subtract9) Balance the following chemical reactions:21(b V (3V 2 (ds) (6a) Ba(NO3)2 + AlBr3BaBr2 + Al(NO3)3b) C5H12 + O2CO2 + H2OM (b ST ( IA (d 68 (6c) C4H9OH + O2CO2 + H2O(81(er

9.a)Ba(NO3)2 + AlBr3 → BaBr2 + Al(NO3)3 Count number of atoms of each element:Reactant…

Answered: subtract 9) Balance the following…

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Chapter3: Stoichiometry

Section: Chapter Questions

Problem 13ALQ: Chlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?

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Chlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?
Q11 (C) Balance the following chemical equations. (a) Cr(OH)6 + HNO3 → Cr(NO3)6 + H2O (b) Ni(ClO3)2 + Fe(OH)3 → Ni(OH)2 + Fe(ClO3)3
3. Consider the nickel salt: (NH4 )2Ni(SO4 )2 ·y H2O (Ammonium Nickel Sulfate Hydrate), where y is the number of coordinated waters. (a) Assuming that the product is anhydrous (y = 0), what is the theoretical yield of ammonium nickel sulfate from 1.500 g of Ni (s)? (b) The actual yield of product was 9.640 g - obviously containing coordinated water. The product was then heated strongly until all the water had been driven off. The resulting anhydrous salt had mass 7.000 g. What is the value of y? (c) Based on the mass of the anhydrous product (7.000 g), what is the % yield of the reaction?
4) 2 2 NaHCO3 (s) ----> 2 C(s) + 3 Na(s) + 02(g) 1 H2(g) +
A sample containing Al2O3 and Na2Cr2O7.2H2O was brought into the laboratory for analysis. The analyst heated a 2.2846 gram sample of this material to 100oC for one hour, at which time only Al2O3 and Na2Cr2O7 remained. This mixture was found to weigh 2.2312 grams. Calculate the percent chromium in the sample.
2. Balance the following equations by supplying the lowest whole numbers for w, x, y, and z: (a) w S8 + x Cl₂ → y S₂Cl₂ (b) w C3H8O + x O₂ → y CO₂ + z H₂O (c) w Fe + x H₂O → y Fe₂O3 + z H₂
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Which is correct and which is incorrect from the following sentences? Proposition True False (a) The nitrogen ions N + and oxygen O + are products of the decay of the corresponding molecules under the influence of sunlight near the earth's surface. (b) Red phosphorus is more active than white phosphorus and is therefore used in the manufacture of matches. (c) The oxidation number (a.o.) of nitrogen in all chemicals NO, NO + and NO- is +2. (d) Of the elements Al, Cl2, Na, Mg and Ca, only Na reacts with cold water to produce H2. (e) Of the two common carbon oxides, monoxide is less acidic.
Balance the following equations: (a) SO2 + O2 ------>SO3 (b) Li2O(s) + H2O(l) ------> LiOH(aq) (c) Na + H2O ------> NaOH + H2
Balance the following equations. (a) CaC2(s)+H2O(l)----->Ca(OH)2(s)+C2H2(g) ‍‍ (b)(NHa)2Cr2O7(s)------>Cr2O3(s)+N2(g)+H2O(g) ‍‍‍ (c)CH3NH2(g)+O2(g)----->CO2(g)+N2(g)+H2O(g) ‍
The oxidation state of chromium in potassium dichromate in the following reaction is: 2 K₂Cr₂O7 (aq) + 8 H₂SO4 (aq) + 3 C₂H5OH (aq) --> 2 Cr₂(SO4)3 (aq) + 2 K₂SO4 (aq) + 3 CH3COOH (aq) + 11 H₂O (1) +3 -6 +6 -3 +2 -2 0
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subtract 9) Balance the following chemical reactions: 21 (b V (3 V 2 (ds) (6 a) Ba(NO3)2 + AlBr3 BaBr2 + Al(NO3)3 b) C5H12 + O2 CO2 + H2O M (b ST ( IA (d 68 (6 c) C4H9OH + O2 CO2 + H2O (81 (er