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1) How many moles of sodium are there in 2.5 moles of Na3PO4?

2) You burn natural gas as shown in the reaction below. What weight of water will be given off when 0.32g of natural gas (CH4) is burned with excess oxygen? note you must balance the equation!

CH4 + O2 arrow CO2 + H2O

3) How many grams of HCl are there in 12ml of a 0.25 M solution of HCl?

4) You dilute 15 ml of 0.64 M HCH3COO to a total volume of 60ml. What is the molarity of acetic acid, [HCH3COO], in the diluted solution?

5) You have aqueous solutuin of HCl, NaCH3COO and AgNO3. What are the ions that are present in these aqueous solution? When you mix all of the solutions together, what reaction, if any occurs?

6) What heat is given off when 2.5g of iron rust according to the following reaction which has a deltaH of -1648KJ/mole?

7) Estimate deltaG for the following process.

a) spontaneous=
b) nonspontaneous=
c) process at equilibrium=

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M91035860

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