Author: Anonymous

Which of the following reactions will not produce a precipitate?

Which of the following is correctly classified? I: 2 Al(s) + 3 Cl2(g)  ⟶  2 AlCl3(s)   Classified as a combination reaction. II: 2 NaOH(aq) + H2SO4(aq)  ⟶  Na2SO4(aq) + 2 H2O(l) Classified as a neutralization reaction. III: CaCO3(s)  ⟶  CaO(s) + CO2(g)  Classified as a decomposition reaction. IV: CH4(g) + 2 O2(g)  ⟶  CO2(g) + 2 H2O(g) Classified as a combustion reaction. V: AgNO3(aq) + NaCl(aq)  ⟶  AgCl(s) + NaNO3(aq)  Classified as a precipitation reaction.

This is Section 1 of the Exam. Please answer all 19 questions (150 points)

A student has 100. mL of 6.0 M HCl stock solution.  They take 31.25 mL of the stock solution and dilute it using enough water to make 250. mL of solution.  What is the resulting concentration if they take 25.0 mL of this new solution and dissolve it in enough water to make 100. mL of solution?

When 12.0 g of magnesium metal reacts with 10.0 g of oxygen gas to form magnesium oxide, what is the limiting reactant and how much excess remains?

Which of the following are ionic compounds? I: Al2O3                  II: FeSO4               III: NH4NO3 

Tetraphosphorus hexaoxide (MM = 219.88 g/mol) is formed by the reaction of phosphorus with oxygen gas: P4(s) + 3 O2(g)  →  P4O6(s)       If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen gas produce 43.3 g of P4O6, what is the percent yield for the reaction?  

Primaries are held in

Based on median voter theory, who gets results after the general election?

Based on median voter theory, if everything is working properly