E 21 (1 Point) Which of the following represent the reaction between MgO and H2O? a)...
1) The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is A) H+ (aq) + HNO3 (aq) + 2OH- (aq) → 2H20 (1) + NO3- (aq) B) HNO3 (aq) + NaOH(aq) → NaNO3(aq) + H20 (1) C) H+ (aq) + OH- (aq) + H2O (1) D) HNO3 (aq) + OH- (aq) + NO3- (aq) + H2O (1) E) H+ (aq) + Na+ (aq) + OH- (aq) → H20 (1) + Na+ (aq) 2) Which...
3. Which reaction describes why the pH is not 7 for the dissolution of MgF2 in water? A. Mg2+ + 4H2O = Mg(OH)2 + 2 H30+ B. Mg2+ + H2O = MgH2 + O2- c. F + H2O = HF + OH- D HF + H2O = F + H307
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- - _12) Numerical coefficients that correctly balance the reaction, Fe + H20 Fe3O4 + H2 are, A) 3,4, 1,4 B) 3, 1, 4,4 C) 3, 5, 2,4 D) 1.3, 4,4 13) The word equation "calcium reacts with chlorine to produce calcium chloride" would be represented by which of the following formula equations? (a) CaCl2 +CaCl2 (b) CaCl2 Ca+ Cl2 (c) CaCl2 +CaCl2 (d) Ca+ Cl2 -CaCl2 _14) Which of the following is a decomposition reaction?...
46. Which species in the reaction below undergoes reduction? H2O(g) + CO(g) -H2(g) + CO2(g) a. H20 b.CO CH2 d. co2 e. None 47. Which species is reduced in the reaction below? (aq) + CIO (aq) + 10 (aq) + C (aq) a. b. H20 c.cr d. 10 e. CIO 48. Which of the following elements generally acts as an oxidizing agent? a. Br2 b.H2 c. Fed . C e. Li 49. What is the oxidation number of Fe in...
Consider the following reaction: 2Mg(s)+O2(g)→2MgO(s)ΔH=−1204kJ a. How many grams of MgO are produced during an enthalpy change of -95.0 kJ ? b. How many kilojoules of heat are absorbed when 7.60 g of MgO(s) is decomposed into Mg(s) and O2(g) at constant pressure?
Which of the following shows a formation reaction? States are omitted for simplicity. Assume all substances are in their standard states. OHCI + NaOH -NaCl + H20 2Mg + O2 + 2Mgo CaO + H2O -> Ca(OH)2 OS + 3F2 SF6
Which of the following reactions has a net lonic equation of H^+ (aq)+OH^- (aq)-> H20(l) a) 2NaOH(s)+CO2(g)-> Na2CO3 (s)+ H2O (l) b) NH3 (aq)+H2O(l)-> NH4OH(aq) c) KOH(aq)+ HClO4 (aq)-> H2O (l) +KClO4 (aq) d) MgH2 (s)+ 2H2O (l)->2H2(g)+Mg(OH)2 (aq) e) none of the above
Question 21 4 pts Consider the following reaction: 2 Mg + O2 → 2 MgO AH rxn=-1203 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 4 moles of Mg. 0-2406 kJ 0-601.5 kJ O-1203 kJ O-4812 kJ none of the above
For the reaction 2 H2O(g) = 2 H2(g) + O2(g), which of the following is the equilibrium constant expression? K = [H21 [02] [H20] K = [H20] / [H21 [02] K = [H2012 / [H272 [02] K = [H212 [102] / [H2012
In this answer how was MgO moved to the other side?
1. Mgo + 2HCI Mac Ho +2 HC 2. Mgciz H2 + V201 3. H2O (21+B)-) > Addiy eq 2 to 3 and then Aubtract fron1 -Mgo 2y61 MaO Mg is the quired equation This Tuy y afpyirg by 1,2,3 help. Hen Jaw, we can detormuns enthalfy-change fr 4 In this experiment, you will use Hess's Law to determine a heat of reaction that would be difficult to obtain...