Astudent performs a kinetic experiment on the first-order kinetics of the reaction: n2o42no+o2. she calculates the first-order decomposition of the reactant using the relationship: [n2o4]t=[n2o4]0e-kt using the first-order rate constant k = 0.750 s-1 and the following data: initial mass of n2o4: 25.7  0.3 g, initial volume of n2o4: 0.22 0.01 l, and time t = 3.8  0.2 s. use error analysis to calculate her reported concentration of n2o4 including the range of uncertainty.

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

What human activity increases beach erosion?