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  • What is the equation for thermal expansion?

    I have been given two equations from my tutor and I don't know which one to use and when, quite often i get the wrong answer. Are these the same equations and am I just solving them incorrectly?

    V=Vo [1+β*deltaT]

    and

    V=Vo [β*deltaT]

    Where; V = volume

    Vo= initial volume

    β = coefficient of volumetric expansion

    DeltaT= change in temperature

    Thanks

    2 AnswersPhysics8 years ago

  • Chemistry Acids and Bases Question!?

    For solution D (0.50 mol L-1 ammonium chloride/0.50 mol L-1 ammonia solution) will the pH be higher or lower than that of solution A (1.0 mol L-1 ammonium chloride solution) which has pH = 4.70?

    Thanks I have no idea how to solve this question

    1 AnswerChemistry8 years ago

  • What are the boundaries of friendship?

    When does a stranger become a friend?

    When does a friend become something more?

    When is someone a true friend?

    Thanks, this is for my philosophy assignment.

    1 AnswerFriends1 decade ago