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Chemistry | Science | Khan Academy Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good ... Chemistry Questions and Answers | Study.com

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Chemistry word problems sometimes may be difficult. There are several methods for solving chemical word problems. A powerful technique for solving problems is called unit analysis method, sometimes referred to as dimensional analysis method, or factor label method of problem solving. someone please help with a chemistry regents problem someone please help with a chemistry regents problem (self.chemhelp) submitted 7 hours ago by Jlc22404 I've been doing practice regents for this year's chem regent and one of the problems was "What fraction of an original Ra-228 sample remains unchanged after 17.4 years?" Online Chemistry Assignment Help, Instant Project Help ... We also offer the facility of instant chemistry online tutoring, chemistry homework help and chemistry assignment help. Further, our highly qualified team is available to solve your tricky problems 24*7 around the clock and that to at ease of your home. Inorganic Chemistry Tutorials Multiple Choice Problems...Volume I for Introductory Courses and Volume II for College Chemistry Courses. These problems are designed so that wrong answers are discussed as to the thought process that probably was used to arrive at that answer and give some hints as to how to answer the problem. Electron Dot Formulas Tutorials...

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Chemistry Help | Wyzant Resources

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