Which represents the overall (net) reaction of this mechanism: step 1: H2O2 + I- → H2O + OI- step 2: H2O2 + OI- → H2O + O2 + I- Note that I- acts as a catalyst in this reaction.


A. 2H2O2 → 2H2O + O2

B. H2O2 → H2 + O2

C. H2O2 + I- → OI- + H2O

D. H2O2 + OI- → H2O + O2 + I-

Answer:

The property of metals that is the result of light reflecting off the electrons is

A.  shiny

The property of metals that is the result of light reflecting off the electrons is shiny. Hence, option A is correct.

The ability of a material to shine is called lustre. Gold, silver and other metals are examples of lustrous substances.

Metals are readily identified by their most common physical property, the ability to reflect light, known as lustre.

The property of metals that is the result of light reflecting off the electrons is shiny. Hence, option A is correct.

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Question:

How many neutrons are there in 186W

Answer:

112

hope it helps (^^)

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liquid vegetable oils are converted to solid fats such as margarine by  Hydrogenation

Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. This process is commonly used to reduce or saturate organic compounds. Hydrogenation usually consists of adding a pair of hydrogen atoms to a molecule (often an alkene). A catalyst is required for the reaction to be useful. Non-catalytic hydrogenation takes place only at very high temperatures. Hydrogenation reduces double and triple bonds in hydrocarbons .

Hydrogenation consists of three components: the unsaturated substrate, the hydrogen (or hydrogen source), and always the catalyst. The reduction reaction takes place at different temperatures and pressures depending on the substrate and catalyst activity.

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The density of the liquid is 0.8125 g/mL.

Density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density. For instance, while Earth has a density of 5.51 grams per cubic centimeter, water has a density of 1 gram per cubic centimeter. Another way to state density is in kilograms per cubic meter (in meter-kilogram-second or SI units). For instance, air weighs 1.2 pounds per cubic meter. In textbooks and manuals, the densities of typical solids, liquids, and gases are stated. The mass of a body can easily be determined from its volume or vice versa using a density.

mass of liquid = (mass of container and liquid) - (mass of empty container)

mass of liquid = 194.37 g - 72.5 g = 121.87 g

The volume of the liquid is equal to the volume of the container, which is 150.0 ml. (1 cm3 = 1 mL)

The density of the liquid is the mass of the liquid divided by the volume of the liquid:

density = mass/volume

density = 121.87 g / 150.0 ml

density = 0.81 g/ml

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Answer:

KCI is rhe solute in a homogeneous mixture

Answer:

1. KCI is the solute in a homogeneous mixture.

Explanation:

The mass of the piece of porcelain is 27.3 oz.

1st) It is necessary to calculate the mass of the porcelain with the density formula:

2nd) Now it is necessary to convert the gram unit to oz. Here we need to use the relation that 1 g is equal to 0.035 oz:

So, the mass of the piece of porcelain is 27.3 oz.

The maximum amount, in grams, of Fe that would be produced during the experiment, will be 280 grams

From the equation of the reaction:

\(Fe_2O_3 + 2Al -- > 2Fe + Al_2O_3\)

The mole ratio of \(Fe_2O_3\) to Al is 1:2.

But 3 moles and 5 moles of reactants respectively started the reaction. Thus, Al is limited in availability and will determine the amount of products that will be produced.

The mole ratio of Al and Fe is 1:1, therefore, a maximum of 5 moles of Fe will be produced from the reaction.

5 moles Fe = 5 x 56 = 280 grams

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The statement in its interaction with hemoglobin, oxygen is a prosthetic group is False (Option 4).

The hemoglobin protein of the red blood cells is a protein that binds to oxygen in order to transport this reactant of cellular respiration to all cells of the body.

Therefore, with this data, we can see that the hemoglobin protein of the red blood cells is required to bind oxygen which does not act as a prosthetic group and is a reactant of cellular respiration.

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Answer: 0.05

Explanation:Divide the length (1.5 cm) by the number of turns (30)

The direct proportion rule allows you to find that the correct answer for the result of the thickness of the copper wire is:

            0.05 cm

Copper is a strong material with which the cross section is constant, therefore the copper wire has a constant thickness, which is why when making a full turn it advances the same amount

When Jade wound thirty times (n = 30) it has the same diameter each time, therefore with a direct rule of proportions we can find the thickness of the wire.

If in 30 laps we have 1.5 cm, in one lap we have?

            \(x= 1 turn ( \frac{1.5 cm}{30 turn} )\)  

            x = 0.05 cm

In conclusion using a direct rule of proportions we can that the correct answer for the result of the thickness of the copper wire is:

             0.05 cm

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Answer:

The final temperature is 181.92°C

Explanation:

Given

Initial Temperature, T1 = 0°C

Initial Volume, V1 = 555mL

Initial Pressure, P1 = 80.0kPa

Final Volume, V2 = 1880ml

Final Pressure, P2 = 39kPa

Required

Determine the Final Temperature, T1

This question illustrates ideal gas law and will be solved using:

(P1 * V1)/T1 = (P2 * V2)/T2

But first, we need to convert temperature to degree Kelvin

T1 = 0°C = 273 + 0 = 273k

Next, we substitute values for P1, V1, T1, P2 and V2

THE EQUATION BEFOMES

(80 * 550)/273 = (1880 * 39)/T2

44000/273 = 73320/T2

Cross Multiply

44000 * T2 = 73320 * 273

44000T2 = 20016360

Solve for T2

T2 = 20016360/44000

T2 = 454.92K

Convert to degree Celsius

T2 = 454.92 - 273

T2 = 181.92°C

Hence, the final temperature is 181.92°C

The ideal gas law, also called the general gas equation, is the equation of the state of a hypothetical ideal gas.

The ideal gas law work under the constant:-

Hence the formula we gonna use is as follows:-

\(PV = nRT\)

In the question, the pressure, temperature, and volume are given in two different system

Hence it is equal to

\(\frac{PV}{T} = \frac{PV}{T}\)

Put the value given,

\(\frac{80*50}{273} = \frac{1880*39}{T}\)

Solving the equation, the value T will be:-

\(T2 = \frac{20016360}{44000}\)

=181.92C

The temperature given is 181.92C

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Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 75 × 8

We have the final answer as

Hope this helps you

There are natural forces such as the one between two surfaces that rub, called friction. Another force is gravity, that pulls us to the center of the Earth.

Many forces can be found acting on the same object. When two forces act in the same direction, we sum the forces to find net force the force. This causes friction the forces are in the movement of the object. speed up, slow down, change direction or

19. An inclined plane is often called a ramp - It is a flat surface.

Force is defined as the product of mass and acceleration. It is a derived quantity and measured in Newtons ( N ). This goes to say that the S.I unit of force is Newton. However, foce is also measured in kilograms per meters squared.

There are two major types of force, there are:

In conclusion, we can now confirm from the explanation given above that force is obtained from the combination of fundamental quantities.

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Answer:

Molecule C

Explanation:

In this case, on the first reaction, we will have the production of a Grignard reagent. This molecule will react with \(D_2O\) and a deuterium atom will be transferrred to the benzene ring. Then at the top of the molecule, we will have an acetal structure. This acetal can be broken by the action of the acid \(DCl\), In the mechanism at the end, we will obtain a carbonyl group bonded to a hydrogen atom. Therefore we will have in the final product the aldehyde group. See figure 1 to further explanations.

I hope it helps!

Explanation:

Nuclear structure and stability

Although the decay properties of the transuranium elements are important with regard to the potential application of the elements, these elements have been studied largely to develop a fundamental understanding of nuclear reactions and nuclear and atomic structure.

Answer: an element, feature, or factor that is liable to vary or change.

"there are too many variables involved to make any meaningful predictions"

Explanation:

Answer:

A variable is any characteristics, number, or quantity that can be measured or counted.

Explanation:

Answer:

Volume = 3.4 L

Explanation:

In order to calculate the volume of CO₂ produced when 15.2 g of CaCO₃ is heated, we need to first write out the balanced equation of the thermal decomposition of CaCO₃:

CaCO₃ (s) + [Heat] ⇒ CaO (s) + CO₂ (g)

Now, let's calculate the number of moles in 15.2 g CaCO₃:

mole no. = \(\mathrm{\frac{mass}{molar \ mass}}\)

                 = \(\frac{15.2}{40.1 + 12 + (16 \times 3)}\)

                 = 0.1518 moles

From the balanced equation above, we can see that the stoichiometric molar ratios of CaCO₃ and CO₂ are equal. Therefore, the number of moles of CO₂ produced is also 0.1518 moles.

Hence, from the formula for the number of moles of a gas, we can calculate the volume of  CO₂:

mole no. = \(\mathrm{\frac{Volume \ in \ L}{22.4}}\)

⇒ \(0.1518 = \mathrm{\frac{Volume}{22.4}}\)

⇒ Volume = 0.1518 × 22.4

                 = 3.4 L

Therefore, if 15.2 g of CaCO₃ is heated, 3.4 L of CO₂ is produced at STP.

Answer:

D. no definite shape or. definite volume

Explanation:

Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large intermolecular spaces and hence they move around. The particles of solid are closely packed and occupy less space while particles of gases are loosely packed and occupy the complete space available.

Answer:

iron #26, Cu #29, and mercury #80 are transition metals

Explanation:

MULTIPLE CHOICE

Question 3

ed

Which elements are transition metals?

Select all that apply.

A

iron

B.

magnesium

с

copper

D

mercury

look at a periodic table

columns 1,2,13,14,15,16, 17, and 18 are the "representative elements'

columns 3-12 are the transition metals

iron #26, Cu #29, and mercury #80 are transition metals

Answer:

antimony

Explanation:

Since the p sublevel is partially filled, it is in the p-block. There are five electrons in the outermost energy level, so it has 5 valence electrons. The element is antimony, a metalloid. The element is in Period 7.

Based on the given data, the relationship between rate and concentration is exponential.

A proposed rate law for the reaction based on the given data is:

Collision theory suggests that the rate of a chemical reaction is proportional to the frequency and energy of collisions between the reactant molecules.

As the concentration of iodate ions decreases, the frequency of collisions between reactant molecules decreases, which leads to a decrease in the rate of the reaction.

At higher temperatures, the kinetic energy of the reactant molecules increases, which increases the frequency and energy of collisions between reactant molecules.

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Answer:

NaF

may be this helpful!

The correct way to represent the ionic compound sodium fluoride is NaF (Na+ and F- ions).

The correct way to represent the ionic compound sodium fluoride is NaF. In this compound, sodium (Na) and fluoride (F) form an ionic bond. Sodium is a metal from Group 1 of the periodic table, while fluoride is a non-metal from Group 17.

Ionic compounds consist of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic attractions. In NaF, sodium loses one electron to become a sodium cation (Na+), while fluoride gains one electron to become a fluoride anion (F-). The resulting compound, NaF, consists of Na+ and F- ions arranged in a crystal lattice structure.

The chemical formula NaF represents the stoichiometric ratio of sodium to fluoride in the compound. It indicates that for every sodium cation, there is one fluoride anion present.

NaF is commonly used as a source of fluoride in various applications, including water fluoridation, toothpaste, and as a component in certain industrial processes.

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The sequence for the disgestion of a piece of chicken nugget in the human body is: C. mouth, esophagus, stomach, small intestine, large intestine.

Digestion can be defined as a form of catabolic activity that involves the breaking down of food into smaller sizes that can be absorbed as nutrients by the body of a living organism while releasing energy through the process.

Based on the digestive system, the sequence for the disgestion of a piece of chicken nugget in the human body are:

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The number of the atoms in the sample is 1.8 * 10^23 atoms.

The mole is a unit of measurement in chemistry used to express amounts of a chemical substance.

The mole is used to determine the number of atoms, molecules, or other entities in a given sample of a substance.

We have to look at the concept of the mole in this question.

We know that to obtain the number of moles of the substances we have;

5.54 g /38 g/mol

= 0.15 moles

Then we would have that from the Avogadro's law;

0.15 moles * 6.02 * 10^23 * 2

= 1.8 * 10^23 atoms

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The carrying capacity of the area was reduced in the year 10 according to the graph that shows the number of foxes on the island over a span of 15 years.

The graph shows a population of foxes over a span of 15 years. The y-axis represents the number of foxes on the island, while the x-axis represents time. The study began with the earlier 0 and ran until the start of year 15. According to the graph, the carrying capacity of the area was reduced in the year 10.

In the graph, it is shown that the population of foxes on Sunday Gill island had a significant increase from year 0 to year 3. After year 3, the fox population started to decrease and then remained fairly constant until year 10. After year 10, the population of foxes on the island started to decline more rapidly until the end of the study in year 15

This decline in the population of foxes on the island is most likely due to the reduction in carrying capacity of the area. Carrying capacity refers to the maximum number of individuals that an environment can sustain. When the carrying capacity of an environment is reached, it means that the environment can no longer provide the necessary resources to sustain the population.  

There are various factors that can cause a reduction in carrying capacity, such as environmental degradation, competition for resources, or a natural disaster. In this case, it is not clear what caused the reduction in carrying capacity in year 10, but it is likely that it was due to some environmental factor that impacted the availability of resources for the fox population.
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Answer:

7 is the answer as per the question

Answer: The number that represents a neutral pH is (7)

Explanation:

I took the test on flvs and got it right.

100% Guaranteed Correct :)

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Have a great day!!

The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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