600cm-3
800cm-3
1,000cm-3
3,600cm-3
4,000cm-3
Correct answer is D
\(400cm^{3} \to 2moldm^{-3}\)
\(0.4 dm^{3} \to 2moldm^{-3}\)
Multiplying in order to get the moles of the acid.
\(0.4dm^{3} \times 2moldm^{-3} = 0.8moles\)
After diluting to \(0.2moldm^{-3}\), the new volume will be
\(\frac{0.8}{0.2} = 4dm^{3}\)
Converting back to cm^3,
We have \(4 \times 1000cm^{3} = 4000cm^{3}\)
Hence, the volume of water added = \((4000 - 400)cm^{3} = 3600cm^{3}\)
The following gases decolorize bromine water except
C2H6
C2H4
C2H2
C3H4
C3H6
Correct answer is A
No explanation has been provided for this answer.
Stirring the mixture vigorously
Adding more calcium chloride solution
lncreasing the concentration of the ethanedioic acid
Adding concentrated hydrochloric acid
Adding some distilled water
Correct answer is D
No explanation has been provided for this answer.
group lV elements
group l metals
transition metals
alkaline earths
the halogens
Correct answer is C
No explanation has been provided for this answer.
0.005 mole
0.025 mole
0.05 mole
1.00 mole
1.05 mole
Correct answer is C
No explanation has been provided for this answer.