Colored dyes are really bad for you but I drink them anyways
POh is calculated by the negative logarithm of hydroxide ions concentration. From the given value, we have:
<span>pOH = -log(8.6 x 10 ^-5)
</span><span>pOH = 4.07
</span><span>
To calculate the pH we use the relation of pOH and pH, expressed as:
</span><span>
14 = pOH + pH
</span><span>pH = 14 - 4.07 = 9.93
</span><span>pH = -log [H+]
</span><span>[H+] = 10^-9.93 = 1.16 x 10^-3 M</span>
Answer:
you will need to work out how many moles are in NH3, to get this you divide the mass by NH3's RMM (relative molecular formula) [14+(3x1)=17]
5.00/17=0.294 moles
so now that you've got the moles to get molecules you need to times the moles by avargado's constant 6.022x10^23
the rule is that one mole of compound containes 6.022x10^23 molecules
so now you times your moles of NH3 (0.294) by avargados constant
0.294 x 6.002x10^23 = 1.765x10^23
just to clarify thats 1.765 times ten to the power of 23