Compound mn decomposes to form m and n in a reaction that is first-order with respect to mn and first order overall. the half-life for the reaction is 2.3 × 10^4 s. what is the rate constant of this reaction at 25°c? mn → m + n a) 3.0 × 10^3 s b) 1.6 × 10^(–4) s^(–1) c) 3.0 × 10^(–5) s^(–1) d) 3.3 × 10^(–4) s^(–1)

Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

11) burning your hand when accidentally touching a hot plate is an example of which heat transfer? a. conduction b. convection c. radiation d. none of these