Question

1. when the chemical equation Fe2O3(s)+C(s) (arrow) Fe(s) +CO(g) is balanced, the coefficients in order will be:

2. In a chemical reaction, the symbol "(s)" may be read as:

a)solution

b) solid

c) soluble

d) state

3. A reactant in the chemical reaction Cl2 (g) + 2NABr (aq) arrow 2NACl(aq) + Br2(aq) is:

a) chlorine

b) sodium chloride

c) bromine

d) none of the above

4. The reaction Al2O3(s) +6HCl(aq) arrow 2AlCl3(aq) +3H2O(I) is a balanced equation.

5. What is the empirical formula of a compound that contains 32.4% sodium, 22.6% sulfur and 45.0% oxygen?

6. What is the empirical formula of a compound that contains 22.15 grams nickel and 5.85 grams phosphorous?

Answer 1

19 F.036+3s) + 28 + 360,9) Atelis + 34,00) (s) & solid @ Sentant pels AlO3.g+ Gutelar, Balanced Equation A element na s 2. 32.4 at wt 23 atint 3214 - 1.40 o 32 22.6 32 2216 2017 ***** 45.0 16 soos 32.4 22.6 32 23 2.8 2.8 1.4 0.2 0.7 0.7 0.7 - -2 (la,soy) Empreicel formula, © %. Ni p 79.14 7. P = 20.89% 23.1" x 100 l e t y cono. element Ni P % 79.1 20.89 atout sq 31 i ut 79 12 20.89 = 1.34 30.673

Simplest retio 1.34 0.673 0.673 0.673 52