A nucleus of Uranium-238 (m = 3.95292599x10^-25 kg) ejects an alpha particle (m = 6.64465675x10^-27 kg), transmuting into a nucleus of Thorium-234 (m = 3.88638509x10^-25 kg).
If the alpha particle is ejected to the right at 1.443x10^7m/s, determine the magnitude of the velocity
of the nucleus as it recoils to the left.
V= ? •105 m/s to the left

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

f is prop to m1xm2 double m1 double force

i think the answer would be reserve.