Six !
Just count each element in the molecule (Since there are 4 hydrogen atoms, a carbon and an oxygen atom in this molecule of methanol.)
Answer:
A base.
Explanation:
Basic solutions give OH- ions.
Answer:- The wavelength is 
and the right option is D.
Solution:- Wavelength is inversely proportional to the frequency and the equation is:
where, 
is the wavelength, c is the speed of light and 
is frequency.
Frequency is 
and the speed of light is 
.
Since, 
So, 
Let's plug in the values in the equation:
Hence, the right option is D) .
Calculate the H positive from the pH equation: pH equals -log (H positive). This would be 10 to the -6.49. Let's call the acid HA. To calculate Ka in this equation, Ka equals H positive times A- over HA. HA is going to be the 0 0121. So, Ka=(10^-6.49)^2/0.0121. This equals 1.05*10^-13/0.0121. Ka then equals 8.65*10^-12.
