Hydroboration-oxidation of an alkene, C7H12, gives a single product that exhibits 13C spectral data below. Broadband-decoupled 13C NMR: 26.1, 26.9, 29.9, 40.5, 68.2 δ DEPT-90: 40.5 δ DEPT-135: positive peaks at 40.5; negative peaks at 26.1, 26.9, 29.9, 68.2 δ Draw a structure for this compound.

"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"

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.