Potassium chlorate decomposes to potassium chloride and oxygen, as shown in the equation below. 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g) Which of the following sentences is a correct expression for a relationship between substances in this reaction?

How many moles of Br2 are required to react with 2.22 x 102 moles of N2 ?   note: the reaction must be balanced, don't leave anything blank. _____________ N2   +   ________________ Br2   →   ___________ NBr3   +   44.0 kJ                                             __________________ mol Br2 (2.22 x 102 mol N2)(–––––––––––––––––––––––––––––)  = ________ mol Br2                                 __________________ mol N2

Ethylene and chlorine react to form ethylene dichloride, like this: CH₂CH₂(g) + Cl₂(g) → CH₂CH₂Cl₂(g) Use this chemical equation to answer the questions in the table below. Suppose 55.0 mmol of CH₂CH₂ and 55.0 mmol of Cl₂ are added to an empty flask. How much CH₂CH₂ will be in the flask at equilibrium? Suppose 120. mmol of CH₂CH₂Cl2 are added to an empty flask. How much CH₂CH₂ will be in the flask at equilibrium? None. Some, but less than 55.0 mmol. 55.0 mmol. More than 55.0 mmol. None. Some, but less than 120. mmol. O 120. mmol. O More than 120. mmol. 00000

18. Pentane, C,H,2, reacts with oxygen gas to produce carbon dioxide and water: C,H2 + O, → co, + H,0 After the equation is correctly balanced, what will be the mole ratio of water produced to oxygen gas consumed? а. 3:4 b. 4:3 C. 6:1 d. 2:1