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  1. M

    Sidekick Unlimited Plan?

    I've realized that this question has appeared on Yahoo Answers many times, but the questions & answers varies which makes me all the more confused. I currently have T-Mobile with a family plan of 3 lines. Our plan only includes 700 minutes for the family with nights & weekends free. We pay about...
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    chemistry help hydrate formulas!?

    1) copper (II) sulfate pentahydrate 2) nickel chloride hexahydrate 3) copper (II) sulfate pentahydrate ( repeated in #1 ) 4) cobalt (II) chloride hexahydrate 5) tin (II) chloride dihydrate
  3. M

    Chemistry Problems: Help?

    1. The atomic weight of a newly discovered el- ement is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a per- cent abundance of 41.7%. What is the mass of the second isotope? Answer in units of amu. 2. Which of the following is a...
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