chemistry

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Find the formula mass of the compound
H2SO4.
1. 98.09 amu
2. 96.07 amu
3. 97.08 amu
4. 81.08 amu
5. 89.09 amu

  • chemistry -

    Look on the periodic table and add everything.
    2*H + 1*S + 4*O = ?

  • chemistry -

    how would you do 3PO-4

  • chemistry -

    Is that 3PO^-4 or 3(PO4)^3-

  • chemistry -

    PO3-
    4

  • chemistry -

    I can't tell what you mean.
    PO3-4 is
    1*P + 3*O
    A number as a subscript means you multiply what it is a subscript to by that number.
    P2 is 2*P
    PO4 is
    1P + 4*O
    H3PO4 is
    3*H + 1*P + 4*O

    If there are parentheses, the subsceript multiplies everything in the parentheses by that number.
    Ba3(PO4)2 is
    3*Ba + 2*P + 8*O

    A number as a coefficient multiplies the entire molecule by that number
    2NaCl is 2Na + 2Cl
    or
    2Na2SO4 is
    4*Na + 2*S + 8*O

  • chemistry -

    2nacl

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