CH\(_{2}\)
CH\(_{3}\)
CH\(_{4}\)
C\(_{2}\)H\(_{4}\)
Correct answer is C
No explanation has been provided for this answer.
0.01 mol dm\(^{-3}\)
0.05 mol dm\(^{-3}\)
0.10 mol dm\(^{-3}\)
0.50 mol dm\(^{-3}\)
Correct answer is B
No explanation has been provided for this answer.
hydrogen chloride gas was released in the reactions in both titrations
the titer values obtained from the titration are equal
the tirer value obtained by X is twice that of Y
the titer value obtained by Y is twice that of X
Correct answer is B
No explanation has been provided for this answer.
0.01 mol dm\(^{-3}\)
0.101 mol dm\(^{-3}\)
1.01 mol dm \(^{-3}\)
10.0 mol dm\(^{-3}\)
Correct answer is C
solubility( in mol/dm^3) = \(\frac{ mass of salt}{ Molar Mass of salt} = \frac{ 1000cm^3}{ volume of solution in cm^3}\)
\(\frac{14}{138 } = \frac{ 1000cm^3}{ 100}\)
\(\frac{14000}{13800} = 1.01 mol/dm^3\)
The Bohr model of the atom proposed the existence of?
the nucleus
electron shells
nucleons
neutrons
Correct answer is B
Bohr Model is a planetary model in which the negatively charged electrons orbit a small, positively charged nucleus similar to the planets .