Which of these laboratory techniques is best to separate from a liquid to recover the liquid

Answers

Answer 1

Answer: It depends on what you are separating from the liquid. If it is a solid you can just filter it or put it in a centrifuge. If it is a dissolved solvent you might need to use something like chromatography. I am not very sure though. I hope this helps. Let me know if anything is unclear.

Related Questions

If 37.4 grams of water decompose at 297 Kelvin and 1.30 atmospheres, how many liters of oxygen gas can be produced? Show all of the work used to solve this problem. 2H2O (l) yields 2H2 (g) + O2 (g)
What is the name of H2S? A. sulfuric acid B. sulfurous acid C. hydrosulfurous acid D. hydrosulfuric acid
The force most responsible for holding the nucleus of an atom together is the:
Question: Use the table to compare the solubilities of substances. Check all of the boxes that apply.Answers: Aspirin is less soluble than table salt, but more soluble than carbon dioxide. A saturated solution of table sugar is more concentrated than a saturated solution of table salt.
How much energy is required to raise 10.0 grams of water (c=4.18j/gC) by 20*C?

Cell references in a formula are called _____.

Answers

Cell references in a formula are called electrode potentials. Electrode potentials are standard voltages for half-cell potentials. All half-cell potentials use the Standard Hydrogen Electrode (SHE) as a universal reference for redox reactions. For hydrogen, the standard electrode potential is zero for all temperatures.

According to Hess’s law, if a series of intermediate reactions are combined, the enthalpy change of the overall reaction isthe difference between the enthalpies of the intermediate reactions.
the sum of the enthalpy changes of the intermediate reactions.
the product of the enthalpy changes of the intermediate reactions.
the fraction of the individual enthalpies of the intermediate reactions.

Answers

Answer : The correct option is, the sum of the enthalpy changes of the intermediate reactions.

Explanation :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

For example :

The formation reaction of CO will be,

$C(graphite)+(1)/(2)O_2(g)\rightarrow CO(g)$ $\Delta H_(formation)$

The intermediate balanced chemical reaction will be,

(1) $C(graphite)+(1)/(2)O_2(g)\rightarrow CO_2(g)$ $\Delta H_1$

(2) $CO+(1)/(2)O_2(g)\rightarrow CO_2(g)$ $\Delta H_2$

The expression for enthalpy of formation of CO is,

$\Delta H_(formation)=[n* \Delta H_1]+[n* \Delta H_2]$

where,

n = number of moles

By adding reaction 1 and reverse reaction of reaction 2, we get the enthalpy of formation of CO.

Hence, the correct option is, the sum of the enthalpy changes of the intermediate reactions.

I think the answer is B. the sum of the enthalpy changes of the intermidiate reactions

Which is true of transition metals when moving from left to right on the periodic table?The d sublevels are not filled across the period.
The cation radii become larger across the period.
Atomic radii increase slightly and then start to decrease.
Atomic radii decrease slightly and then start to increase.

Answers

The correct option is D.

Transition metals are those metallic elements that are located in the central block of the periodic table. They exhibit various valency states and they generally have various colors. The atomic radius of an element refers to the measure of the size of its atom. For transition metals, their atomic radii decrease slightly and then start to increase, when one is moving from the left to the right of the periodic table.

Answer : The correct option is, Atomic radii decrease slightly and then start to increase.

Explanation :

Transition metals : It is defined as the element whose atom is ground state or ion in one of the common oxidation states, has incomplete d-subshell.

The general trend of atomic radii of transition metals is :

Generally the atomic radii of d-block elements in a series decreases with increase in atomic number but decreases in atomic size is small after midway that means almost remains same and at the end of the period there is a slight increase in the atomic radii.

Hence, the atomic radii decrease slightly and then start to increase of the transition metals when moving from left to right on the periodic table.

The digestion process starts in the _____. A.esophagus
B.stomach
C.small intestine
D.mouth

Answers

The digestion process starts in the mouth first, with the mechanical digestion happening with your teeth. And then the saliva breaks down your food with its enzymes.

Which property is best to use when determining the strength of an ionic bond in a solid? lattice energy conductivity hardness solubility

Answers

The property best used when determining the strength of an ionic bond in a solid is:

LATTICE ENERGY

The lattice energy is the energy released during the deposition of gaseous ions of opposite charges. Deposition is the transformation of gas to solid.

Explanation:

The main types of solids are ionic, molecular, covalent, and hard. Ionic solids consist of absolutely and negatively energized ions held concurrently by electrostatic forces; the power of the bonding is indicated in the lattice energy. Ionic solids manage to have high melting points and are fairly hard. lattie energy is a stratagem of the energy received in the crystal lattice of a compound, similar to the energy that would be delivered if the element ions were produced together from infinity.

Answer:

A. lattice energy

Explanation:

What volume of silver metal will weigh exactly 10 kg. The density of silver is 10.5g/cm^3

Answers

Answer:

V=952.380952381 cm3cap V equals 952.380952381

Other Questions

If the Kelvin temperature of a gas is tripled and the volume if doubled, the new pressure will be ___. A. 3/2 the original pressure B. 1/6 the original pressure C. 5 times the original pressure D. 2/3 the original pressurethe answer isnt b or c

Calcium reacts with water. This reaction is represented by the balanced equation below. The aqueous product of this reaction can be heated to evaporate the water, leaving a white solid, Ca(OH)2(s).Ca(s) + H2O(l) ==> Ca(OH)2(aq) + H2(g)Compare the electrical conductivity of the aqueous product in the reaction to the electrical conductivity of the white solid that remains after the water is evaporated from the solution. Write the chemical name of the base produced in the reaction. State one change in reaction conditions that will increase the rate of the reaction.

The elements in the middle of the periodic table are known as:a. Noble elementsc. Transition elementsb. Heavy metalsd. Covalent elements

What is the mole ratio of NaOH to Al(OH)3