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29 August, 20:10

An experiment calls for 10.0 mL of bromine (d = 3.12 g/mL). Since an accurate balance is available, it is decided to measure the bromine by mass. How many grams should be measured out? Multiple Choice 3.21 32.1 3.12 31.2 0.312

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  1. 29 August, 20:15
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    31.2g

    Explanation:

    The following data were obtained from the question:

    Volume of bromine = 10mL

    Density of bromine = 3.12 g/mL

    Mass of bromine = ... ?

    The Density of the substance is related to it's mass and volume by the following equation:

    Density = Mass / volume

    With the above equation, we can calculate the mass of bromine as follow:

    Density = Mass / volume

    Volume of bromine = 10mL

    Density of bromine = 3.12 g/mL

    Mass of bromine = ... ?

    Density = Mass / volume

    3.12 = Mass / 10

    Cross multiply

    Mass of bromine = 3.12 x 10

    Mass of bromine = 31.2g

    Therefore, the mass of bromine is 31.2g
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