1) Wachusetts reservoir holds 2.46*10^11 liters of drinking water. An industrial
ID: 496839 • Letter: 1
Question
1) Wachusetts reservoir holds 2.46*10^11 liters of drinking water. An industrial accident has led to the spill of 7.5* 10^3 kg of potassium cyanide into the reservoir generating the toxic product of hydrogen cyanide
KCN+H2O-----> HCN+KOH
a) What is the concentration in w/v %
b)What is the concentration in ppm
c) The minimun LD50 is 50ppm. What volume of contaminated water would a 67 kg adult need to drink to reachthis level. Assume that the density of water is 1.00 g/mL.
d) What volume of contaminated water would a 12 kg child need to drink to reach this level?
Explanation / Answer
Q1.
a)
simply:
w/v*100% --> mass/volume * 100%:
w/v% = (7.5*10^3)/(2.46*10^11) * 100% = 0.00000304878 w/v %
b)
ppm --> mg / L
mg -->7.5*10^3 kgrams --> 7.5*10^6 grams --> 7.5*10^9 milligrams -->
ppm = (7.5*10^9)/ ( 2.46*10^11)
ppm = 0.03048
c)
he requires:
assume 67 kg --> 67000
0.03048 --> 67/0.03048 = 2198 Liters required
d)
similar:
12/67* 2198 = 393.67L
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.