Directions: Perform the stoichiometric calculations of the following problems 1. How many moles of KCl will be formed from 2.73 moles of KClO3? 2. How many moles H2O are needed to produce 55.7 moles of H2?

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How many grams of N2 are needed to completely (stoichiometrically) react with  222 g of Br2 ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ              The molar mass of Br2 is _____________ g and the molar mass of N2 is  ___________ g                                ____________ mol Br2                                                              (2.22 x 102 g Br2)(––––––––––––––––––––––––––––––)  =  __________ mol Br2                               _______________ g Br2                                                                                                                       ______________ mol N2 __________________ mol Br2 (–––––––––––––––––––––––––) =  _______________ mol N2                                                     __________________ mol Br2                                                       ___________________ g N2 _______________ mol N2 (–––––––––––––––––––––––––) =  _____________ g N2                                                    ________________ mol N2

Given the combustion of gasoline:  2C8H18 + 25 O2 →16CO2 +18H2O How many moles of O2 is required to react with 4.00 moles of C8H18? Select one: a. 2.00 b. 50.0 c. 25.0 d. 12.5

How many grams of N2 are needed to completely (stoichiometrically) react with 222 g of Br2 ? N2 + 3 Br2 2 NB13 + 44.0 kJ The molar mass of Br2 is g and the molar mass of N2 is mol Br2 (2.22 x 102 g Br2)(- mol Br2 g Br2 mol N2 mol Br2 (-- -) = mol N2 mol Br2 g N2 mol N2 (-- -) = |v g N2 mol N2 а. 1 b. 2 С. 3 d. 4 е. 5 f. 253.719 g. 3.38 х 100 h. 3.26 x 103 i. 44.0 j. 1.33 x 102 k. 9.77 x 103 I. 4.44 x 102 m. 6.66 x 10² n. 500.0 o. 556 р. 90.0 q. 3.2852 r. 159.81 s. 28.013 t. 1.750 u. 0.8750 v. 13.0 w. 0.46306 х. 1.3892 у. 24.5 z. 38.5 аа. 2.190 bb. evolved Cc. absorbed dd. exothermic ee. endothermic

After the equation below is balanced, how many moles of O2 can be produced from 4.0 mol of KClO3? KClO3--->KCl+O2 a. )3.0 b.) 4.0 c.) 2.0 d.) 6.0 e.)5.0

2HgO (s) →2 Hg (s) + O2(g) is best described as a ______________________ reaction.  Group of answer choices Decomposition Synthesis/Combination Double Displacement Single Displacement Combustion

15. Titanium (IV) chloride is reduced by magnesium to produce titanium according to the following reaction. a. TiCla(s) + 2Mg(s) → Ti(s) + 2MgCl2(s) How many grams of TiCla(s) can be reduced to Ti by 2000.0g of Mg?

2) C3H7OH undergoes combustion as shown in the reaction below. How many moles of oxygen would be required for the reaction if one mole of C3H7OH undergoes combustion?