1. T

    Calculations involving moles and percentage yield

    Hello all! I'm just starting out on chemistry and I don't even know where I would begin with these questions: What volume of a 2.40 mol/L magnesium bromide solution would contain 3.40 x 10^23 atoms of bromine? The reaction of 2.0g of Br2 with 4.0g of F2 produced BeF5 in 45% yield. How many...
  2. P

    Test for Avogadro's hypothesis

    I took a piece of charcoal from my fireplace, fired it up over a burner to get it red hot, dropped it into a glass, and quickly covered the top of the glass tightly with a piece of plastic wrap. My expectation was that, if carbon monoxide was produced, each oxygen molecule to be replaced by two...