Answer to Question #294065 in General Chemistry for Sarah

Question

c) One pack of chips weighing 140 g contains 2.5% salt. Decide if Barborka was right that by eating two such packs of chips, the 65-kilogram Samo would exceed the recommended daily dose of salt.  (The recommended daily dose is 100 mg per 1 kg body weight)

Potassium iodate is most often used to iodide table salt. The weight fraction of potassium iodate in table salt is 0.006%. 0.59 g of iodine is contained in 1.00 g of potassium iodate. 

e) Calculate how much g of salt Samo needs to eat to cover his daily iodine requirement. Assume that Samo does not receive iodine from other sources, only through iodized table salt.

Answer 1

If One pack of chips weighing 140 g contains 2.5% salt. then;

2.5/100 × 140= 3.5g

If takes 2 packs that is 7 g of salt= 7000mg

For his weight he is supposed to consume 6500mg

Hence he exceeded