Q. The bond dissociation energies of X, Y, and XY are in the ratio of 1: 0.5 : 1. ∆H for the formation of XY is -200 kJ mol-1. The bond dissociation energy of X, will be. (1) 200 kJ mol-1
(2) 100 kJ mol-1
(3) 400 kJ mol-1
(4) 800 kJ mol-1

Takumi works in his yard for 45 minutes each saturday. he works in the morning, and he wears sunscreen and a hat each time he works in the yard. what does takumi hope to reduce through his actions? the likelihood of stochastic effects, such as dna mutations the severity of stochastic effects, such as cancer the severity of non-stochastic effects, such as cancer the likelihood of non-stochastic effects, such as radiation sickness

Aparticle is moving around in a circle and its position is given in polar coordinates as x = rcosθ, and y = rsinθ, where r is the radius of the circle, and θ is in radians. from these equations derive the equation for centripetal acceleration.

How would you find force of the ping pong ball rolling down the track?