1.

    A chemist measures a reaction rate as 2.5imes1032.5 imes 10^{-3} mol L1^{-1} s1s^{-1}. Express this rate in molecules cm3cm^{-3} μs1\mu s^{-1} (molecules per cubic centimeter per microsecond). Avogadro's number = 6.022imes10236.022 imes 10^{23} molecules/mol.

    A

    1.5imes10121.5 imes 10^{12} molecules cm3cm^{-3} μs1\mu s^{-1}

    B

    2.5imes10182.5 imes 10^{18} molecules cm3cm^{-3} μs1\mu s^{-1}

    C

    1.5imes10151.5 imes 10^{15} molecules cm3cm^{-3} μs1\mu s^{-1}

    D

    4.2imes10204.2 imes 10^{20} molecules cm3cm^{-3} μs1\mu s^{-1}

    Question Tags

    Related Questions

    3.

    The dimensional formula for Boltzmann’s constant is

    A

    [ML2T2heta1]\left[ {M{L^2}{T^{ - 2}}{heta ^{ - 1}}} \right]

    B

    [ML2T2]\left[ {M{L^2}{T^{ - 2}}} \right]

    C

    [ML0T2heta1]\left[ {M{L^0}{T^{ - 2}}{heta ^{ - 1}}} \right]

    D

    [ML2T1heta1]\left[ {M{L^{ - 2}}{T^{ - 1}}{heta ^{ - 1}}} \right]

    Question Tags

    10.

    Solar constant is defined as energy received by earth per cm2{\rm{c}}{{\rm{m}}^2} per minute. The dimensions of solar constant are

    A

    [ML2T3]\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 3}}} \right]

    B

    [M2L0T1]\left[ {{{\rm{M}}^2}{{\rm{L}}^0}{{\rm{T}}^{ - 1}}} \right]

    C

    [ML0T3]\left[ {{\rm{M}}{{\rm{L}}^0}{{\rm{T}}^{ - 3}}} \right]

    D

    [MLT2]\left[ {{\rm{ML}}{{\rm{T}}^{ - 2}}} \right]

    Question Tags

    company logo