Asubstance with a high [h+ ] would likely have which additional characteristics? a high [oh– ] and a high poh a low [oh– ] and a high poh a high [oh– ] and a low poh a low [oh– ] and a low poh

Answer is "a low [OH– ] and a high pOH".

Explanation;

The given substance has high [H⁺].

Since

pH = - log [H⁺]

The substance has low pH means the substance is acidic.

If the substance is acidic, then the [OH⁻] should be low.

pOH = - log [OH⁻]

Hence, low [OH⁻] will result high pOH.

the answer is B guys

"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"