A) calculate the average density of the following object (assume it is a perfect sphere). show all your work (formulas used, numbers plugged in with proper units, and clearly indicate your final answer). mass=1.3x1022kg, diameter=2300km b) (extra credit problem) working calculate the mean radius of the following object (if it was a perfect sphere). density=687kg/m3, mass=5.68x1026kg

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What material does not melt at any temperature