In a basic solution, the concentration of OH- is greater than the concentration of H+. The pH will be greater than 7.
In an acidic solution, the concentration of H+ is greater than the concentration of OH-. The pH will be less than 7.
The correct answer is a. concentration of OH- > concentration of H+
Group 12 Elements have two valence electrons while Group 13 Elements have three valence electrons.
Number of valence electrons tend to determine factors like reactivity. So elements with different number of valence electrons will have different properties.
That is why G12 and G13 have different properties
The only list containing molecules is list #4
NaCl, N2, and H2O are all made up of more than one element, making them molecules. The other lists contain an element. Mg, He, and Fe are elements, not molecules.
Hope this helps!
Option B is the correct answer
<span>Water has a Mol.mass of 18g/mol. (2 x 1:H) + (1 x O:16) = 18.
Mass / mol.mass = moles.
3.45g / 18g/mol. = 0.192 moles of sweat.
0.192mol. x 44.0kJ/mol = 8.43kJ of heat released from the body.</span>