
(a)
Interpretation:
The milligrams of ethanol that would be lethal to a 132 lb adult given that LD50 for ethanol is 7060 mg/kg needs to be calculated.
Concept Introduction:
Lethal dose of a substance is given by LD50which is the amount of substance the kills 50% of a target sample.
(a)

Answer to Problem 4E
Amount of ethanol that would be lethal is 423,600 mg.
Explanation of Solution
Given:
LD50 for ethanol = 7060 mg/kg
Weight of adult = 132 lb
Calculation:
Step 1: Convert 132 lb to kg
1 kg = 2.2 lb
Step 2: Calculate the mg of ethanol
(b)
Interpretation:
The number of glasses containing 13000 mg of ethanol that would be lethal to a 22lb child needs to be calculated.
Concept Introduction:
Lethal dose of a substance is given by LD50which is the amount of substance the kills 50% of a target sample.
(b)

Answer to Problem 4E
Number of glasses = 5
Explanation of Solution
Given:
Weight of child = 22 lb
Amount of ethanol per glass = 13000 mg
Calculation:
Step 1: Convert 22 lb to kg
1 kg = 2.2 lb
Step 2: Calculate the ethanol lethal dose
Step 3: Calculate the number of glasses
Chapter U4 Solutions
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