Answer: 3.306 mmol
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

where,
Molarity
n= moles of solute
= volume of solution in ml

According to stoichiometry:
1 mole of
gives 2 moles of 
1.653 mmol of
gives =
of 
Thus number of millimoles of
are 3.306
<h2>d=density, m=mass, v=volume</h2>
1. 17.2kg=17200g
so knowing that d=m/V, use V=m/d to calculate the volume
v=17200/5.75
and then devide by 1000 to convert cm3 to dm3 and the answer will be in dm3
2. d=m/v
v=0.5l
m=425g
so use the formula and you will get d=425/0.5=850g/l
3. use d=m/v again, but not before rewriting the formula for volume: m=vd and convert dm3 to cm3
1dm3=1000cm3
so 0.987dm3 =987 cm3
now m=987cm3 * 10.5g/cm3 and the answer will be in grams
sorry, but im just learning some chemistry myself so i only know that the 1st blank is: Ph
hope you can find what the other 2 blanks are