the one shown in Figure 3.1. Calculate the expansion work done against a constant external pressure of 0.995 atm and at a constant temperature of 22°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas. 3.6 Calculate the work done by the reaction against of 0.995 1.00 a tempe q, w, a 3.14 2.0 a valu (a) r Zn(s) + H2SO4 (aq) → ZnSO4(aq) + H2(g) when 1 mole of hydrogen gas is collected at 273 K and 1.0 atm. (Neglect volume changes other than the change in gas volume. whe 3.1 be First Law of Thermodynamics 3.7 A truck traveling 60 kilometers per hour is brought to a complete stop at a traffic light. Does this change in velocity violate the law of conservation of energy?

4. 5. 9 6. 7. 8. 9. 10. 4 8 12 Si₂H3 + O₂ →→ FeS₂ + O₂ → Fe₂O₂ + H₂O₂ → SIO2 + K+ 11 8 2 S8 + 2 4 H₂ → Br₂ → 2 H₂O + HF >>> F₂ → 2 11 SIO2 + Fe₂O3 + Fe + 0₂ SiF4 + SF6 KBr 2 2 4 8 2 H₂O SO₂ H₂O H₂O 2 2 2 2 of 2 DELL 24 16 2 8 2 8 6 10

(1.7) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g/mL, 1.72 g/mL, 1.71 g/mL, 1.70 g/mL. If the actual value for the density of the sugar solution is 1.50 g/mL, which statement below best describes her results? O Her results are accurate, but not precise. O Her results are precise, but not accurate. O Her results are both precise and accurate O Her results are neither precise nor accurate.

A student sets up and solves the following equation to solve a problem in solution stoichiometry. Fill in the missing part of the student's equation. (0.37) 1 mL 10 109.85 g mol 2.17 mL = 7.3 mol x10 0.0 X μ 0|0 4