For moles to grams would be the mole which is 7.9*10^-1 times the molar mass of argon
A(A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution)-alkaline
B(A compound that increases hydrogen ions (H+) when it is dissolved in a solution)-acid
C(An atom or molecule that has a positive or negative charge)-ion
D(<span>A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water)</span>-pH
If you search the question text (starting with "Write") you will definitely find the answer
Your answer would be C. Thermal is basically an equivalent for temperature . Hope this helps!
