PhSCH=CHCH2SPh is the chemical formula for diphenylthiocarbazone, a compound commonly used in analytical chemistry as a chelating agent to determine metal ions.
Diphenylthiocarbazone, also known as dithizone, is a yellow to orange powder that is soluble in organic solvents such as chloroform and benzene. It is a chelating agent that forms stable complexes with metal ions, particularly with heavy metals such as mercury, lead, and cadmium.
This property makes it useful in analytical chemistry for the detection and quantification of metal ions in solutions. The complex formed between dithizone and a metal ion has a distinctive color that can be measured spectroscopically, allowing for precise determination of the metal concentration.
The formula for dithizone, PhSCH=CHCH2SPh, indicates that it contains two phenyl groups, a thione functional group, and a carbazone functional group.
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The half-life of thorium-232 is 14 billion years. A rock with 50% of its thorium-232 remaining is: 3. 5 billion years old. 14 billion years old. 28 billion years old
Answer: 28 billion
Explanation: To get the age of the rock, the half-life of thorium-232, which is 14 billion years, is to be multiplied to the number of half-lives it has passed. The answer is 28 billion.
How will you increase the solubility of a gases in a liquid solvent?
A. Decrease the Temperature
B. Decrease the Pressure
C. Increase the Temperature
D. Increase the Pressure
Answer:
increase the temperature
Explanation:
The solubility of a gas in a liquid will increase if: Lower the temperature of the solution , and therefore, lower the kinetic energy of the gaseous particles so they can escape the liquid phase less often.
The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state. Before the change, the atoms are close together and cannot slide past one another. After the change, the substance can fill its container.
A diagram has a triangle at center with gas on top, liquid on bottom right, solid on bottom left. An arrow from gas to liquid is labeled O, and an arrow from liquid to gas is labeled N. An arrow from solid to liquid is labeled P, and an arrow from liquid to solid is labeled Q. An arrow from solid to gas is labeled L, and an arrow from gas to solid is labeled M.
Which arrow represents the change of state described above?
The arrow that represents the change of state that has been described is L.
What are the states of matter?We know that there are three states of matter of matter and these are the solid, the liquid and the gas. We know that in the solid state, the particles that compose matter are all joined together and they are held in fixed positions and can not be able to slide past one another.
As such, we have been shown the diagram that shows the way that the energy is transferred between the states of matter in the image that is attached to this answer.
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Answer:
Its A
Explanation:
I got it right
Which of the following is a nonrenewable energy source? O A. Solar B. Hydroelectric C. Natural gas D. Biomass
Answer:
C. natural gas
Explanation:
Solar comes from the sun, which if it became nonrenewable, we would be dead. hydroelectric comes from water and Dams, which water is reproduced through rain. Biomass are things like leaves, which are seasonally reproduced.
CO2 + H2O + C6H12O6 +02
Answer:
6CO2+6H2O->C6H12O6+6O2
Explanation:
CO2+H2O+C6H12O6+O2 This wrong when you write a formula. Don't savage the given question. caused it will affect the same answer.
It will write as this CO2+H20->C6H12O6+O2
So, Think what will you use the numbers in a side of chemical formula/name I am using the "eyes to eyes "caused you need to it properly. If you are not good at it use other method calculate each chemical name example. we have C=1,O=2 then, H=2,O=1 and they other side goes to the arrow is C=6 H=12O=6 ,O=2 I will think what number will make it balance for them and what is lucking see in the my answers what I add in the equation think carefully I didn't change or erase a number of them. Caused it is wrong if you do that. Thank you
Al + NaOH + H₂O
NaOH + Al₂O3+H₂
Answer:
(o) Al + NaOH + H2O -NaAlO2 + H2.
When aluminum oxide Al 2 O 3 reacts with sodium hydroxide solution, it forms sodium aluminate and water H 2 O . This reaction takes place at a temperature of 900 - 1100 ° C
According to this balanced equation, how many grams of water (H₂O) form in this reaction? KOH 56.11 g HCI 36.46 g A. 167.12 grams OB. 94.20 grams C. 54.90 grams OD. 18.02 grams KCI 74.55 g H₂O ? SUBMIT
Consider the two‑step synthesis of 2‑hydroxy‑2,4‑dimethylpentanoic acid using the reagents provided
The two step synthesis 2‑hydroxy‑2,4‑dimethyl pentanoic acid of involves compounds as represented in the attached image.
Two step synthesis of organic compoundsFrom the task content:
It therefore follows that the Starting compound A and intermediate compound B are as represented in the attached image.
Compound A is 4-methyl pentan-2-oneRemarks: The reagents provided are, H3O, Potassium cyanide and Hydrogen cyanide.
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Describe one way that grazing animals, such as bison or cattle, help to maintain grassland ecosystems.
Answer:
They fertilize the land and help with overgrowth.
Explanation:
The one way that grazing animals help to maintain grassland ecosystems is: It enhance the plant to grow.
Ecosystems enables both living organisms such as animals and non living organisms such as plant to communicate with one another in an environment.
Grazing animals is essential as it help to maintain the grassland ecosystems by quicken and boosting the growth of plant which inturn help to maintain a very healthy and sustainable ecosystems.
Grazing lead to the restoration of habitat as it help to restore back any form of damaged that occur to the natural resources of ecosystems.
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Which substance is a binary acid?
1,)hydrochloric acid
2.)phosphoric acid
3.)nitrous acid
4.)sulfuric acid
Answer:
1. Hydrochloric acid
Explanation:
Hydrochloric acid
Answer:
4)
Explanation:
formula:H2 SO4
there are 2 H+ ions in 1 molecule of sulfuric acid
thus it has a basicity of 2
Is paper a pure substance or a mixture and is it an element or compound then is it homogenous or heterogenous Thank you!!
Which sentence explains why gases can change volume but liquids cannot?
A. Gravity affects liquid atoms more than gas atoms.
B. The forces holding atoms together are stronger in a liquid than in
a gas.
O c. The forces holding a liquid together are more flexible than those in
a gas.
D. Liquid atoms are more like solid atoms than gas atoms.
Answer:
B. The forces holding atoms together are stronger in a liquid than in
a gas
I hope that this helps!
nine and ten im stuck on them
energy extraction and the complete oxidation of foodstuffs requires three stages. the energy extracted from fuels is converted to atp. select the statements that are true for the different stages required for energy extraction and complete oxidation of foodstuffs. in the first and second stages the majority of atpatp needed for cellular processes is produced. in the first stag
The energy extracted from fuels is converted to ATP. in the first and second stages, the majority of the app needed for cellular processes is produced. in the first stage: True statement, in the third stage, is the fuel molecule.
Adenosine triphosphate (ATP) is the supply of strength for use and garage on the mobile degree. The structure of ATP is a nucleoside triphosphate, along with a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate agencies.
ATP is able to power mobile strategies by shifting a phosphate group to some other molecule (a process referred to as phosphorylation). This transfer is done by way of special enzymes that couple the release of electricity from ATP to mobile activities that require energy.
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The statements that are true for the different stages required for energy extraction and complete oxidation of foodstuffs are options D, e, and C.
An oxidation reaction occurs. Oxidation also can be described as the procedure of the elimination of hydrogen from the reactant species. Oxidation is the process of losing electrons by using a molecule, atom, or ion.
The oxidation of magnesium entails the chemical response between magnesium metallic and oxygen to shape magnesium oxide. Redox is a kind of chemical reaction wherein the oxidation states of substrate trade. Oxidation is the loss of electrons or a boom inside the oxidation country, likewise, the discount is the gain of electrons or a lower inside the oxidation nation.
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Disclaimer:- your question is incomplete, please see below for the complete question.
Energy extraction and the complete oxidation of foodstuffs requires three stages. The energy extracted from fuels is converted to ATP.
Select the statements that are true for the different stages required for energy extraction and complete oxidation of foodstuffs. In the first and second stages the majority of ATP needed for cellular processes is produced.
a. In the third stage, fuel molecules are completely oxidized to CO2, and a small amount of ATP is produced.
b. In the third stage, fuel molecules are completely oxidized to CO2, and most of the ATP needed for cellular processes is produced.
c. In the third stage, fuel molecules are completely oxidized to CO2, and no ATP is produced.
d. In the first stage, macromolecules are converted to monomers, and a small amount of ATP is produced.
e. In the second stage, monomers are broken down, and a small amount of ATP is produced.
treating an amide with excess lialh4, followed by water, will produce a(n) . select answer from the options below
Treating an amide with excess LiAlH4, followed by water, will produce an amine.
Let's understand this in detail:
1. LiAlH4 is a reducing agent used in organic chemistry. It reduces functional groups like carboxylic acids, esters, and ketones to their respective alcohols.
2. Amides are molecules that include nitrogen and are derived from carboxylic acids. When carboxylic acids react with ammonia, the amide's nitrogen-containing functional group (-CONH2) is formed. It is one of the most common functional groups in organic chemistry. It includes a carbonyl group with an amine or ammonia. They can be synthesized from the reaction of carboxylic acids with ammonia or amines.
3. The reduction of amides to amines is also possible with LiAlH4, but the reduction is usually carried out in two steps. Firstly, the amide is converted to an intermediate carbamate with LiAlH(O-t-Bu)3; then, it is further reduced to the amine with excess LiAlH4. This procedure has been developed for the selective reduction of secondary amides to their respective amines.
LiAlH4 is used to reduce the carbonyl group of an amide to an amine. This reaction requires a two-step process. In the first step, the carbonyl group is reduced to an intermediate carbamate, which can then be converted to an amine in the second step by reacting it with excess LiAlH4. After reduction, the amide is transformed into an amine.
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Asexual reproduction results in two organisms with
Responses
the same DNA.
different DNA.
different parents.
the same parents.
PLEASE HELP FASTT !!
Asexual reproduction results in two organisms with the same parent and the same DNA.
Asexual reproduction produces offspring which are genetically identical to the parent because the offspring are all clones, that is, identical copies of the original parent.
Asexual reproduction in animals occurs through various process such as fission, fragmentation, budding and parthenogenesis. A single individual can produce offspring asexually and large numbers of offspring can be produced quickly with asexual reproduction.
A new potato growing from an old potato can be an example of asexual reproduction. Variation is not possible or significantly reduced in asexual reproduction. Asexual reproduction results in offspring with the same combination of genetic information as the parents.
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When comparing bromine to chlorine, bromine has
A. Fewer protons in its nucleus.
B. A weaker effective nuclear charge
C. More valence electrons
D. More electron shielding
Explanation:
I'm pretty sure the answer is D
Identifying isotopes helpp
Isotopes are any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.
In an atom, there are three components called subatomic particles as follows:
ProtonElectronNeutronIn a neutral atom, the number of protons, which is the atomic number, equate the number of electrons.
According to this question, the transparent subatomic particle inside the atom's nucleus is proton while the blue colored particle is the neutron.
In atom A, there are 3 protons, hence the atomic number of atom A is 3. However, in atom B, the number of protons and neutrons are 4 and 3 respectively, hence, the mass number i.e. protons + neutrons is 7.
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examples of fossil fuels (contain stored carbon)
Fossil fuels are formed over millions of years from the remains of dead plants and animals that have been buried under layers of rock and sediment.
These fuels contain stored carbon that was originally absorbed by the plants and animals during their lifetime. Examples of fossil fuels include coal, oil, and natural gas. When these fuels are burned for energy, the carbon is released into the atmosphere in the form of carbon dioxide, which contributes to climate change. Natural gas is a combustible mixture of hydrocarbons and other organic compounds that is found beneath the Earth's surface. Coal is a non-renewable fossil fuel that is used to generate electricity and heat, and is also used in the production of steel, cement, and other industrial products.
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what is a Chromosphere
Answer:
The area of a star's atmosphere between its photosphere and corona, such as that of the sun, is referred to as its chromospheric region
how many mercury atoms are contained in 0.37 moles of mercury?
Please help me in Q3 it’s not understandable to me
Answer:
A- mixture
B- element
C- compound
Explanation:
A mixture is composed of two or more substances. Since it is not entirely homogeneous throughout, then it can not melt or boil at a fixed temperature.
An element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. This describes substance B.
A pure chemical element has a fixed melting and boiling point.
A compound is composed of one or more chemical elements. A compound may be broken down into its components by certain processes.
On a camping trip, Marta roasts a marshmallow in the campfire. The marshmallow grows, and then turns black.
Marta notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What
change has taken place, and how does Marta know?
A
a chemical change because the marshmallow changed in taste, color and smell
B
no change because the marshmallow is not a new substance
с
only a physical change because the marshmallow changed size
D
a chemical change because the marshmallow only changed in pH level
Answer:
the answers for the quiz are;
1: A. appearance, composition
2: C. they link up in different ways
3: A. Shape
4: B. false
5: C. a chunky solid formed from two liquids combining
6: B. honey dissolving in tea
7: C. a red candy dissolves and turns water pink
8: liquid water becoming steam
9: D. A substance has changed chemically
10: A. a chemical change because the marshmallow changed in taste, color and smell
Explanation:
On the roasting of marshmallows, a chemical change takes place which changed their taste, color, and smell. Therefore, option (A) is correct.
What is the chemical change?A chemical change is a type of change in which the molecular composition is altered and a new substance is formed is known as a chemical change.
The changes are irreversible and permanent in chemical change. The mass of the substance is altered by adding or removing it during a chemical change.
During a chemical change, there is an energy difference in the breaking of old bonds and the formation of new bonds.
When marshmallows are roasted, a chemical change takes place. The heat causes a chemical reaction producing water molecules, which evaporate and leave carbon behind.
The marshmallow swells as the moisture inside expands, which causes the marshmallow to swell. when the moisture expands, it forms tiny holes in the marshmallow, which offer the moisture to escape as steam.
Then, the carbon present in sugar burns with the oxygen in the air. The blackened part of the marshmallow is the roasted carbon which changes the marshmallow's color.
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Write the formula for the conjugate base of each acid.
The conjugate base of an acid can be formed by removing a proton (H+) from the acid molecule. The formula for the conjugate base of an acid is determined by the acid's molecular formula.
For example, the conjugate base of hydrochloric acid (HCl) is chloride ion (Cl-), which can be represented by the formula Cl-. The conjugate base of acetic acid (CH3COOH) is acetate ion (CH3COO-), which can be represented by the formula CH3COO-. Similarly, the conjugate base of sulfuric acid (H2SO4) is sulfate ion (SO42-), which can be represented by the formula SO42-. In general, the formula for the conjugate base of an acid is the acid's formula with the loss of a proton (H+).
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Which object has the greatest inertia
Answer:
D
Explanation:
lighter objects have higher inertia
How many moles of KNO3 are in 500.0 mL of 2.0 M KNO3?
There is 1.0 mole of KNO₃ in 500.0 mL of a 2.0 M KNO₃ solution.
To determine the number of moles of KNO₃ in 500.0 mL of a 2.0 M KNO₃ solution, we need to use the equation:
moles = concentration (M) × volume (L)
Since 1 liter is equal to 1000 milliliters, we divide 500.0 mL by 1000 to get 0.5 L.
Next, we substitute the values into the equation:
moles = 2.0 M × 0.5 L
The concentration of 2.0 M indicates that there are 2.0 moles of KNO₃ in 1 liter of the solution. Therefore, multiplying the concentration (2.0 M) by the volume (0.5 L) gives us the number of moles of KNO₃:
moles = 2.0 M × 0.5 L = 1.0 mol
Hence, there is 1.0 mole of KNO3 in 500.0 mL of a 2.0 M KNO₃ solution.
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PLEASE ANSWER ASAP
*Will mark *25 points
Question 5 of 5
The Monroe Doctrine changed the United States' role in the world by:
O A. allowing the country to control a huge number of colonies around
the world.
O B. increasing the country's power to influence political decisions in
Europe.
C. giving the country a larger role in protecting other countries in the
Americas.
D. forcing the country to use its military to support all democratic
revolutions.
Answer:It is C i got it correct
Explanation:
Answer:
C. giving the country a larger role in protecting other countries in the
Americas.
Explanation:
CAN U GUYS HELP ME THIS WAS DUE LAST WEEK AND IM FAILING CHEM PLS HELP
a. What is the molecular geometry of the compound? (1pt)
b. Is the molecule polar or nonpolar? (1pt)
c. What are the 2 reasons that the molecule is either polar or nonpolar? (2pt)
Answer:
Sry man wish I knew trust me tho you should go over it with your parents just let them know that your struggling and maybe they will go over it and help you get a better understanding of it also try asking an older sibling but yeah good luck with that have a good night!
Explanation:
Part 1: Predict which compound in each pair is more acidic. Explain your answers
. a) cyclopentanol or 3-clorophenol
b) cyclohexanol or cyclohexantiol
c) cyclohexanol or cyclohexanecarboxylic acid
d) 2,2-dichlorobutan-1-ol or butan-1-ol
Part 2: Predict which compound in each group is more soluble in water. Explain your answers.
a) butan-1-ol, pentan-1-ol or propan-2-ol
b) chlorocyclohexane, cyclohexanol or cyclohexane-1,2-diol
c) phenol, cyclohexanol or 4-methylcyclohexanol
(1a) 3-Chlorophenol is more acidic than cyclopentanol (chlorine atom electron-withdrawal). (1b) Cyclohexanecarboxylic acid is more acidic than cyclohexanol (stronger carboxylic acid group).
(2a) Propan-2-ol is more soluble in water than butan-1-ol and pentan-1-ol (hydrogen bonding ability). (2b) Cyclohexanol is more soluble in water than chlorocyclohexane (hydroxyl group enables hydrogen bonding).
Part 1: Comparing Acidic Strength
a) 3-chlorophenol is more acidic than cyclopentanol. This is because the presence of a chlorine atom in 3-chlorophenol can stabilize the negative charge on the phenoxide ion through inductive and resonance effects, making it more stable and easier to form.
b) Cyclohexanecarboxylic acid is more acidic than cyclohexanol. The carboxylic acid group (-COOH) is a stronger acid functional group compared to the hydroxyl group (-OH) present in cyclohexanol.
c) 2,2-dichlorobutan-1-ol is more acidic than butan-1-ol. The presence of the electron-withdrawing chlorine atoms in 2,2-dichlorobutan-1-ol enhances the acidity by stabilizing the negative charge on the alkoxide ion formed upon deprotonation.
d) Cyclohexanecarboxylic acid is more acidic than cyclohexanol. The carboxylic acid group (-COOH) is a stronger acid functional group compared to the hydroxyl group (-OH) present in cyclohexanol.
Part 2: Comparing Solubility in Water
a) Propan-2-ol is more soluble in water than butan-1-ol and pentan-1-ol. Propan-2-ol has a hydroxyl group (-OH) that can form hydrogen bonds with water molecules, increasing its solubility.
b) Cyclohexanol is more soluble in water than chlorocyclohexane. The presence of the hydroxyl group in cyclohexanol allows for hydrogen bonding with water molecules, enhancing its solubility. Chlorocyclohexane, on the other hand, is nonpolar and lacks the ability to form significant hydrogen bonds with water.
c) Cyclohexanol is more soluble in water than phenol and 4-methylcyclohexanol. Both cyclohexanol and phenol can form hydrogen bonds with water, but phenol's aromatic ring reduces its solubility. 4-methylcyclohexanol is also less soluble than cyclohexanol due to the steric hindrance from the methyl group, which disrupts hydrogen bonding.
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in an atom with more than one electron, what is the highest energy subshell in the second energy level?
In the second energy level, the highest energy subshell is 2p. The subshells are shown by the orbital quantum numbers.
There are four sets of quantum numbers that describe an electron in an atom which are;
Principal quantum numberOrbital quantum numberMagnetic quantum numberSpin quantum numberThe values of the orbital quantum number which shows the energy subshell in which an electron is found must take on values from 0 to (n - 1).
Having said that, for an atom with more than one electron, the highest energy subshell in the second energy level corresponds to l =1 which is the 2p orbital. Remember that s p d f corresponds to 0 1 2 3 .
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