3D chart) in the expressions and draws corresponding graph. Scientfic Calculator Plus also provides stand alone tools to draw complicated graphs and a set of functions to draw charts from command line.

4. Programming: This app is actually a shell of programming language called MFP. This language internally supports string, complex number and matrix and is able to call all the built-in functions and all the user-defined libs stored in AnMath/scripts folder in SD card. This programming language also provides a complete set of file operation functions and time / date functions. Theoretically, user can do anything using this programming tool in an Android device.

Main components:

1. Smart calculator: User can take photo to recognize math (printed only), do any calculation or plot graphs using this tool. An internal calculator assistant can convert units and return constant values. Its input pad is configurable. User can add his/her own function buttons.

2. Command line: A matlab like tool for advanced users. User inputs functions line by line and run. Its key board is also configurable.

3. Integration and plotting graphs: Tools calculate complicated integrals and plot various graphs.

4. Scientific Calculator for JAVA: It is included in Scientific Calculator Plus for Android. User is able to connect the mobile device to any PC or MAC via a USB cable, copy SDcard\AnMath\ folder to his/her own directory and launch the JMathCmd.jar in it. Note that SCP for JAVA is not able to recognize math expressions.

## Graphing Calculator

I believe every student in the world should have free access to graphing calculator and learn the amazing math and science to the next level.

Thanks for your support, Graphing Calculator recently got 1M+ downloads.

A Simple Graphing Calculator

- Added Basic Calculator

- Added Scientific Calculator

- Added Graphing Calculator

- Pinch Zoom for Graphing Calculator

- Take Screenshot of Graph

- Added Tablet Screen Size Support

- Improved User Interaction for Graphing Calculator

- Scientific Notation

- Radian vs Degree

- InApp purchase to remove ads banner

- copy and paste using clipboard

- Added Calculator for Android Wear

Please press Shift on the top left corner, if you don't find the operation key.

- buttons like ln, sqrt, log, 1/x, sinh, sinh-1, cosh, cosh-1, tanh, tanh-1

- abs means absolute value |x|

## MatCalc - Matrix Calculator

kc

1

MatCalc is an open source and free matrix calculator. It is powerful and easy-to-use, ideal for high school and undergraduate maths or engineering students. It features 18 matrix operations from finding inverses, calculating norms to solving linear system of equations.

Although this app is in BETA, everything should work as intended. Please let me know if you find any bugs.

Source code is available on GitHub. https://github.com/cong89/matcalc

## Sensor Ex

TarCo

1

Sensor Ex - Logs data directly to your PC via WiFi for real-time remote data acquisition or plots phone sensors and saves them for extended analyses later on.

It allows the use of your phone as sensors module for on any mobile object connected to your PC. Therefore, enabling you to perform further complicated tasks on your mobile application.

Sensor Ex main aim is to feedback android's sensor remotely to any computer e.g. mobile robotics.

It provides better features and flexibility for amateurs and professionals to implement more complex ideas on their robots by minimizing project budget and using just android's accelerometer, orientation, camera and audio.

Sensor Ex supplies a Visual Basic control component that can be used in your VB project or demo PC application that streams live data.

Download and install the client from the website. Check the website for PC client updates.

Don't forget to set the device number in the preferences to match the PC client.

If you are having trouble connecting to your PC through you router or if streaming is too slow try to establish a direct Ad-Hoc network using one of many software on the net.

- Stream sensors, camera and 2 ways audio (with specified time interval)

- Create simulink models and GUI using Sensor Ex Matlab Library

- Autosave sensors values in real-time (as .csv or .tdat)

- Support up to 5 devices

- Sync graphs colors between android and PC

- Send saved graphs directly to PC client

- Toggle phone's flash light

- Record video and audio to file

- Disable camera tab for drastic performance improvement

Almost everything is documented and clear. For any questions don't hesitate to contact me.

Coming up next!

- Web streaming

Feel free to leave a comment or suggestion :)

# More from developer

## Periodic Table of the Elemets

Periodic Table of The Elements (Free with no adds)

* 106 elements catagorized according to the following characteristics:

- solid / liquid / gas

- synthetically created

- non metals / alkali metals / alkali earth metals / transition metals / metalloids / halogens / noble gases / rear earth metals.

* tap each of the elements to view 22 of its basic properites:

- symbol

- atomic number

- mass number

- atomic mass

- density

- oxidation states

- electron configuration

- state

- melting point

- boilong opint

- deltaH vaporization

- delta H fusion

- specific heat

- crystal

- atomic volume

- atomic radius

- covalent radius

- thermal conductivity

- electrical conductivity

- ionization potential

- electronegativity

- oxide type

* zoomable screen.

* no permissions required.

* great for students.

Questions or bug reports? please contact me at malta.dan@gmail.com.

For more applications, check out my public profile at http://profiles.google.com/malta.dan/about.

ENJOY

## Aeronautical Calculator

Calculate non standard atmospheric characteristics (according to the 1976 International Standard Atmosphere model), convert various altitude and airspeed types with regard to sea level atmospheric conditions.

Correct up to geometric altitude of 84 kilometers.

Correct up to geometric altitude of 84 kilometers.

Usage:

1) Enter mean sea level characteristics (temperature, pressure).

2) Enter chosen altitude (geometric or geopotential) or gravity, press 'done' and view atmospheric properties at

chosen altitude \ gravity.

3) Enter chosen airspeed (true or calibrated or equivalent; up to the local value of the speed of sound) or dynamic

pressure or mach number (up to mach one), press 'done' and view airspeed type converted at current altitude and

mean sea level characteristics.

Notice:

1) Long click each variable label to get information regarding that variable.

2) Use right side spinners to change input / output unit types.

Remarks:

1) Airspeed conversion is performed under assumption that air is compressible, isentropic (subsonic; mach

number < 1.0) and dry with a constant specific heat ratio.

2) If at current atmospheric conditions, input airspeed results in mach number greater then 1 - calculation is

performed according to mach number 1.

3) Density is calculated using a perfect gas relationship.

4) Geopotential altitude input is defined according to standard day (ISA).

5) The mean molecular weight is not corrected for geometric altitude above 80km.

Questions or bug reports? please contact me at malta.dan@gmail.com.

## Geodetics Calculator

The Geodetics Calculator is designed to solve the first ("direct") and second ("inverse") geodetic problems with an accuracy of 1e-6 meters over a range of 27 different reference ellipsoids and spheriods.

Background:

The first ("direct") geodetic problem is defined in the following manner: given a point (in terms of latitude and longitude) and a direction ("azimuth") and distance from that point to a second point, determine the location (in terms of latitude and longitude) of the second point.

The second ("inverse") problem is defined in the following manner: given two points (in terms of latitude and longitude), determine the direction ("azimuth") and length of a line (in our case, both a geodesic curve (a great circle) and a rhumb line) that connects them.

Usage:

*To solve the first ("direct") geodetic problem, simply enter the origin point, fill direction and azimuth fields and press the Calculate button.

*To solve the second ("inverse") geodetic problem, simply enter the origin and destination points and press the Calculate button.

*In order to change the units in which the input or output fields are given, simply choose a different measurment unit and press the Calculate button.

Terminology:

*Geoid Altitude output field rtepresents the height of the local geoid (EGM96 = Earth Gravity Model 1996) above mean sea level at the origin and destination.

*Forward output field represents the azimuth from origin point to destination point.

*Backward output field represents the azimuth from destination point to origin point.

*Direct output field represents the length of a straight line ("geodesic curve" / "great circle") connecting the origin and destination point, along the reference ellipsoid.

*Rhumb output field represents the length of a rhumb line connecting the origin point to the destination point, along the "meridional earth spheroid model" (radius of 6367.445[km]).

*Latitude and Longitude output fields represent the location of the point located at a given azimuth and distance from the origin point (they are given in degrees with a decimal notation).

Notes:

*Origin and Destination points location can be entered in two different notations:

> degrees decimal notation: choosing "decimal" would require the location input field to be entered in degrees in decimal notation, eg.: 32.156845 or -4.563542.

> degrees/minutes/seconds notation: choosing "d/m/s" would require the location input field to be entered in degrees/minutes/seconds notation, eg.: 32 50 6 or -14 29 50. notice that a space should be enter between the degrees, minutes and seconds.

*Longitude is given in the boundary of [-180.0, 180.0] degrees. Negative longitude represents the western hemisphere and positive longitude represents the eastern hemisphere.

*Latitude is given in the boundary of [-90.0, 90.0] degrees. Negative latitude represents the southern hemisphere and positive latitude represents the northern hemisphere.

*If the origin and destination points are the same, than the distance between them would be zero, and the azimuth between them would be NaN ("not a number").

*If the distance entered by the user is such that the reference ellipsoid would be encircled, than the calculator would take it into consideration.

*Output fields are labeled using indent font, to seperate them from input fiields.

*Geoid altitude is calculated using a bilinear interpolation performed upon a 0.25 degrees grid of point value in a "tide-free" system. The Geoid is given relative ot the WGS84 ellipsoid. Maximum error in Geoid altitude is one meter.

*Rhumb line distance is calculated using earth spheroid radius of 6367435[km]. Deviation from other calculators might originate from the usage of a different earth radius.

Questions or bug reports? please contact me at malta.dan@gmail.com.

For more applications, check out my public profile at http://profiles.google.com/malta.dan/about.

ENJOY

## Atmospheric Calculator

An atmospheric calculator with a twist!

The only atmospheric calculator that allows the complete and

exact calculation of each of the "1976 standard atmosphere"

28 parameters as a function of each of the other parameters!

Tired of calculating pressure or gravitational acceleration solely out of altitude?

well, now you can enter the desired pressure or gravitational acceleration and get the the atmospheric parameters which correspond to the lowest geopotential altitude. This is done for the entire 7 layers of the atmosphere (altitudes up to 84km / 280kft)

The only atmospheric calculator that allows the complete and

exact calculation of each of the "1976 standard atmosphere"

28 parameters as a function of each of the other parameters!

Tired of calculating pressure or gravitational acceleration solely out of altitude?

well, now you can enter the desired pressure or gravitational acceleration and get the the atmospheric parameters which correspond to the lowest geopotential altitude. This is done for the entire 7 layers of the atmosphere (altitudes up to 84km / 280kft)

The atmospheric calculator parameters include:

- geometric altitude

- geopotential altitude

- lapse rate

- temperature ratio

- molecular temperature

- kinetic temperature

- mean molecular weight ratio

- mean molecular weight

- pressure ratio

- pressure

- density ratio

- density

- gravitational acceleration ratio

- gravitational acceleration

- dynamic viscosity ratio

- dynamic viscosity

- kinematic viscosity ratio

- kinematic viscosity

- speed of sound ratio

- speed of sound

- pressure scale height

- number density

- mean air-particle speed

- mean collision frequency

- mean free path

- thermal conductivity ratio

- thermal conductivity coefficient

- mole volume

Each of these parameters is given in metric and english units.

* Extrapolation is allowed(!) and performed for geometric altitudes from zero down to -5km.

* results for geometric altitudes between 80km and 86km are corrected for mean molecular weight ration which is not 1. Note that many 1976 standard atmosphere tables are not corrected according to the mean molecular weight ratio, but they do mention that this correction should be done.

Questions or bug reports?

contact me at malta.dan@gmail.com

For more applications, check out my public profile at:

http://profiles.google.com/malta.dan/about

p.s. network access is for ads.