How many micrograms of iron were in the 6.0 ml sample of greg's blood?

1 ml of blood contains 0.5 mg of elemental iron

Therefore, 6.0 ml of a blood sample will contain: (6.0 ml * 0.5 mg)/1.0 ml = 3.0 mg

1 mg = 1000 micro gram

therefore: 6.0 ml of blood will contain 3 * 10^3 micrograms of iron

The answer is that in 6mL of blood there are 3,000 micrograms of elemental iron.

Explanation:

Hello!

Let's solve this!

The data we have are:

6mL of blood

every 1 mL of blood there is 0.5 mg of elemental iron

mg elemental iron: (0.5mg / 1mL) * 6mL = 3mg

As we are asked for micrograms, we know that 1mg = 1000micrograms

micrograms of elemental iron = 3mg * (1000micrograms / 1mg) = 3000micrograms

The answer is that in 6mL of blood there are 3,000 micrograms of elemental iron.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72