Answered

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The LD50 for arsenic in humans is 13mg/kg. Which of the following approaches should be used to
calculate the number of grams of arsenic it would take to reach the LD50 in a 140-pound person?

Sagot :

Answer:

B

Explanation:

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dsdrajlin

It would take 0.827 g of arsenic to reach the LD50 in a 140-pound person.

The lethal dose 50 (LD50) for arsenic in humans is 13 mg/kg.

What is the LD50?

LD50 is the amount of a material, given all at once, which causes the death of 50% of a group of test animals.

To calculate the number of grams of As that it would take to reach the LD50 in a 140-lb person, we need to convert 140 lb to kg using the conversion factor 1 lb = 0.454 kg.

140 lb × 0.454 kg/1 lb = 63.6 kg

The LD50 of As is 13 mg of As per kg of body mass. The mass of As to reach the LD50 in a 63.6-kg is:

63.6 kg BM × (13 mg As/1 kg BM) × (1 g As/1000 mg As) = 0.827 g As

It would take 0.827 g of arsenic to reach the LD50 in a 140-pound person.

Learn more about LD50 here: https://brainly.com/question/8136561

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