# Recent Posts

Title | Description | Creator | created |
---|---|---|---|

Empirical Formulae by Percentage Composition | Get the empirical formula given the percentage compositions of all elements in the compound. | Dr. Osama M. Khaled | 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. | Dr. Osama M. Khaled | May 21, 2024 08:56 PM |

Mathematics APIs | Dr. Osama M. Khaled | May 19, 2024 08:40 AM | |

Standard Header parameters | Dr. Osama M. Khaled | May 19, 2024 08:28 AM | |

Solve Algebraic Equations | Solve equations algebraically (symbolically) | Dr. Osama M. Khaled | May 18, 2024 03:57 PM |

Subscription Validation | Dr. Osama M. Khaled | May 18, 2024 12:19 PM | |

Chemistry APIs | A collection of chemistry REST APIs that provide detailed calculations for chemistry related formulas | Dr. Osama M. Khaled | May 18, 2024 09:47 AM |

Improper fractions to mixed numbers | Write improper fractions as mixed numbers | Dr. Osama M. Khaled | May 17, 2024 01:22 PM |

The Periodic Table | Click on an element to get its properties | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | May 13, 2024 11:01 AM |

The whole number and fractional parts | Identify the whole number and fractional parts of a mixed number | Dr. Osama M. Khaled | May 12, 2024 03:00 AM |

Application Problems | Solve application problems by adding and subtracting fractions | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | Apr 28, 2024 07:27 AM | |

Fractions that have the same denominator | Add and subtract fractions that have the same denominator | Dr. Osama M. Khaled | Apr 26, 2024 01:43 AM |

Application Problems | Problems that involve forming equal-sized groups can be solved by division | Dr. Osama M. Khaled | 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. | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | Apr 01, 2024 12:43 PM |

Weightlessness | Heavy and light objects fall at the same rate !! | Dr. Osama M. Khaled | 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. | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | 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 | Dr. Osama M. Khaled | Mar 27, 2024 07:56 AM |

The Law of Gravity | Learn how gravity keeps the universe in balance | Dr. Osama M. Khaled | Mar 20, 2024 08:52 PM |

Find the reciprocal of a fraction | Division with fractions involves working with reciprocals | Dr. Osama M. Khaled | 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 |

Evaluate exponential expressions that have fractional bases | If the base of an exponential expression is a fraction, the exponent tells us how many times to write that fraction as a factor | Dr. Osama M. Khaled | Mar 12, 2024 04:54 AM |

Simplify answers when multiplying fractions | After multiplying two fractions, we need to simplify the result, if possible | Dr. Osama M. Khaled | Mar 06, 2024 08:40 AM |

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