I bottle:
250 * 150mg = 37500mg
If 37500mg ------- cost ------- <span> $2.95
so 1mg ------- cost ------- x
x = 1mg*</span> $2.95 / 37500mg = $7,87*10⁻⁵
II bottle
125 * 200mg = 25000mg
If 25000mg ---------- cost ---------- <span>$3.50
so 1mg ---------- cost ---------- x
x = 1mg* </span>$3.50 / 25000mg = $0,00014=$1,4*10⁻⁴
$7,87*10⁻⁵ < $1,4*10<span>⁻⁴
</span>
1st bottle is better bargain cause 1mg of aspirin its cheaper than in 2nd.
Answer:
2.4E-4
Explanation:
Hello,
By applying the following mass-mole relationship, the concentration could be computed as follows (assuming molarity as long as it isn't specified), since in the silver carbonate two silver molecules are present:
![[Ag]=1.2x10^{-4}\frac{molAg_2CO_3}{L} *\frac{2mol Ag}{1 mol Ag_2CO_3}=2.4x10^{-4}\frac{mol Ag}{L}](https://tex.z-dn.net/?f=%5BAg%5D%3D1.2x10%5E%7B-4%7D%5Cfrac%7BmolAg_2CO_3%7D%7BL%7D%20%2A%5Cfrac%7B2mol%20Ag%7D%7B1%20mol%20Ag_2CO_3%7D%3D2.4x10%5E%7B-4%7D%5Cfrac%7Bmol%20Ag%7D%7BL%7D)
Best regards.