Neurotransmitters are molecules that are released by nerve cells to other cells in our bodies, and are needed for muscle motion, thinking, feeling, and memory. Dopamine is a common neurotransmitter in the human brain. (c) Experiments with rats show that if rats are dosed with 3.0 mg/kg of cocaine (that is, 3.0 mg cocaine per kg of animal mass), the concentration of dopamine in their brains increases by 0.75 mM after 60 seconds. Calculate how many molecules of dopamine would be produced in a rat (average brain volume 5.00 mm3) after 60 seconds of a 3.0 mg/kg dose of cocaine.

Video transcript

Hey everyone. So here we have serotonin. I gave him 1.5 mg per kilogram of a new drug And showed an increase in Serotonin in their brains for a 0.35 million Mueller. After five minutes. You ask how the molecules of serotonin produced an amount of time. Right? Spring was measured to be 4.5 mm, cute. All that clarity. It was small of the solid talk about leaders of the solution. So we need to first convert the volume from millimeters cube to leaders. You know that one testing meter? You there's one leader, We know that one dusting meter was 12 4.5 millimeters cute. One decimate er To and this is cute. And then one later one decimal cube. This gave us 4.5 I'm Simpson -6 leaders. So now I need to convert the malaria from milan moler to moler. We know that one more. It was 1000 millie Mueller. So 0.35 billy Mueller. And in one bullet We have 1000 millie muller We're gonna get 3.5 Constant to -4 smaller the similarity in the bottom to find the malt of serotonin 50. um sentence before smaller people's ex By the volume which is 4.5 Constantine -6 leaders Gonna get 3.5 I'm sent to negative four smaller. That's 4.5 I'm sensing negative six leaders able to x x It was 1.58. I'm sente -9 malls. Then we're going to convert from most of serotonin to molecules With 1.58. I'm Centenary of nine malls. And in one mall I have 6.022 I'm center 23rd molecules. We're gonna get 9.5 Times 10 to molecules. Thanks for watching my video and I hope it was helpful.