Answer this question on a new piece of paper:

Title it: Practice Balancing Equations 1

If hot dogs come in packages of 8, and hot dog buns come in packages of 12, at least how many packages of each would you have to buy to make sure that you wouldn’t have any wasted?

Practice Balancing Equations

Challenge Problem 1:Na2B4O7 +CaF2 + SO3 BF3 + CaSO4 + Na2SO4

3, Solid aluminum reacts with hydrochloric acid to makes aluminum chloride and hydrogen gas

4. Carbon tetrahydride gas reacts with oxygen gas to make carbon dioxide and water vapor.

3 & 4: write out the chemical reaction from the names

1 & 2: answer the questions1.Compare and contrast the function of a coefficient to a subscript2. What does it mean if an equation is truly un-balanceable?

5 to 12: Balance

When finished, try challenge problem 1. Solve all challenge problems and get 100% on the balancing equation portion of the test

15. Li2O + H2O ---> LiOH 16. H3PO4 + HCl ---> PCl5 + H2O 17. CaC2 + H2O ---> C2H2 + Ca(OH)2 18. HCl + K2CO3 ---> KCl + H2O + CO2 19. Fe(OH)3 ---> Fe2O3 + H2O 20. Ca(ClO3)2 ---> CaCl2 + O2 21. Pb(NO3)2 ---> PbO + NO2 + O2 22. C2H5OH + O2 ---> CO + H2O 23. BaO + H2O ---> Ba(OH)2 24. Xe + F2 ---> XeF6 25. Ca + AlCl3 ---> CaCl2 + Al

When FinishedChoose 5 problems and write out the equation using words

Choose 5 problems and write the mole ratio

Challenge Problem 2FeCr2O4 + Na2CO3 + O2 Na2CrO4 + Fe2O3 + CO2

Challenge Problem 3 (Cr(N2H4CO)6)4(Cr(CN)6)3 + KMnO4 + H2SO4 K2Cr2O7 + MnSO4 + CO2 + KNO3 + K2SO4 + H2O