Which is a chemical property that can be used to identify hydrogen peroxide? A. clear and colorless B. reacts when its exposed to light C. boiling point of 108 °C (226.4 °F) D. melting point of -33 °C (–27.4 °F)

Answers

Answer 1
B. reacts when its exposed to light
Answer 2

Answer: Option (B) is the correct answer.

Explanation:

A property which tends to bring changes in chemical composition of a substance is known as chemical property.

For example, precipitation, reactivity, toxicity etc are chemical property.

So, when hydrogen peroxide reacts upon exposure to light then it depicts its chemical property.

On the other hand, a property that does not bring any change in chemical composition of a substance are known as physical properties.

For example, shape, size, mass, volume, density, etc of a substance are all physical properties.

Thus, we can conclude that a chemical property that can be used to identify hydrogen peroxide is that it reacts when its exposed to light.


Related Questions

What substance is a mixture?
Salt
Gasoline
Aluminum
Carbon dioxide

Answers

Answer is: gasoline.

Gasoline is a mixture  of many different hydrocarbons: alkanes (paraffins), cycloalkanes  and alkenes (olefins).

Salt and carbon dioxide are chemical compounds, aluminium (Al) is an chemical element.

Pure substance is made of only one type of atom (element) or only one type of molecule, it has definite and constant composition with distinct chemical properties.

Pure substances can be separated chemically, not physically, that is difference between pure substances and mixtures.

How many grams is in a 5 pound sample? express your answer in scientific notation with four significant figures. (1 pound = 453.592 grams)?
A) 2.3 x 10^3 g
B) 1.1 x 10^4 g
C) 2.27 x 10^2 g
D) 2.268 x 10^3 g

Answers

The answer is A. I hope this helps

A sample of 5 lb has a mass, expressed in grams, of 2.268 × 10³ g (Option D).

To convert pounds (lb) to grams (g), we need a conversion factor. In this case, the conversion factor is 1 lb = 453.592 g. A mass of 5 lb, expressed in grams, is:

[tex]5 lb \times \frac{453.592 g}{1lb} = 2.268 \times 10^{3} g[/tex]

A sample of 5 lb has a mass, expressed in grams, of 2.268 × 10³ g.

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Experiment 7 excess salt is added to water and the mixture is stirred until no more salt dissolves (the solution is saturated). the salt that does not dissolve is allowed to settle out. what will happen to the concentration of the salt in the solution if water evaporates until the volume of the solution is half the original volume? (assume the temperature remains constant.)

Answers

The concentration of salt will become more concentrated.
When water evaporates, salt does not. The volume of water cannot hold all salt particles and as a result, some salt would be crystallized and became cube like shapes and since the amount of salt didn't change, the concentration of salt increases.

Designing an experiment your family has planted a garden you o serve that some of the plants in the garden have teeth marks In them what is eating the plants

Answers

bugs/insects or rodents.

Consider the compound Pb(CO3)2 and answer the following questions:
a.Whats the name of the compound?
b.What is the molar mass of this compound? Explain how you calculated this value

Answers

a) Answer is: he name of the compound is lead(IV) carbonate.

In this compound, lead has oxidation number +4 and carbonate has oxidation number -2.

b) Answer is:  the molar mass of this compound is 327.2 g/mol.

M(Pb(CO₃)₂) = Ar(Pb) + 2Ar(C) + 6Ar(O) · g/mol.

M(Pb(CO₃)₂) = 207.2 + 2 · 12 + 6 · 16 · g/mol.

M(Pb(CO₃)₂) = 327.2 g/mol.

The name of the compound is  lead(IV) carbonate. The molar mass of this compound is 327.2 g/mol.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

M(Pb(CO₃)₂) = Ar(Pb) + 2Ar(C) + 6Ar(O) · g/mol.

M(Pb(CO₃)₂) = 207.2 + 2 · 12 + 6 · 16 · g/mol.

M(Pb(CO₃)₂) = 327.2 g/mol.

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When converting the volume of water to mass of water, what conversion unit would you use?

A. one milliliter of water equals one milligram of water
B. one liter of water equals one gram of water
C. one liter of water equals one kilogram of water
D. one thousand liters of water equals one kilogram of water

Answers

your answer should be, B) one liter of water equals one gram of water

A liter of water contains 1,000 cubic centimeters or 1,000 milliliters. Therefore, 1 Liter= 1,000 grams, or 1 Kilogram. 1 cubic centimeter= 1 milliliter = 1 gram.

The electrons that are passed to nadp at the end of the electron transfer chain were obtained from

Answers

at the end of the electron transfer chain were obtained from chlorophyll 

Waves move fastest in

low-temperature gases.
low-temperature solids.
high-temperature gases.
high-temperature solids.

Answers

The correct answer is high temperature solids

Answer:

The correct answer is high temperature solids

Explanation:

How does changing electronegativity affect bond character?

Answers

When it comes to Chemical bonds, it stretch out along a range between two theoretical limits, "ionic" and "Covalent" those are "ideal bonds". Actual chemical bonds have distinctiveness of both of the theoretical extremes (ionic and covalent). The percent ionic character is related to the electro negativity difference ΔEN.

Final answer:

The bond character changes as electronegativity varies, with greater differences leading to a bond with more ionic character, causing unequal electron distribution and partial charges on the atoms.

Explanation:

Electronegativity is a measure of the tendency of an atom to attract electrons or electron density towards itself. The character of a bond—whether it is ionic, polar covalent, or nonpolar covalent—is determined by the difference in electronegativity between the two bonded atoms. When there is a significant difference in electronegativity, the bond is considered ionic, meaning one atom effectively donates an electron to the other. As the electronegativity difference decreases, the bond becomes more covalent, with electrons shared more equally between atoms. In the case of a polar covalent bond, the electrons are shared unequally, leading to a partial charge on each atom and creating a dipole moment (μ = Qr).

The larger the difference in electronegativity, the more polarized the electron distribution in the bond. This causes the atom with higher electronegativity to have a partial negative charge, while the atom with lower electronegativity has a partial positive charge. In summary, as the difference in electronegativity increases, the ionic character of the bond increases, creating a more pronounced uneven distribution of electron density.

What do oxygen (O) and bromine (Br) have in common? They both tend to gain electrons to gain stability. They both have seven valence electrons. They are both halogens. They are both unreactive.

Answers

Oxygen and bromine are both nonmetals, and most nonmetals tend to gain electrons to gain stability

Only bromine has seven valence electrons - oxygen has six.

Only bromine is a halogen (group 7)

They are both highly reactive. Only the noble gases (group 8) are unreactive elements.

Oxygen as well as bromine were indeed nonmetals, and the majority of nonmetals tend to prefer up electrons to become more stable.

What is nonmetals?

Nonmetals include colorless vapors and glossy, high melting point solids; they are chemical elements that often lacking a majority of metallic qualities.

What is electrons?

The electron would be a subatomic particle with a negatively elementary charged electric charge.

Therefore, Oxygen as well as bromine were indeed nonmetals, and the majority of nonmetals tend to prefer up electrons to become more stable.

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Vinegar (C2H4O2) and baking soda (NaHCO3) react to form sodium acetate, water, and carbon dioxide.
C2H4O2 + NaHCO3 ?
How many total carbon atoms are expected in these products?
A. 1
B. 2
C. 3
D. 4

Answers

C or in other words three.

Answer: The correct answer is Option C.

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This means that total mass on the reactant side is equal to the total mass on the product side.

This also means that the total number of individual atoms on the reactant side will be equal to the total number of individual atoms on the product side.

For the given chemical reaction, the reactants are: [tex]C_2H_4O_2\text{ and }NaHCO_3[/tex]

Number of carbon atoms = 3

Number of hydrogen atoms = 5

Number of sodium atoms = 1

Number of oxygen atoms = 5

These number of individual atoms must be present on the product side as well.

Hence, the correct answer is Option C.

object A: has a mass of 2g a volume of .5L
object b: has a mass of 3g and a volume of 5L

water has a density of 1g/L, which object will sink in water?which one Will float? I will you20 points if correct




Answers

An object will be floating in water if the density is lower and will be sink if the density is higher. Water density would be 1000g/liter or 1g/ml. To determine whether the object float or sink you need to calculate both object density.

The density of object A would be: 2g/ 0.5liter= 4g/liter
The density of object B would be: 3g/ 5liter= 0.6g/liter

It is clear that the object is much lighter than water so both objects would float.

which example provide the most complete descripition of an object motion? A. the bird watcher follwed the south trailer of five distance of five kilometers in 45 minutes.
B. The lion had to run at 30 km per hour across the Savannah to caught its prey.
C. The golfer sent the golf ball flying toward the cup to score a hole-in-one.
D. The mixer blended the ingredients for the cake in under two minutes,

Answers

The answer is C.) hoped this helps

The golfer sent the golf ball flying toward the cup to score a hole-in-one, provide the most complete description of an object motion. Therefore, option C is correct.

What is motion ?

Motion is the shift in an object's location with relation to its environment over a specific amount of time. The following phrases can be used to describe the motion of an object with mass: distance, displacement, and speed.

Translational motion is the term used to describe how an atom can move from one place in space to another. Additionally, molecules composed of several atoms can vibrate because of chemical bonds, which cause the atoms to move about their equilibrium position like springs.

Oscillatory, rotational, transactional, uniform, non-uniform, periodic, circular, and linear motion are only a few examples of the different motion types that can exist.

Thus, option C is correct.

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Humanists believed in comparing people to animals true or false

Answers

False Humanists believed in what human have and appreciate them

Answer: False

Explanation:

Humanist believe that humans as well as other living organism has evolved through time and will continue to evolve.

They believe in the happiness and well-being of the human person.

When water is heated in an ocean the liquid water changes from and turns into?

Answers

Hello!

The answer is Evaporation

When you add heat to water, it boils, releasing gas into the air. This is called Evaporation. The water changes from a liquid to a gas.

Hope this helped!

Absolute zero is?
A.the lowest possible volume occupied by a gas.
B.the lowest possible temperature of a gas.
C.the lowest possible pressure exerted by a gas.
D.none of the above.

Answers

B. the lowest possible temp of a gas

Explain how calcium, ca2+, and phosphate,po43−, can make a compound with electroneutrality

Answers

Calcium, a group 2 element, naturally loses two electrons in order to become electronically stable. PO43- naturally gains 3 electrons to become more electronically stable. In order to bond with electroneutrality, it is necessary for the ions to bond to create a molecule with 3 Ca2+ ions and 2 PO43- ions, since 3 Calcium ions have a charge of 6+ and 2 phosphate ions have a net charge of 6-. This creates a molecular net charge of 0.

Suppose you had a mixture of iron pellets, pebbles, and small wood spheres, all of which were about the same size. how would you seperate the mixture

Answers

Final answer:

Use a magnet to separate the magnetic iron pellets from the non-magnetic pebbles and wood spheres, then add water to the remaining mixture to float the wood and sink the pebbles for easy separation.

Explanation:

To separate a mixture of iron pellets, pebbles, and small wood spheres that are about the same size, you can utilize their differing physical properties. Iron can be separated from non-magnetic materials using a magnet because the property of ferromagnetism is specific to certain metals, including iron. This process leaves you with pebbles and wood spheres.

Next, to separate the pebbles from the wood spheres, you might use water because wood floats and pebbles sink. By adding water to the mixture, the wood spheres would float to the surface, where they could easily be removed, and the pebbles would settle at the bottom of the container. Finally, removing the water would leave you with just the pebbles.

Gases emitted during volcanic activity often contain high concentrations of hydrogen sulfide and sulfur dioxide. these gases may react to produce deposits of sulfur according to the equation: 2 h2s(g) so2(g) → 3 s(s) 2 h2o(g) for the complete reaction of 6.41 mol of hydrogen sulfide:

Answers

There can be three possible answers to this question: the amount of moles of SO₂ gas needed to react with 6.41 mol H₂S, and the amount of S and H₂O gas produced.

Amount of SO₂:
6.41 mol H₂S (1 mol SO₂/2 mol 2 mol H₂S) = 3.205 moles SO₂ gas

Amount of S:
6.41 mol H₂S (3 mol S/2 mol 2 mol H₂S) = 9.615 moles S solid

Amount of H₂O:
6.41 mol H₂S (2 mol H₂O/2 mol 2 mol H₂S) = 6.41 moles H₂O gas
Final answer:

In a volcanic reaction, two moles of hydrogen sulfide and sulfur dioxide react to form three moles of sulfur and two moles of water. Given 6.41 moles of hydrogen sulfide, 9.615 moles of sulfur would be formed. This reaction explains the presence of sulfur deposits in volcanic areas and contributes to the removal of hydrogen sulfide from volcanic emissions.

Explanation:

In the given reaction: 2H₂S(g) + SO₂(g) → 3S(s) + 2H₂O(g), hydrogen sulfide (H2S) and sulfur dioxide (SO2) are converted into sulfur (S) and water (H2O). This is a common reaction that occurs during volcanic activities when gases are emitted. It explains the presence of sulfur deposits found in volcanic areas.

As indicated by the stoichiometry of the reaction, for each two moles of hydrogen sulfide reacted, three moles of sulfur are produced. Therefore, for the complete reaction of 6.41 moles of H2S, you would expect to form 3/2*6.41 = 9.615 moles of sulfur.

The reaction is an example of redox (reduction-oxidation) process. Here, hydrogen sulfide is oxidized to water, while sulfur dioxide is reduced to sulfur. The reaction, besides leading to the creation of sulfur deposits in volcanic regions, also contributes to the removal of hydrogen sulfide one of the gases found within volcanic emissions.

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What types of elements are shown in the polyatomic ions in model 1?

Answers

We can see here that the elements that are shown in the polyatomic ions in Model 1 are non-metals.

Polyatomic ions are charged chemical species (ions) composed of two or more atoms covalently bonded together. These ions have an overall electric charge, which is the result of gaining or losing electrons to achieve a stable electron configuration. Unlike monatomic ions, which are single atoms with a charge, polyatomic ions are molecular entities.

These ions play a crucial role in chemical reactions and ionic compounds. When polyatomic ions combine with metal or nonmetal ions, they form ionic compounds with distinctive properties. It's important for students of chemistry to learn and understand the common polyatomic ions and their charges, as they are fundamental to various chemical processes and reactions.

The Model 1 in question that complete the question is seen below:

how do you measure for acidity or alkalinity?

Answers

By measuring its PH.
To know alkalinity or acidity measure by PH

In which orbital does an electron in a bromine atom experience the smallest?

Answers

The more shielding, inner electrons

Complete the equation for the dissociation of cdcl2(aq). omit water from the equation because it is understood to be present.

Answers

Cadmium chloride is a highly soluble compound. The equation for its dissolution is:

CdCl₂(s) → Cd⁺²(aq) + 2Cl⁻(aq)

This dissociation in water allows for the cadmium and chlorine ions to take part in reactions. This is the reason that solutions of chemicals are prepared when a reaction needs to take place.
Final answer:

The dissociation of CdCl2(aq) in the solution is depicted as CdCl2(aq) → Cd²⁺(aq) + 2Cl⁻(aq). It's an essential part of Ionic Chemistry.

Explanation:

The dissociation of CdCl2(aq) refers to the process where the compound cadmium chloride, when put in solution (water has been omitted per your instructions), breaks down into its individual ions. This dissociation is represented by the equation: CdCl2(aq) → Cd²⁺(aq) + 2Cl⁻(aq). Here, the CdCl2(aq) molecule breaks apart in water to form one Cd²⁺ cation and two Cl⁻ anions.

The above equation represents the process in Ionic Chemistry where ionic compounds dissociate into their constituent ions in a solution. It's a crucial aspect of the behavior of chemical species in various reactions and processes.

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Is a mineral found on a gemology expedition likely to be a substance

Answers

A natural crystalline substance with different chemical and physical characteristics called gems and minerals can be found in expedition done by a gemologist. Gems and minerals are like an ordinary rock in their natural state but polished in order to have more value. They are often used as jewelry.  

In a dilution ___ is added to a solution to decrease the concentration of the ___ however the number of moles of ___ will remain constant

Answers

In a dilution, SOLVENT is added to a solution to decrease the concentration of the SOLUTION however the number of moles of SOLUTE remain constant.

During dilution, solvent is added to a solution to decrease the concentration

of the solution however the number of moles of solute will remain constant.

Dilution is the process by which a solvent such as water is added in order to

decrease the concentration of the solution. This is usually done to prepare

some specific substances or to reduce the harsh effect the concentrated

solution can cause.

The number of moles of the solute is unaffected by dilution as it only affects

the concentration of the solution.

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Please help me thank you.

Answers

I will show you with detailed work for NaCl, but follow the same procedure for the rest of the compounds.

Molar Mass - Find the molar mass of the Na and the Cl and add them together
Na - 23
Cl - 35.5
Add those numbers together 23 + 35.5 = 58.5 g/mol

Moles in 1 tsp:
The mass measured in 1tsp of NaCl was 18 g.  To calculate the amount of moles you take the mass measured and divide it by the molecular weight.
18/58.5 = 0.3077 mol

Moles of each element:
To find the moles each element in the compound you multiply the moles of 1 tsp by the number of atoms of the element in the compound
Na - 1 in NaCl
Cl - 1 in Na Cl
so take 0.3077 * 1 = 0.3077 moles Na (and Cl in this case)

Atoms of each:
take the number of moles calculated and multiply that by Avogadro's number(6.023x10^23) for the number of molecules
So for both Na and Cl:
0.3077 * 6.023x10^23 = 1.853x10^23 atoms for both Na and Cl

In terms of chemical bonds and electrons, what kinds of changes occur between atoms when substances undergo chemical reactions?

Answers

During a chemical reaction there occurs a bond making or bond breaking. Chemical bonds are formed by electron sharing or lose or gain of electrons from atoms.

What is chemical change?

A chemical change of a substance is the change in its chemical bond like new bond formation or existing bond breakes in a chemical reaction.There are different types of chemical bonds such as ionic bond, covalent bond, hydrogen bond etc.

Ionic bonds are formed between metals and nonmetal atoms by losing electrons from the metals to the non-metals. Where the atoms are of high electronegativity difference. For example, NaCl is an ionic compound.

Covalent bonds are formed by sharing one or more electrons between atoms based on their valence electrons. For example CH4 is a covalent compound formed by sharing of 4 electrons from carbon and one electron from each hydrogen.

Atoms or molecules when combine together to form products, there occurs regrouping of atoms by bond making  or bond breaking by exchange of electrons.

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Final answer:

A chemical reaction involves breaking chemical bonds in reactants and forming new bonds in products, which leads to a change in energy and results in new substances with different properties.

Explanation:

During a chemical reaction, there are significant changes in the way atoms are bonded together. The changes can be described in terms of the breaking and forming of chemical bonds and the transfer or sharing of electrons among atoms. Atoms are held together in substances by chemical bonds. During a chemical reaction, these bonds are broken, which leads to the separation of atoms. They subsequently rearrange themselves and form new bonds, resulting in new substances with different properties. The substances we start with are known as the reactants, and the new substances formed are the products. An arrow in the chemical equation represents the direction from reactants to products, which signifies the progression of the chemical reaction. During this process, changes in the energy of the system often occur because breaking old bonds and forming new ones involve either absorption or release of energy.

What is the enthalpy for reaction 1 reversed? reaction 1 reversed: co2→co + 12o2?

Answers

Answer: CO2→CO + 12O2 is not a balanced reaction, I think you meant to post " CO2→CO + 1/2O2" The simple answer is that the enthalphy for reaction 1 reversed is the same enthalpy as for the reaction as written but with the opposite sign. If A + B = AB with 30 kJ released then AB = A + B with 30 kJ absorbed. We would write it as A + B = AB heat of reaction = -30 kJ AB = A + B heat of reaction = +30 kJ

For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation.
Reactant Product K Cl O Which element is oxidized? Which element is reduced?

Answers

Oxidation states number (OSN) show how many electrons gained, lost or shared during chemical reactions. 

Here are some rules of oxidation state numbers.

1. OSN of 1A elements in compounds is +1
2. OSN of Oxygen in compounds is -2
3. Sum of OSN of elements equals zero in neutral compounds.
4. OSN of free elements is zero. ex. F2, N2, O2.. all have 0 OSN.

If an element loses electrons during reaction, it is oxidized. That element is called as reducing agent.

If an element gains electrons during reaction, it is reduced. That element is called as oxidizing agent.

In the given reaction, potassium perchlorate decompose into potassium chlorate and oxygen.

a) KClO4.
K (potassium) is 1A element, OSN +1,
Oxygen in the compound has OSN -2.
Let OSN of Cl be x 
1+ x+(4*-2)=0 (since compound is neutral)
Solve the equation. X is equal to +7. 

b)Potassium perchlorate is the reactant, Potassium chloride and Oxygen are the products.
 Reactants -----> Products

c) Check out change of OSN of elements.
in KCl, OSN number of K is +1, Cl is -1. So Cl+7---->Cl-1. It takes 8 electrons. It was reduced.
in KClO4, OSN number of O is -2, in O2 it becomes O. So O-2---->O. It gives electrons. It was oxidized.
Shortly,
LOSS OF ELECTRONS=OXIDIZED 
GAIN OF ELECTRONS=REDUCED

Final answer:

In the given reaction, Chlorine is reduced (its oxidation state changes from -1 to -1), and Oxygen is oxidized (its oxidation state changes from -2 to 0).

Explanation:

In the given chemical reaction, KClO4 is the reactant that decomposes into KCl and 2O2 which are the products. Oxidation states for each element on each side of the equation are as follows, K: +1, Cl: –1, and O: –2 in KClO4, and K: +1, Cl: –1, and O: 0 in KCl and O2. In this reaction, Chlorine (Cl) is reduced from an oxidation state of -1 to -1, while Oxygen (O) is oxidized from an oxidation state of -2 to 0.

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How many protons and electrons are present in the mg2+ ion?

Answers

There are 12 protons and 10 electrons in a Mg2+ ion, the normal amount of neutrons is 12.
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