What's a suitable assumption for a simple distillation lab?​

Answers

Answer 1

Answer:

Must be stable and relatively insoluble in boiling water.

Explanation:

it must be stable and relatively insoluble in boiling water and a must-have vapor pressure in boiling water that is of the order atmosphere at or more compound satisfy these conditions that will generally not separate from each other but we'll be separated from everything else.


Related Questions

2KClO3 —> 2KCl + 302 this equation represents both a ___ reaction AND a(n) ___ reaction.

A. combustion; decomposition
B. single replacement; combustion
C. combustion; oxidation-reduction
D. decomposition; oxidation-reduction

Answers

Answer:

option D--Decomposition; oxidation-reduction

Answer: A. Combustion; decomposition

Explanation: I took it on a quiz and got it right!

If you begin with a saturated solution of sugar dissolved in water, and then you heat the solution, what type of solution will result

Answers

After beginning the experiment with a saturated solution, then increasing the heat, we will be left with an unsaturated solution.

To obtain the saturated solution, we must dissolve sugar in the water. We can say that the solution has become saturated when the solution is no longer able to dissolve more sugar. It has reached its capacity for the solute that it can dissolve in these conditions.

However, the temperature of a solution has an effect on the dissolving limit of the solution. That is, when a solution is heated it becomes able to dissolve more solute. Therefore, if we were to heat a saturated solution, it will be able to dissolve more solute and therefore will no longer be at its limit, meaning it is no longer a saturated solution. It has become unsaturated.

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What is the percentage of Aluminum in Aluminum Sulfate?

Answers

Answer:

342. 15 g/mol is the mass

Al Aluminium 26.98g 2 atoms per mole = 15.7716%

S Sulfur 32.06g 3 atoms per mole = 28.1151%

O Oxygen 15.99g 12 atoms per mole = 56.1133%

Explanation:

Hope this helps

Answer:

15,7%

Explanation:

What is the percentage of Aluminum in Aluminum Sulfate?

Aluminum Sulfate

is Al2 (SO4)3

its molar mass is

(2 X 27) + (3 X 96) = 54 + 288 = 344

THE % Al IS (54 /344) X 100 = 15,7%

PLEASE HELP ASAP 30 POINTS!!!!




Voltage ______
Question 1 options:


causes current


pushes free electrons around a circuit


is measured in Volts


all of the choices

Answers

The answer is: D - all of the above.

Explanation:

When a voltage source is connected to a circuit, the voltage will cause a uniform flow of charge carriers through that circuit called a current.

Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light.

In brief, voltage = pressure, and it is measured in volts (V).

an inexperienced student adds a solution of catalytic h2so4 and water to the alkene shown below, expecting to produce 1-cyclobutylethan-1-ol.

Answers

The rearrangement produces a more stable tertiary carbocation and the unexpected product.

In the image shown, the substrate is 1-cyclobutylethene. The attack of H2SO4 and water will lead to the conversion of the alkene to an alkanol. Two possible products may be obtained with one being greater than the other.

The unexpected product (Shown in the image attached) is obtained due to rearrangement of the carbocation intermediate. The rearrangement produces a more stable tertiary carbocation and the unexpected product.

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which ionization process requires the most energy?

Answers

Answer:

the second ionization energy

Explanation:

The second ionization energy is always larger than the first ionization energy, because it requires even more energy to remove an electron from a cation than it is from a neutral atom.

Some single-celled organisms make copies of themselves through mitosis. Which describes the function of the cell cycle in such single-celled organisms?

Answers

Answer:

mitosis?

Explanation:

Some single celled organisms make copies of themselves through mitosis

In unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell. In multicellular organisms, mitosis produces more cells for growth and repair.

What element is being reduced in the following redox reaction? Cr(OH)4-(aq) ClO-(aq) → CrO42-(aq) Cl-(aq).

Answers

The element that is being reduced in the given redox reaction is Cl (Chlorine)

The given redox reaction is

Cr(OH)₄⁻(aq) + ClO⁻(aq) → CrO₄²⁻(aq) + Cl⁻(aq)

First, we will define the terms oxidation and reduction

Oxidation can be defined as an increase in oxidation number

Reduction is defined as a decrease in oxidation number

This means the element that is being reduced in the reaction would have a decrease in oxidation number.

Oxidation number of Cr in Cr(OH)₄⁻ is +3; and the oxidation number of Cr in CrO₄²⁻ is +6. This is an increase in oxidation number and it means Cr is being oxidized.

Oxidation number of Cl in ClO⁻ is +1; and the oxidation number of Cl in Cl⁻ is -1. This is a decrease in oxidation number and it means Cl is being reduced.

Hence, the element that is being reduced in the given redox reaction is Cl (Chlorine).

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C. A - ion (negative ion, one with extra negative charge)?

Answers

Answer:

Negative ion with one extra electron.

BRAINLIST Pls

Anions are the name for ions that have a negative charge. The body contains several common chemicals as ions. Sodium, potassium, calcium, chloride, and bicarbonate are typical examples.

What are anions ?

Negatively charged electrons are called anion. When non-metals gain electrons, they are produced. They absorb one or more electrons. They have a negative charge overall as a result. The ion concentration iodide ( I- ), chloride ( Cl- ), and hydroxide are among examples ( OH– ).

The electrode where reduction takes place in any electrochemical cell  is characterized as the cathode. On the other extreme, the positive electrode will draw anions, or negative ions, to itself.

Thus, when an atom obtains electrons, it transforms into the negatively-charged ion known as an anion.

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a stone is projected horizontally with 20 metre per second from the top of a tall building calculate its position in velocity after 3 seconds neglecting the air resistance .​

Answers

Answer:

105m

Explanation:

u=20m/s

g=10m/s^2

t=3s

s=ut+1/2gt^2at

s=20*3+1/2*10*3*3

s=105m

can someone send the working and answer for this question with formulas used and all

Answers

Answer:

its letter d ..................................

Help please!!!!!!!!!!!!!!!!!!!!…

Answers

Answer:

i honestly dont know how this is showing up on my thing i am 13

Explanation:

sorry i dont know at all

How does the microscopic arrangement of particles affect the microscopic behavior of the solution?

Answers

Answer:

In a solid, the particles pack together as tightly as possible in a neat and ordered arrangement. ... With an increase in temperature, the particles gain kinetic energy and vibrate faster and more strongly. The attractive force in solids need not be stronger than in liquids or gases

a substance that can be broken down into simpler substances

Answers

Answer:

compound

Explanation:

hope this hepls

5.The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. what is the independent, dependent and controlled variables?

Answers

Independent: Gasoline with different amounts of lead Dependent: Amount of pollution produced

Question 5 (5 points)
Use the picture below to determine if the following statements are observations or if the statements are inferences. Place a “O” in the blank for an observation and “I” for an inference.


BLANK 1: A person is in the water
BLANK 2: The weather is cold
BLANK 3: The tree branch is broken
BLANK 4: If the boy crawled out of the water the goat would push him back in
BLANK 5: The boy fell off the branch

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Blank # 1 - Observation

Blank # 2 - Observation

Blank # 3 - Observation

Blank # 4 - Inference

Blank # 5 - Observation

Answer:

Numbers 1,2,3, and 5 are all O
And Number 4 is aN I

This element has an atomic number lower than aluminum and is in group 14

Answers

Answer:

that is impossible. the atomic number can only go up each group

Please help I will Mark Branlist
please justify and explain aswell

Answers

A. ionic (donates an electron to the other atom in the bond)

B. covalent (electrons are shared equally)

C. polar (unequal electronegativity)

hope this helps!

A solid magnesium flare has a mass of 1300 g and a volume of 743 cm3. What is the density of the magnesium?

Answers

Answer:

1.74 g/cm3

Explanation:

density=mass/volume

Explanation:

density = 1300/743

or density=1.74g/cm3

CORRECT ANSWER WILL BE MARKED BRAINIEST

predict the chemical formula that results when the following pairs of ions combine to form an ionic bond.

1. K+1 and S-2

2. Pb+4 and N-3

Answers

1. K2S (Potassium Sulfide)
2. Pb3N4 (lead IV nitride)

Question 1 (2 points)
Which option can be classified as a pure substance?

Question 1 options:

heterogenous mixture


solution


homogenous mixture


compound

Question 2 (2 points)
Law of conservation of mass states that:

Question 2 options:

matter is destroyed


matter does not change


matter is neither created nor destroyed


matter is created

Question 3 (2 points)
What is a property of bases?

Question 3 options:

all of the above


Sour taste


Slippery touch


Ability to form hydronium ions+

Question 4 (2 points)
Which property do solutions with low pH values have?


What does it mean to have a neutral pH? - Aseptic Health

Question 4 options:

have a -OH group


feels slippery


turns litmus paper blue


tastes sour

Question 5 (2 points)
How do the products of chemical reactions compare to their reactants?

Question 5 options:

The products often have completely different properties than the reactants.


The products are usually more toxic than the reactants.


The products usuallyhave more mass than the reactants.


The products usually have more atoms than the reactants.

Question 6 (2 points)
Which of the following is an example of a physical change?

Question 6 options:

Water freezing into ice.


A piece of wood burning.


A toy car rusting.


Zinc producing hydrogen gas when mixed with water.

Question 7 (2 points)
What might happen if you mixed a strong acid with an equally strong base?

Question 7 options:

You would see an explosive chemical reaction.


The base would destroy the acid.


You'd wind up with a pH-neutral salt and water.


The acid would destroy the base.

Question 8 (2 points)
In the equation shown, what are the reactants?

2H2+O2àH2O

Question 8 options:

Hydrogen and oxygen molecules (2H2 and O2 )


Ice crystals


Hydrogen atoms (H)


Water molecules (H2O)

Question 9 (2 points)
Which phrase most accurately describes a chemical change?

Question 9 options:

A change in form


A change in taste


A change on the molecular level


A change in appearance

Question 10 (2 points)
What does it mean when there is a physical change?

Question 10 options:

A new substance has been formed.


Matter has changed from one substance into a new substance.


Matter has changed size, shape or form


Matter has changed on the molecular level.

help pls ill give 20 points!

Answers

Answer:

1) Compound

2) Matter is neither created nor destroyed

3) All of the above

4) Turns litmus paper blue

5) The products often have completely different properties than the reactants.

6) Water freezing into ice

7) You'd wind up with a pH-neutral salt and water.

8) Hydrogen and oxygen molecules (2H2 and O2 )

9) A change on the molecular level

10) Matter has changed size, shape or form

Answer:

compoundmatter is neither created nor destroyedSlippery touchtastes sourThe products often have completely different properties than the reactants. Water freezing into ice. You'd wind up with a pH-neutral salt and water. Hydrogen and oxygen molecules (2H2 and O2 ) A change on the molecular level Matter has changed size, shape or form

Explanation:

What is the
name of the
compound
Na2Co3?

Answers

Answer:SODIUM CARBONATE

Explanation:

Which list includes only bulk properties of matter?
boiling point, strength of electrical forces, vapor pressure
kinetic energy, strength of electrical forces, vapor pressure
boiling point, surface tension, vapor pressure
boiling point, kinetic energy, surface tension

Answers

The list which includes only bulk properties of matter is: C. boiling point, surface tension, vapor pressure.

What is matter?

Matter can be defined as anything that has mass and can occupy space.

Thus, any physical object or substance that is found on planet Earth is typically composed of matter.

The three (3) states of matter:

Since all matter are made up of atoms, they have a property of existing in three (3) distinct states and these include;

SolidGasLiquid

A bulk property of matter refers to the property that affects matter as a whole and they are listed as follows:

1. Stress

2. Strain

3. Elasticity

4. Boiling point

5. Surface tension

6. Vapor pressure

In conclusion, the other list of properties are not a bulk property of matter.

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In an ionic compound, the total positive charge of all the positive ions ____ the total negative charge of all the negative ions.

Answers

Answer:

I think it would be 0 since cations and anions must always combine in such a way so that their charges cancel.

Assume trilobites went extinct 248 million years ago.
If a trilobite is found in a rock layer, what do you
know about the age of that rock layer?

Answers

Answer:

the rock layer is at least 248 million years old

Explore

If an object absorbs all the light that hits it, the object appears to be

Answers

reflective

make me brainliest pls

Complete the sentence. When a base is added to water, hydrogen ions __________.

Answers

Answer:

Explanation:

Decreases

Answer:

Hydrogen ions decrease. It reduces the concentration of ions.

Explanation:

(what is the meaning of aids?) (what is the meaning of cushions?) (name 5 citrus fruits) ( what are antibodies?) (what are hormones?)​

Answers

Answer:

Aids mean

a disease in which there is a severe loss of the body's cellular immunity, greatly lowering the resistance to infection and malignancy.

Cushions mean

a swollen floral system on which several small flowers are borne.

sweet mangogrape fruitpineapplelimelemon

What are antibodies

this is a blood protein produced in respond to an counteracting a antigen.

What are hormones

these are chemicals that the body releases during a period of time

Explanation:

During ionization, metals lose electron, this change is called?​

Answers

Ans

This is called oxidation

Explanation:

the oxidation number of a metal ion is more than the oxidation number of metal atom

which would best be categorized as heat transfer by conduction?
a.) wearing a white shirt to stay cool on a summer day
b.) warming your body under the sun in summer
c.) feeling the heat from a lightbulb with your hand when touching the bulb
d.) feeling the heat from a light bulb while holding your hand from 6 inches away

Answers

Answer:

c.) feeling the heat from a lightbulb with your hand when touching the bulb

Explanation:

In heat transfer by conduction, feeling the heat from a lightbulb with your hand when touching the bulb will be categorised as the best condition.

c.) feeling the heat from a lightbulb with your hand when touching the bulb

It is C because it is the direct transfer of heat from the lightbulb to your hand
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