How many grams of glucose c6h12o6 (ld50=30 g/kg) would be lethal to a 154 pound person

First, we need to transform pounds to kilograms. Since 1 pound is equal to 0.453592 kg, then:
154 pounds x 0.453592 kg/pound = 69.853168 kg ≈ 69.8532 kg

Grams of glucose that would be lethal to a 154 pound person is calculated using LD₅₀ value:
mass (glucose) = LD₅₀ x mass (human) = 30 g/kg x 69.8532 kg
mass (glucose) = 2095.596 g = 2.095596 kg ≈ 2.096 kg