Match the separation techniques with the correct descriptions. 1. Heating a solid until it passes directly from the solid phase into the gaseous phase.
2. Separating a liquid from an insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid.
3. The process of vapor returning to the solid phase without a liquid phase in between.
4. Heating a mixture to vaporize a volatile liquid component to make the remaining component dry.
5. Separating a solid from a liquid using a porous material, such as paper, charcoal, or sand, as a filter.
6. Using a solvent to selectively dissolve one or more components from a solid mixture.
A. Sublimation
B. Solids that Sublime
C. Extraction
D. Decantation
E. Evaporation
F. Filtration
Answers
Answer:
Explanation:
1 = A
Sublimation is the process where by a sample is heated to pass through solid phase to gaseous phase without the intermittent liquid phase. Example of substance that sublime is camphor.
2 = D
Decantantion
5 = F
Filtration is the process a liquid from solid using a porous material. This technique requires a set up and a good porous material eg filter paper.
6 = B
This technique is to separate a mixture of solids by converting them from solid phase to gaseous phase since they sublime.
3 = deposition.
The answer isn't in the option but deposition is the process of substance in gaseous phase to change into solid state without passing through liquid phase. Deposition is the opposite of sublimation.
4 = E
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Answers
12.40 + pOH = 14
pOH = 14 - 12.40
pOH = 1.6
[OH⁻] =
[OH⁻] =
[OH⁻] = 2.5x10⁻² M
hope this helps!
Answers
Which element is reduced?
answer: chlorine (chlorine is going from 0 on -I)
Answers
varieties of the same element, that is called an
Isotope.
Answers
If you guys are still wondering which one is right, the answer is Ni + FeO
i think it might be Ni + FeO
(2) faster and more product is produced
(3) the same and the reaction has stopped
(4) the same and the reaction continues in both directions
Answers
A chemical reaction is at equilibrium. Compared to the rate of the forward reaction, the rate of the reverse reaction is the same and the reaction continues in both directions and the correct option is option 4.
What is Chemical Equilibrium?
Chemical equilibrium refers to the state of a system in which the concentration of the reactant and the concentration of the products do not change with time, and the system does not display any further change in properties.
It is the state of a reversible reaction where the rate of the forward reaction equals the rate of the reverse reaction. While a reaction is in equilibrium the concentration of the reactants and products are constant.
Therefore, A chemical reaction is at equilibrium. Compared to the rate of the forward reaction, the rate of the reverse reaction is the same and the reaction continues in both directions and the correct option is option 4.
Learn more about Chemical Equilibrium, here:
#SPJ2
Answer:
choice 4
Explanation:
the reaction is constant but it does not stop, therefore it's choice 4
Answers
Answer: carbon dioxide, methane
Explanation:
2)Carbon dioxide