Suppose to you want to prepare a buffer with a pH of 6.5 and you have a choice of using different components of two acids: Tartaric acid (C4H6O6) is a diprotic acid with pKa1 = 3.00 and pKa2 = 4.35 Maleic acid (C4H4O4) is a diprotic acid with pKa1 = 1.95 and pKa2 = 6.23 Which components should you use to make the most effective buffer with a pH of 6.5

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

12 is it do you think so

no starving yourself won't it will make you lose more weight what you need to do is find out what foods make you gain weight like bread and meats with fat on