Physics & Chemistry (3º ESO)

  • (#3433)   Seleccionar

    Converting ounces to pounds 0001

    Convert 7 678 ounces to pounds.

  • (#3114)   Seleccionar

    True or false questions 0001

    Decide if these sentences are true or false and rewrite the false sentences correctly. Be careful because each mistake discounts a right answer:

    a) Density of a solution is equal to the mass of the solute divided by the volume of the solvent.

    b) The interaction between unlike charges is a repulsion force.

    c) Distillation is the method to separate miscible liquids.

    d) Decantation is the correct method to separate a mix of alcohol and water.

  • (#3113)   Seleccionar

    Magnitudes and units 0001

    The structure of a chemical compound is a cube. If the length of the edge of the cube is 500 pm, what will be the volume of the cube expressed in mL?

  • (#1931)   Seleccionar

    Solutions: Percentage by mass 0001

    Make a solution by mixing 22 g of sugar and 240 mL of milk. Determine the percentage by mass of this solution. How much sugar is needed to prepare 500 g of solution with the same concentration?

  • (#1927)   Seleccionar

    General gas law: final volume of a gas (1927)

    Calculate the final volume of a gas at 30 ^oC and 1.1 atm, when its volume is 3 L and temperature and pressure are increased to 42 ^oC and 1.3 atm.