University:
Seattle Pacific University
Course:
CHM 1211 | General Chemistry I
Academic year:

2022
Views:

365

Pages:

2
Author:

Hallie Randolph

Answer Key Balancing Equations Challenge Part A: Parts & Pieces (1) Circle each subscript in each chemical formula. (2) Draw a square around each coefficient. (3) Answer the questions related to each chemical formula. O2 CO2 5H2 What element does the O represent? OXYGEN How many atoms of each element are in the formula shown? C=1 O=2 How many atoms of Hydrogen are in this formula as shown? 10 2C2H6 2Na2SO4 How many atoms each element are in the formula shown? C = 4 H = 12 How many atoms each element are in the formula shown? Na = 4 S = 2 O = _8 Part B: Label the chemical equation using PRODUCT, REACTANTS, SUBSCRIPT, COEFFICIENT, and YIELDS. YIELDS REACTANTS 2 Mg + O2 SUBSCRIPT PRODUCT → 2 MgO COEFFICIENT Part C: Balance each of the following equations. 2H2 + O2 → 2H2O N2 + 3H2 → 2NH3 2Al2 O3 → 4Al Remember → List the atoms, count, and solve! 2H2O2 → P4 + 3O2 + 3O2 2C2 H6 + 7O2 → 4CO2 + 6H2O 2H2O + O2 → P4O6 4Na + O2 → C + 2H2 → 3Fe + 4H2O → Fe3O4 + Na2SO4 + CaCl2 → CaSO4 + 2Na2O CH4 4H2 2NaCl