12, 18 thank you - - _12) Numerical coefficients that correctly balance the reaction, Fe +...
balance each of the following equations Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue book. Plesse leave at least two lines between question and show your calculations for full credit. N-6.023 x 10” particles per mol: R 0.08.205 L-atm/(mol-K) b) Al2(PO4) 3 e) CuSO4-5 H2O 1. Calculate the molar masses of: a) (NH4)2SO4 2. Calculate: a) the number of atoms of calcium in a 10.50 g sample of the metal b) the mass...
18) Which of the following is an acid-base reaction? A) Fe(s) + 2 AgNO3(aq) - 2 Ag(s) + Fe(NO3)2(aq) B) MgSO4(aq) + Ba(NO3)2(aq) -- Mg(NO3)2(aq) + Baso C) C(s) + O2(g) - CO2(g) (D) 2 HCIO 4(aq) + Ca(OH)2(aq) → 2 H2O(l) + Ca(C1O4)2 E) None of the above are acid base reactions. 1 Determine the oxidation state of P in PO 33-. A-3 B) 0 C) +6
Match Each reaction to its reaction type: 2 NaBr + Cl2 → 2 NaCl + Br2 Na2SO4 + CaCl2 → CaSO4 + 2 NaCl CH4 + 2 O2 → CO2 + 2 H2O CaCO3 → CaO + CO2 MgO + H2O → Mg(OH)2 HCl + NaOH → NaCl + H2O A. Decomposition B. Double Replacement C. Combustion D. Acid/Base E. Explosion F. Combination G. Single Replacement
12) 12) As defined in the text, identify the "gas evolution" reactions among the following 1. 2HCl(aq) +K2CO3(aq) --H2O(l) + CO2(g) + 2Cl(aq) 2. CH4(g)+202(g) + CO2(g) + 2H2O(1) 3. 2HCl(aq) +K2S(aq) -- H2S(g)+2KCl(aq) A) 1 and 2 only B) 1 and 3 only C) 2 and 3 only D) All of 1, 2, and 3 E) None of 1, 2, and 3 13) 13) Identify the oxidation-reduction reactions among the following: 1. Zn(s)+Cu2(aq) -- Zn2+aq) + Cu(s) 2. 2...
4.) (20%) Which one of the following is an acid base reaction? a) C(s) + O2(g) → CO2(g) b) 2 HCl(aq) + Ca(OH)2(aq) + 2 H2O(1) + CaCl2(aq) c) Fe(s) + 2 AgNO3(aq) — 2 Ag(s) + Fe(NO3)2(aq) d) MgSO4(aq) + Ba(NO3)2(aq) + Mg(NO3)2(aq) + BaSO4(s) e) None of the above are acid base reactions.
IU. AS is positive for the reaction A) CaO (s) + CO2 (g) CaCO3 (S) B) N2 (g) + 3H2(g) → 2NH3 (g) C) 2503 (g) - 2802 (g) + O2 (g) D) Ag+ (aq) + Cl- (aq) → AgCl (s) E) H20 (1) + H20 (s) 11. AS is positive for the reaction A)2 Ca(s) + O2 (g) 2 Cao (s) B) 2 KClO3 (s) 2KCI(S) + 30 (g) C) HCl (8) + NH3 (8) ► NH4Cl (s) D)...
8. Which of the following reactants, when mixed, would evolve a gas. a) Li2S(aq) + 2HCl(aq) → b) Na2SO3(aq) + HNO3(aq) → c) K2CO3(aq) + 2HCl(aq) → d) All of the above. e) Only b and c. 9. Which of the following samples has the fewest moles of gas? a) 1.00 L of CH4 at 10°C and 1.00 atm b) 1.00 L of NH3 at 10°C and 1.00 atm 1.00 L of HCl at 20°C and 1.00 atm a) 1.00...
how many moles of lithium nitrate are theoretically produced if we start with 34 moles of Ca(NO3)2 and 24 moles of LigPO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 -- LINO3 + Caz(PO4)2 A) 1.1 B) 6.8 C) 1.2 D) 7.2 E) not enough information 28) – 28) What is the limiting reactant for the following reaction given we have 2.6 moles of HCl and 1.4 moles of Ca(OH)2? Reaction: 2HCl + Ca(OH)2 + 2H2O +CaCl2 A) Ca(OH)2 B) HCI C) CaCl2 D)...
Balance each of the following skeletal equations: (a) Mg(s)+ O2(g) (b) Zn(s)+ AgNO3(aq) Zn(NO3)2(aq) + Ag(s) (c) C2H2(g)+O2(g) CO2(g) + H20(g) 5.38 MgO(s) odm(d) C12H22O11(s) +KCIO3(I) Constder the foll CO2(g) +H20(g) + KCI(s)
Could you please explain in detail how to do these questions? Thank you in advance. --- (3 points) Which of the following should have the highest conductivity? a. 3.0 M NaCl b. 2.4 M CaCl2 c. 3.2 M NH4NO3 d. 2.1 M Na3PO4 (2 points) You have an aqueous solution containing lead(II), sodium, iron(III), and potassium ions. You need to devise a way to separate the ions from one another. Which of the following statements is NOT correct regarding your...