Chemistry, 05.07.2019 01:30 Jxsolvez

How many milligrams of iodine would be a typical amount in a 60.-kg adult?

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Answer from: donmak3833

9.03 mg

Explanation:

For this question I was supposed to make a search using the keyword "Chemical composition of the human body" and found the amount of Iodine as,

Element Atoms / 70 Kg Man

Iodine 5 × 10¹⁹

We can calculate amount of Iodine / 60 Kg as,

70 Kg Man contained = 5 × 10¹⁹ I atoms

So,

60 Kg Man will contain = X I atoms

Solving for X,

X = (60 Kg × 5 × 10¹⁹ I atoms) ÷ 70 Kg

X = 4.28 × 10¹⁹ I Atoms

Now, convert number of I atoms to Mass as,

Step 1: Calculate Moles of I,

Moles = Number of Atoms ÷ 6.022 × 10²³ Atoms.mol⁻¹

Putting value,

Moles = 4.28 × 10¹⁹ ÷ 6.022 × 10²³ Atoms.mol⁻¹

Moles = 0.00007116762 mol

Step 2: Calculate Mass of Mass:

Moles = Mass ÷ M.Mass

Solving for Mass,

Mass = Moles × M.Mass

Putting values,

Mass = 0.00007116762 mol × 126.90 g.mol⁻¹

Mass = 0.00903117141 g

Or,

Mass = 9.03 mg

Answer from: Quest

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

Answer from: Quest

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

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