What is the formula weight of #Mg(BrO_4)_2#?

Current Version

Answer:

#312.11 g/"mol"#

Explanation:

The formula weight of magnesium perbromate can be obtained by using the following equation:

atomic weight of element #xx#number of atoms given by subscript #=# formula mass

First, you want to have a periodic table available so you can determine the atomic weight of Mg, Br, and O:

  • Mg has a molar mass of 24.31 g/mol
  • Br has an atomic weight of 79.90 g/mol
  • O has an atomic weight of 16.00 g/mol

There is one magnesium atom, so the atomic mass of Mg is just 24.31 g/mol

From the chemical formula, we have 2 bromine atoms. Therefore, the atomic mass has to be multiplied by 2 to obtain an atomic weight of 159.80 g/mol.

There are 8 oxygen atoms, so the atomic mass has to be multiplied by 8, which gives you a value of 128.00 g/mol

Now you want to add the mass of each atom together to obtain the formula mass of the entire compound:

#color(magenta) ("24.31 g/mol + 159.80 g/mol + 128.00 g/mol = 312.11 g/mol")#

Edit History
  • Kayla
    @kayla-14 Kayla updated the answer.
    1 week ago
    Changes | Side by side
    #312.11 "g/mol")# The formula weight of magnesium perbromate can be obtained by using the following equation: **atomic weight of element #xx#number of atoms given by subscript #=# formula mass** First, you want to have a periodic table available so you can determine the atomic weight of Mg, Br, and O: - Mg has a molar mass of 24.31 g/mol - Br has an atomic weight of 79.90 g/mol - O has an atomic weight of 16.00 g/mol There is one magnesium atom, so the [atomic mass](https://socratic.org/chemistry/a-first-introduction-to-matter/atomic-mass-and-isotope-abundance) of Mg is just 24.31 g/mol From the chemical formula, we have 2 bromine atoms. Therefore, the [atomic mass](https://socratic.org/chemistry/a-first-introduction-to-matter/atomic-mass-and-isotope-abundance) has to be multiplied by 2 to obtain an atomic weight of 159.80 g/mol. There are 8 oxygen atoms, so the [atomic mass](https://socratic.org/chemistry/a-first-introduction-to-matter/atomic-mass-and-isotope-abundance) has to be multiplied by 8, which gives you a value of 128.00 g/mol Now you want to add the mass of each atom together to obtain the formula mass of the entire compound: #color(magenta) ("24.31 g/mol + 159.80 g/mol + 128.00 g/mol = 312.11 g/mol")#
    #312.11 g/"mol"# The formula weight of magnesium perbromate can be obtained by using the following equation: **atomic weight of element #xx#number of atoms given by subscript #=# formula mass** First, you want to have a periodic table available so you can determine the atomic weight of Mg, Br, and O: - Mg has a molar mass of 24.31 g/mol - Br has an atomic weight of 79.90 g/mol - O has an atomic weight of 16.00 g/mol There is one magnesium atom, so the [atomic mass](https://socratic.org/chemistry/a-first-introduction-to-matter/atomic-mass-and-isotope-abundance) of Mg is just 24.31 g/mol From the chemical formula, we have 2 bromine atoms. Therefore, the [atomic mass](https://socratic.org/chemistry/a-first-introduction-to-matter/atomic-mass-and-isotope-abundance) has to be multiplied by 2 to obtain an atomic weight of 159.80 g/mol. There are 8 oxygen atoms, so the [atomic mass](https://socratic.org/chemistry/a-first-introduction-to-matter/atomic-mass-and-isotope-abundance) has to be multiplied by 8, which gives you a value of 128.00 g/mol Now you want to add the mass of each atom together to obtain the formula mass of the entire compound: #color(magenta) ("24.31 g/mol + 159.80 g/mol + 128.00 g/mol = 312.11 g/mol")#
    From

    Answer:

    #312.11 "g/mol")#

    Explanation:

    The formula weight of magnesium perbromate can be obtained by using the following equation:

    atomic weight of element #xx#number of atoms given by subscript #=# formula mass

    First, you want to have a periodic table available so you can determine the atomic weight of Mg, Br, and O:

    • Mg has a molar mass of 24.31 g/mol
    • Br has an atomic weight of 79.90 g/mol
    • O has an atomic weight of 16.00 g/mol

    There is one magnesium atom, so the atomic mass of Mg is just 24.31 g/mol

    From the chemical formula, we have 2 bromine atoms. Therefore, the atomic mass has to be multiplied by 2 to obtain an atomic weight of 159.80 g/mol.

    There are 8 oxygen atoms, so the atomic mass has to be multiplied by 8, which gives you a value of 128.00 g/mol

    Now you want to add the mass of each atom together to obtain the formula mass of the entire compound:

    #color(magenta) ("24.31 g/mol + 159.80 g/mol + 128.00 g/mol = 312.11 g/mol")#

    To

    Answer:

    #312.11 g/"mol"#

    Explanation:

    The formula weight of magnesium perbromate can be obtained by using the following equation:

    atomic weight of element #xx#number of atoms given by subscript #=# formula mass

    First, you want to have a periodic table available so you can determine the atomic weight of Mg, Br, and O:

    • Mg has a molar mass of 24.31 g/mol
    • Br has an atomic weight of 79.90 g/mol
    • O has an atomic weight of 16.00 g/mol

    There is one magnesium atom, so the atomic mass of Mg is just 24.31 g/mol

    From the chemical formula, we have 2 bromine atoms. Therefore, the atomic mass has to be multiplied by 2 to obtain an atomic weight of 159.80 g/mol.

    There are 8 oxygen atoms, so the atomic mass has to be multiplied by 8, which gives you a value of 128.00 g/mol

    Now you want to add the mass of each atom together to obtain the formula mass of the entire compound:

    #color(magenta) ("24.31 g/mol + 159.80 g/mol + 128.00 g/mol = 312.11 g/mol")#

  • Kayla
    @kayla-14 Kayla wrote an answer.
    1 week ago

    Answer:

    #312.11 "g/mol")#

    Explanation:

    The formula weight of magnesium perbromate can be obtained by using the following equation:

    atomic weight of element #xx#number of atoms given by subscript #=# formula mass

    First, you want to have a periodic table available so you can determine the atomic weight of Mg, Br, and O:

    • Mg has a molar mass of 24.31 g/mol
    • Br has an atomic weight of 79.90 g/mol
    • O has an atomic weight of 16.00 g/mol

    There is one magnesium atom, so the atomic mass of Mg is just 24.31 g/mol

    From the chemical formula, we have 2 bromine atoms. Therefore, the atomic mass has to be multiplied by 2 to obtain an atomic weight of 159.80 g/mol.

    There are 8 oxygen atoms, so the atomic mass has to be multiplied by 8, which gives you a value of 128.00 g/mol

    Now you want to add the mass of each atom together to obtain the formula mass of the entire compound:

    #color(magenta) ("24.31 g/mol + 159.80 g/mol + 128.00 g/mol = 312.11 g/mol")#