8. Quantities in Chemical Reactions

Stoichiometry

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Balance the following equation, and tell how many moles of nickel will react with 9.81 mol of hydrochloric acid. Ni(s) + HCl(aq) → NiCl2(aq) + H2(g)
1800
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The oxidation of chromium solid is represented by the following equation:

$4 C r of s plus 3 O sub 2 of g long right arrow 2 C r sub 2 of O sub 3 of s$

How many moles of chromium (III) oxide are produced when 34.69 g Cr reacts with excess oxygen gas?
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How many moles of NiCl_2 can be formed in the reaction of 6.00 mol of Ni and 12.0 mol of HCl?
2012
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The chemical reaction of hydrogen with oxygen produces water. 2H₂(g) + O₂(g) → 2H₂O(g) c. How many moles of H₂O form when 2.5 moles of O₂ reacts?
9410
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Although Cu is not sufficiently active to react with acids, it can be dissolved by concentrated nitric acid, which functions as an oxidizing agent according to the following equation: Cu(s) + 4 HNO3(aq) → Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l) Is 35.0 g of HNO3 sufficient to dissolve 5.00 g of copper?
1901
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Titanium metal is obtained from the mineral rutile, TiO2. The process requires multiple steps, as shown in the following reactions: TiO2(S) + 2 Cl2(G) + 2 C(s) → TiCl4(s) + 2 CO(g) TiCl4(s) + 2 Mg(s) → Ti(s) + 2 MgCl2(s) How many kilograms of rutile are needed to produce 95 kg of Ti?
1933
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The reaction of potassium chlorate and sucrose is given below:
If 2.33 x 10^-7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced?
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When table sugar (sucrose, C12H22O11) is heated, it decomposes to form C and H2O. How many grams of carbon are formed by the breakdown of 60.0 g of sucrose?
2668
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If the density of ethanol, CH₃CH₂OH, is 0.789 g/mL, how many milliliters of ethanol are needed to produce 4.8 g of H₂O in the following reaction?
3632
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9
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Titanium metal is obtained from the mineral rutile, TiO2. The process requires multiple steps, as shown in the following reactions: TiO2(S) + 2 Cl2(G) + 2 C(s) → TiCl4(s) + 2 CO(g) TiCl4(s) + 2 Mg(s) → Ti(s) + 2 MgCl2(s) How many moles of TiO2 are needed to form one mole of titanium?
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Ethyl alcohol is formed by enzyme action on sugars and starches during fermentation. C6H12O6 → 2 CO2 + 2 C2H6O If the density of ethyl alcohol is 0.789 g/mL, how many quarts can be produced by the fermentation of 100.0 lb of sugar?
2015
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Titanium metal is obtained from the mineral rutile, TiO2. The process requires multiple steps, as shown in the following reactions: TiO2(S) + 2 Cl2(G) + 2 C(s) → TiCl4(s) + 2 CO(g) TiCl4(s) + 2 Mg(s) → Ti(s) + 2 MgCl2(s) Write mole ratios to show the relationship between the reactants and products for each reaction.
2178
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The following diagram represents the reaction of (red spheres) with (blue spheres):
How many moles of product can be made from 1.0 mol of A2? From 1.0 mol of B2?
1898
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