Which of the following pairs of molecules form hydrogen bonds?
C\(_{2}\)H\(_{5}\)OH and CH\(_{3}\)OH
CH\(_{3}\)OH and H\(_{2}\)
H\(_{2}\)S and CH\(_{4}\)
NH\(_{3}\) and SO\(_{2}\)
Correct answer is A
In alcohols the hydrogen bond is formed due to the covalent bonds between one oxygen atom and one hydrogen atom in the hydroxyl group (O—H).
x > y > z
x < y < z
x = y= z
x < z < y
Correct answer is C
No explanation has been provided for this answer.
3.01 x 10\(^{20}\)
3.01 x 10\(^{27}\)
6.02 x 10\(^{19}\)
6.02 x 10\(^{27}\)
Correct answer is C
No explanation has been provided for this answer.
Protons and electrons are called fundamental particles because they----------
are indivisible
have different charges
are the lightest particles
are found in all matter
Correct answer is D
No explanation has been provided for this answer.
The region around the nucleus where electrons can be located is called?
a spectra
an orbital
a quanta
a field
Correct answer is B
No explanation has been provided for this answer.