Calcium and boron react to form calcium boride, as represented by the chemical equation below.
Ca + 6 B → Cabo
Which type of reaction is shown by this equation?
A. double displacement B. single displacement
C. synthesis
D. decomposition

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?