break down food into smaller molecules the body can use; absorb molecules into blood and carry them throughout the body; eliminate wastes from the body
Answer:
40 g/mL
Explanation: i did it and got it right
1. 50Hz x .10m = 5 m/s
2. 20 m/s divided by .50m = 40Hz
3. 80 m/s divided by .20m = 400Hz
4. 120 m/s divided by .40m = 300Hz
5. 340 m/s divided by 440Hz = .77m
First let us calculate the number of moles:
number of moles = 0.500 g / (180 g / mol) = 2.78 x 10^-3
mol
From Avogadros number, we know that there are 6.022 x
10^23 molecules per mole, therefore:
number of molecules = 2.78 x 10^-3 mol * (6.022 x 10^23
molecules / mole)
<span>= 1.67 x 10^21 molecules</span>
1s2 2s2 2p6 3s2 3p6 3d1 = 19e- so it should be Potassium (K)