Chem

posted by .

How do I determine the number of grams for the following Substance? 7.8 mol ZnSo4

  • Chem -

    grams = mols x molar mass

  • Chem -

    1molZnSO4= 164.46gZnSO4( the molar mass)
    7.8 mol ZnSO4* (164.46gZnSO4/1molZnSO4)
    = 1259.388g ZnSO4

  • Chem -

    I got 161.47g/mol for ZnSO4

    Zn= 65.4094 g/mol
    S= 32.065 g/mol
    O= 4(15.999 g/mol)

    Other than that your method for calculating is correct.

    7.8mol ZnSO4 x 161.47g/mol= _________?

  • Chem -

    Using a calculator on the web I obtained 161.45 g/mol ZnSO4. I don't know it that site has the "latest" changes or not. I'm glad Christina caught that.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. science-chem

    Four bottles, labeled A through D, each containing about 5 grams of finely powdered white substance are found in a lab. Near the bottles are four labels specifying high purity and indicating that substances are glucose (C6H12O6), sodium …
  2. Chem

    If you start with 3.500 g of ZnSO4 (Zinc Sulfate) & 7 H2O and heat it for 10+ minutes to remove the water of hydration, what will be the mass of water removed?
  3. Chem Also Urgent!

    How do I determine the number of grams for the following substance: 2.40 mol O2?
  4. Chem 2

    1.057 grams of a substance with a molar mass of 385.336 g/mol are dissolved in 249.92. Ther temperature for the system changes from 83.83 to 52.38 degrees C during the mixing. What is the DH(heat of solution) for this process in kJ/mol. …
  5. Chemistry

    Assume that a reaction occurs in which unknown substances R and S react to form unknown substances T and U. From the information below, determine the mass of substance T that will be formed if 45.0 grams of substance R reacts with …
  6. chem

    Calculate the standard enthalpy change for the reaction 2A+B->2C+D Use the following data: Substance A=-257kj/mol B=-413kj/mol C=189kj/mol D=-475kj/mol For the reaction given , how much heat is absorbed when 3.00mol of A react?
  7. Chemistry

    Suppose 1.0 mol of substance A reacts with 1.0 mol of substance B. to produce 2.0 mol of substance C. In a reaction, 2.4 mol of substance A is allowed to react with 2.1 mol of substance B. What amount in moles of substance c is produced?
  8. Chem

    Calculate the number of grams in each of the following. (3 s.f.) 19. 0.550 mol Au ________________________
  9. Chemistry

    In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B 2A ---> 3B How many molecules of substance B are produced when 27.9 g of substance A reacts?
  10. chemistry

    Calculate the following quantities. (See the periodic table.) (a) mass, in grams, of 2.54 10-2 mol of CdS g (b) number of moles of NH4Cl in 90.0 g of this substance mol (c) number of molecules in 5.081 10-2 mol C6H6 molecules (d) number …

More Similar Questions