When an apple is cut, it often turns brown. What does the color change indicate? Select one: a. physical and chemical changes b. chemical change only c. physical change only

Suggest a mechanism that is consistent with a second order rate law

Which shows the correct relationship? small K = positive ∆G = positive E0cell small K = positive ∆G = negative E0cell large K = negative ∆G = positive E0cell large K = positive ∆G = positive E0cell large K = negative ∆G = negative E0cell

A 0.80 L sample of gas has a temperature of 27°C and a pressure of 0.925 atm. How many moles of gas are present?

What term identified a type of reaction

Which kind of investigations never include a hypothesis? experimental systemic descriptive comparative

Which of the following requires an oxidizing agent? Al yields Al3+ 2 O yields O2 Cl2 yields 2 Cl- Ag + yields Ag

If a color change occurs when two solutions are mixed has a chemical reaction likely occurred?

Using the following thermochemical data, what is the change in enthalpy for the following reaction? Ca (OH) 2 (aq) + 2HCl (aq) → CaCl2 (aq) + 2H2O (l) CaO (s) + 2HCl (aq) →CaCl2 (aq) + H2O (l), ΔH = - 186kJ CaO (s) + H2O (l) →Ca (OH) 2 (aq), ΔH =

1. Calculate the end velocity of a rocket that traveled 16km in 2 seconds. distance time 2. Calculate the rockets acceleration m with a start velocity of 0m/s and the end velocity from #1 for 10 seconds.

How are linear and nonlinear graphs alike