If 500 ml of air contains 2 x 10^22 particles (atoms and molecules), how many particles do you inhale in one day if you breath 15000 l of air?

a. 2 x 10^22
b. 6 x 10^26
c. 1.2 x 10^27
d. 5 x 10^24

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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