The equation for the chemical reaction shown is not balanced. what number should replace the question mark to balance this equation?
2kbr + ? pb(no3)2 → 2kno3+ pbbr2
a.
the equation is balanced as is.
b.
a 6 is required.
c.
a 3 is required.
d.
a 2 is required.

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

Which is an example of an exothermic process?

Which factor listed below most likely results in the loss of genetic variation from small populations? question 2 options: mutation migration genetic recombination genetic drift