A small-sized woman has 6.4 x 10-3 moles of hemoglobin (molar mass of hemoglobin = 64, 456 g/mol) in her blood. Show your work How many hemoglobin molecules are in this person’s body?
What is the mass (g) of hemoglobin molecules in this person’s body?

412.52 g

Explanation:

64456 x 6.4 x 10^-3 = 412.5184

Tip: Look at the units and figure out the equation needed to find the answer

Explanation:

Interesting question - especially if you are afflicted by something like Leukemia where it pays to know everything you can about Hemoglobin.

Molecules

1 mole of anything has 6.02 * 10^23 in this case molecules

6.4*10^-3 moles has x number of molecules

Set up the proportion

1/6.4*10^-3   =  6.02 * 10^23 molecule / x          Cross Multiply

x = 6.4*10^-3 * 6.02 * 10^23

x = 3.853*10^21 molecules

Mass Hemoglobin

1 mol of hemoglobin is 64456 grams

6.4*10^-3 moles = x grams                                  Cross multiply

x = 64456 * 6.4*10^-3

x = 412.5 grams of hemoglobin in this woman's body.

If you are American and think in pounds, then this is roughly a pound of hemoglobin.

Considering that you need hemoglobin to carry oxygen around to various organs, it is not an awful lot. That's the miracle of the human body.

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

the answer is barium and copper bromide