How does the electric force between two charged particles change if one particle's charge is increased by a factor of 2?
A. It is decreased by a factor of 2.
B. It is increased by a factor of 2.
C. It is decreased by a factor of 4.
O D. It is increased by a factor of 4.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.