Distillation works by isolating compounds with different boiling points. Filtration can only separate heterogeneous mixtures. Centrifugation can often separate colloids and suspensions. Chromatography uses capillary action to separate differently-colored compounds. Titration tells you the concentration of an acid or base. Hope this helps!
Answer:Butane > ethane > methane, because between bigger molecules there are stronger van der Waals forces and also higher molar mass means they need to be given more energy to have enough kinetic energy to move quickly, freely in gas.
There are multiple butene isomers (Butene) and some (2-Butenes - cis and trans) actually have higher boiling point than n-Butane (there is also Isobutane, of course, with quite much lower boiling point than all of them) and some (1-Butene, Isobutylene) have lower, so this isn't really a fair or simple question. But on simplest level, it can again be said that 1-butene has lower boiling point because it has very similar shape but slightly lower molar mass (2H less) than n-butane.
Explanation:
It has zero dipole moment. Two N atoms in nitrogen molecule have zero electronegativity difference. The bond pairs of electrons are equally distributed between two N atoms.
Given that acids burns and the reactions of some metals with acids are violent, you have to protect agains spills and splashes that can seriously harm you: your eyes, your hands, your arms, your feet, even your clothe.
So you shall use:
- Safety glasses (googles)
- Chemical gloves
- Lab coat
- Closed shoes
This rock is balanced by roots on the ground that are very strong
