Elements and Compounds
All of the materials and substances that we experience are made up of elements
Dr. Osama M. Khaled
May 30, 2024 08:48 PM
Application Problems
Solve application problems by multiplying and dividing mixed numbers
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May 28, 2024 09:04 PM
Empirical Formulae by Percentage Composition
Get the empirical formula given the percentage compositions of all elements in the compound.
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May 22, 2024 08:05 AM
Multiply and divide mixed numbers
The same procedures used to multiply and divide fractions can be used with mixed numbers.
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May 21, 2024 08:56 PM
Mathematics APIs
A collection of REST APIs to make your life easier with advanced calculations
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May 19, 2024 08:40 AM
Standard Header parameters
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May 19, 2024 08:28 AM
Solve Algebraic Equations
Solve equations algebraically (symbolically)
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May 18, 2024 03:57 PM
Subscription Validation
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May 18, 2024 12:19 PM
Chemistry APIs
A collection of chemistry REST APIs that provide detailed calculations for chemistry related formulas
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May 18, 2024 09:47 AM
Improper fractions to mixed numbers
Write improper fractions as mixed numbers
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May 17, 2024 01:22 PM
The Periodic Table
Click on an element to get its properties
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May 14, 2024 11:10 AM
Make a chemical compound
Make a compound and get details about its molar mass, percentage composition by mass, and stoichiometry. The compound can be written as H2O and enter only one measurement below.
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May 14, 2024 11:10 AM
Write mixed numbers as improper fractions
Understand in simple steps how to write a mixed number as an improper fraction
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May 13, 2024 11:01 AM
The whole number and fractional parts
Identify the whole number and fractional parts of a mixed number
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May 12, 2024 03:00 AM
Application Problems
Solve application problems by adding and subtracting fractions
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May 07, 2024 08:37 AM
Identify the greater of two fractions
If two fractions have the same denominator, the fraction with the greater numerator is the greater fraction
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May 05, 2024 08:16 PM
Find the LCD to add and subtract fractions
When we add or subtract fractions that have different denominators, the least common denominator is not always obvious
Dr. Osama M. Khaled
May 03, 2024 08:28 AM
Add and subtract fractions that have different denominators
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Apr 28, 2024 07:27 AM
Fractions that have the same denominator
Add and subtract fractions that have the same denominator
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Apr 26, 2024 01:43 AM
Application Problems
Problems that involve forming equal-sized groups can be solved by division
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Apr 21, 2024 10:50 PM
Divide Fractions
To divide two fractions, multiply the first fraction by the reciprocal of the second fraction. Simplify the result, if possible.
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Apr 19, 2024 07:54 AM
Calculations
The law of gravity included a symbol for proportionality. In order to use this relationship for solving problems, we must remove the proportionality by placing a constant in the expression
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Apr 01, 2024 12:43 PM
Weightlessness
Heavy and light objects fall at the same rate !!
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Mar 31, 2024 07:48 PM
Earth Satellites
Newton argued that if a cannon could be placed on a hill high enough to be outside the earth's atmosphere, and if the cannon could be made powerful enough, a cannonball could be placed in orbit around the earth.
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Mar 30, 2024 07:48 PM
Kepler's Third Law
Kepler's third law states the relationship between a planet's average distance from the sun and the time required for the planet to complete one orbit
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Mar 29, 2024 07:55 PM
Kepler's Laws
About 50 years before Newton formulated the law of gravity, Johanne Kepler (1571-1630) had found some rules that could be used to calculate the orbits of the planets
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Mar 27, 2024 08:47 PM
The Moon and Gravity
The moon is 240,000 miles from earth-center, or 60 times as far as we are from center
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Mar 27, 2024 07:56 AM
The Law of Gravity
Learn how gravity keeps the universe in balance
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Mar 20, 2024 08:52 PM
Find the reciprocal of a fraction
Division with fractions involves working with reciprocals
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Mar 17, 2024 01:23 AM
Solve application problems by multiplying fractions
The key word of often appears in application problems involving fractions. When a fraction is followed by the word of, it indicates that we are to find a part of some quantity using multiplication
Dr. Osama M. Khaled
Mar 14, 2024 07:37 PM
