This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Chem 101 (2) Exam 2A Name: ____________________________________ March 5, 2005 (please print legibly) Pledge : I have neither given nor received help on this exam : ________________________________ Instructions: • Your answer must be in the box or line for each problem or NO CREDIT will be given. • Exams written in pencil will not be eligible for a regrade. • Make sure that your significant figures are correct for ALL questions! • Indicate the units for all answers for full credit! • Sign pledge or your exam will not be graded. • Use the atomic masses on the periodic table in the lecture hall for calculations in this exam • The last page is scratch paper but must be turned in with the exam USEFUL FORMULAS AND NUMBERS : ∆ E = q + w w = -P ∆ V H = q p q = sm ∆ T q soln = -q rxn q rxn = -C cal ∆ T 1 mole = 6.02 X 10 23 units (ie atoms, etc) 1 J = 1 kg m 2 /s 2 ∆ H ° rxn = Σ n ∆ H ° f (products) - Σ m ∆ H ° f (reactants) E k = (1/2)mv 2 1 Chem 101 (2) Exam 2A Name: __________________________________________...
View Full Document
- Spring '02
- Chemistry, Chemical reaction, EXAM 2A SPRING, kj/mol nh4no3