pb3(po4)2 compound name

Intrinsic semiconductors like silicon have a bandgap, which is the energy difference between the valence band (where electrons are bound) and the conduction band (where electrons are free to move and conduct electricity).

At absolute zero temperature (0 K), all electrons are in the valence band. As the temperature increases, some electrons acquire enough thermal energy to jump across the bandgap and occupy the conduction band. The number of electrons in the conduction band depends on the energy distribution of electrons, described by the Fermi-Dirac distribution function. For silicon at room temperature (300 K), which has a bandgap of approximately 1.12 eV, most electrons remain in the valence band since only a small fraction possesses sufficient thermal energy to reach the conduction band. The Fermi energy (E_F), which represents the energy level where there is a 50% probability of finding an electron occupied, is located close to the valence band energy level. Consequently, the number of electrons in the conduction band for silicon at 300 K is relatively low. While not exactly zero, it is considered negligible for practical purposes. The vast majority of electrons still reside in the valence band. Therefore, the conduction band of silicon at this temperature contains only a small fraction of the total number of electrons in the material.

Learn more about conduction band here : brainly.com/question/30890306
#SPJ11

         When molecules of the constituent components are not entirely mixed, this is referred to as a heterogeneous mixture. You could observe patches of one substance scattered among patches of another substance with the unaided eye or even under a microscope. The mixtures typically manifest as various phases or states of matter.

       The environment on a wet day serves as an illustration of a heterogeneous blend. Air, a gas, and liquid raindrops combine to create the wet atmosphere. Through the less thick air, there are spots of dense liquid water dropping. Due to the presence of two states, or phases, of matter—liquid and gas—it is clearly a heterogeneous mixture.

        Importantly, visibility is lowered on a rainy day. Because sunlight can move through air without being blocked, we can see through it. However, liquid raindrops bend, disperse, and block sunlight, preventing it from passing through the cloudy atmosphere.

         On the planet Earth, heterogeneous mixes make up the great bulk of substances.

        Below are many instances of typical heterogeneous mixtures.

To Learn more About heterogeneous mixture, Refer:

https://brainly.com/question/14441492

#SPJ13

Answer:

The materials would be best to us for the core to make the strongest electromagnetic to pick up the most nails is described below in detail.

Explanation:

Use a couple of wire strip-pers to exclude some centimeters of insulation from every end of the cable. Skillfully cover the cable around the nail. The more cable you enclose around the nail, the more effective your electromagnet will be. Compose certain that you leave sufficient of the cable unwrapped so that you can connect the battery.

Answer:

The correct answer is 25 %

Explanation:

According to the chemical reaction:

Xe(g) + 2 F₂ (g) → XeF₄ (g)

1 mol of Xe(g) reacts with 2 mol of F₂(g), so the stoichiometric ratio os reactants is 2 mol F₂/mol Xe.

We have 2.2 mol Xe and 2.0 mol F₂, so the ratio is:

2.0 mol F₂/2.2 mol Xe = 0.909 mol F₂/mol Xe

The molar ratio of reactant we have is lower than the required, so F₂ is the limiting reactant.

By using the limiting reactant, we calculate the theoretical amount of product (XeF₄). For this, we know that 1 mol of XeF₄ is formed from 2 mol of F₂ (1 mol XeF₄/ 2 mol F₂), and we have 2.0 mol F₂:

2.0 mol F₂ x (1 mol XeF₄/ 2 mol F₂)= 1 mol XeF₄

If we only obtained 0.25 mol XeF₄, the percent yield of the experiment is:

Yield = experimental amount/theoretical amount x 100%

        = 0.25 mol XeF₄/ 1 mol XeF₄ x 100% = 25 %

The percent yield of the solution is 25%.

The equation of the reaction is;

Xe(g) + 2F₂ (g) → XeF₄ (g)

From the reaction equation;

1 mole of Xe reacts with 2 moles of F2

2.2 moles of Xe will react with 2.2 moles × 2 moles /2 moles

= 4.4 moles of F2

We can see that there is not enough  F2 hence it is the limiting reactant

2 moles of F2 yields 1 mole of XeF4

2 moles of F2 yields 2 moles ×  1 mole/2 moles = 1 mole of XeF4

% yield = actual yield/Theoretical yield × 100

% yield =  0.25 mole/ 1mole × 100

% yield =  25%

Learn more: https://brainly.com/question/2510654

Answer:

Independent variable

Explanation:

The conclusions or discussions presented in study 2 regarding the relationship between Cl- wet deposition and seasonal variations.

To determine if the statement is supported by the results of study 2, we need to follow a step-by-step process:

Obtain the results of study 2: Obtain the research paper or report detailing the results of study 2.

Identify the variables and data: Look for data related to Cl- wet deposition and its values during different seasons, specifically winter and early spring.

Analyze the data: Examine the data to see if it provides information on Cl- wet deposition values during different seasons.

Compare the values: Compare the Cl- wet deposition values during the winter and early spring to values from other seasons (e.g., summer, autumn) to determine if there is a notable difference.

Consider the findings: Review the conclusions or discussions presented in study 2 regarding the relationship between Cl- wet deposition and seasonal variations.

Check if the study supports the statement that Cl- wet deposition values are greater during the winter and early spring.

Evaluate the evidence: Assess the strength of the evidence provided by study 2. Consider factors such as sample size, statistical significance, and any limitations or potential biases.

Formulate a conclusion: Based on the analysis of the data and findings in study 2, determine if the statement is supported or not.

Without access to the specific results and findings of study 2, it is not possible to provide a definitive answer.

It is essential to consult the actual study and evaluate the evidence within its context to determine if the statement is supported.

Learn more about deposition from the given link

https://brainly.com/question/1470616

#SPJ11

Answer:

No

Explanation:

In the hot pack, as the water reacts with the magnesium sulfate, the pack becomes bigger is not an indication that new atoms have been created or produced.

As with all chemical reactions, they all obey the law of conservation of matter which states that "in chemical reactions, matter is neither created nor destroyed but atoms simply recombine".

The reason why the hotpack becomes bigger is because the atoms gain more volume.

Answer: protons

Explanation:

a) Neutrons are located in the nucleus but have a negative charge.

b) Atoms are not subatomic particles but are rather made of subatomic particles.

c) Electrons are subatomic particles with a negative charge that are located outside of the nucleus.

d) Protons are subatomic particles that are located in the nucleus and have a positive charge.

Answer:

Distance

Explanation:

The distance between the beginning of the first P wave and the first S wave tells you how many seconds the waves are apart. This number will be used to tell you how far your seismograph is from the epicenter of the earthquake. Measure the distance between the first P wave and the first S wave.

You will need to administer 30ml of potassium chloride to the patient.

To calculate the volume (ml) of potassium chloride to administer, we can use a proportion. The given label states that there are 20mEq of potassium chloride in 15ml.

Let's set up the proportion:

20mEq / 15ml = 40mEq / x ml

To solve for x, cross-multiply:

20mEq * x ml = 15ml * 40mEq

Now divide both sides by 20mEq:

x ml = (15ml * 40mEq) / 20mEq

Simplifying further, we get:

x ml = 30ml

Learn more about potassium chloride from the given link

https://brainly.com/question/31563020

#SPJ11

ClO\(_2\), H\(_2\)O are the polar covalent compounds, since all of these chemicals have a dipole moment.

Polar covalent compounds are electrical conductors. Polar compounds comprise chemical compounds held together through polar covalent bonds.

A polar compound is a chemical species that has two or even more atoms that are linked together by polar covalent bonds that share electrons irregularly. ClO\(_2\), H\(_2\)O are the polar covalent compounds, since all of these chemicals have a dipole moment.

Therefore,  ClO\(_2\), H\(_2\)O are the polar covalent compounds.

To know more about polar covalent compound, here:

https://brainly.com/question/30420584

#SPJ1

The number 5.024x10\(^23\) is in scientific notation, indicating a very large number.

It is not clear what kind of particles or objects this number represents.

So it's impossible to convert it to a mass in grams without additional information such as the identity of the substance or particles involved and their molar mass.

However, if this number represents a quantity of a substance in units of particles or molecules (rather than mass).

We could convert it to moles using Avogadro's number (6.022 x 10\(^23\) particles/mol) and then to mass using the molar mass of the substance.

Learn more about scientific notation

brainly.com/question/32000873

#SPJ11

Answer:

A

Explanation:

Mass is a measure of the amount of matter in an object.

The mass of a substance measures the amount of matter it contains. Therefore, option A is correct.

Mass can be explained as an intrinsic property of an object. Mass can be described the amount of matter in a body. Different atoms or different particles with the same amount of matter possess nonetheless different masses.

Mass can be experimentally determined by the body's inertia, meaning the resistance to an acceleration of the body when a net force is applied. The mass evaluates the strength of the gravitational attraction to the bodies.

The S.I. base unit of measurement of mass can be represented by the kilogram (kg) but it is not the same as that of weight. Mass can be defined as generally measuring the weight utilizing a spring scale, rather than a balance scale and comparing it to already known masses.

A body on the Moon will weigh less than on Earth due to the lower gravity on the moon but still have equal mass. Paul and Karen determined that the mass of a sample was 50 g which is the amount of matter it contains.

Learn more about mass, here:

brainly.com/question/13040516

#SPJ2

Answer: The volume decreases

Explanation:

Because 4C is a cold temperature and atoms inside the water start to move slowly and begins to cange into a solid formation.

The density of the water increases and it is maximum at 4 degrees Celsius.

The temperature at which the liquid and solid states of the substance are in equilibrium at atmospheric pressure .

freezing point of water is 0° Celsius or 32° Fahrenheit.

Though liquids expand on heating water does not expand between 0°C to 4°C instead it contracts as water has maximum density at 4°C.

Thus the option C is the right answer , The density of the water increases as water is heated from 0 degree Celsius to 4 degree Celsius

To know more about Freezing Point

https://brainly.com/question/3121416

#SPJ2

Just the atoms that make up a molecule are shown using the empirical formula.

What exactly is an empirical formula?

In contrast to theory or belief, empirical research develops knowledge from actual experience based on observable and quantifiable phenomena.

An empirical formula is a chemical formula for a compound that only specifies the ratios of the elements present in the compound and not the exact number or arrangement of atoms.

Simply displaying the atoms that make up a molecule using the empirical formula is typical. This is useful if you want to recognize the elements you're working with quickly. When determining how many atoms of each element are present, the molecular formula is useful.

To learn more about empirical formula refer to:

brainly.com/question/13058832

#SPJ1

The volume and the density of the air change with changes in the temperature. As the temperature of the air increases, its volume will  increases and its density decreases as volume is inversely proportional to density.

As the  temperature increases , the volume will also increases due to the thermal expansion. The temperature is directly proportional to the volume.

T ∝ V

The expression for the density is as follows :

Density = mass / volume

The density is inversely proportional to the volume. Therefore , if the temperature of the air increases , the volume will also increases and the density of the air will be decreases. If the temperature of air decreases, its volume will decreases and its density will increases.

To learn more about density here

https://brainly.com/question/3388838

#SPJ4

This question is incomplete, the complete question is :

The volume and density of air change with changes in temperature. As the temperature of air increases, its volume increases and its density decreases. As the temperature of air decreases, its volume decreases and its density increases. Explain.

The law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

In other words, as the quantity of one good increases, the individual is willing to sacrifice fewer units of the other good to obtain an additional unit of the first good. This reflects a diminishing rate of substitution between the two goods.

The reason why the law of diminishing marginal rate of substitution suggests that isoquants must be bent toward the origin is rooted in the concept of diminishing marginal utility. As more units of a particular input (e.g., labor or capital) are added while holding other inputs constant, the additional output gained from each additional unit of the input will decrease. This diminishing marginal productivity leads to a decreasing MRS.

When isoquants (which represent different combinations of inputs that produce the same level of output) are bent toward the origin, it reflects the fact that as more of one input is used, the amount of the other input that needs to be substituted decreases. This bending signifies the diminishing MRS and captures the idea that a larger quantity of one input can be substituted for a smaller quantity of the other input to maintain the same level of output.

Overall, the law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

To know more about marginal rate of substitution, click here, https://brainly.com/question/30763866

#SPJ11

Answer:

that was wrong my bad. just delete my answer

Explanation:

Answer:

Coductivity

Explanation:

Because heat conducts to them!

To balance a chemical equation, we want to make sure that the number of atoms of each element is equal on both sides of the equation. Here's the balanced form of each of the chemical equations you provided:

C6H12O6 + 6O2 -> 6H2O + 6CO2

Ba + 2H2O -> Ba(OH)2 + H2

2K + 2H2O -> 2KOH + H2

2Al(OH)3 -> Al2O3 + 3H2O

Answer:

104g

Explanation:

Based on the law of conservation of mass, the quantity of zinc produced by reacting calcium and zinc carbonate would be 104g.

The law of conservation of mass states that "in a chemical system, the mass is always conserved as matter is neither created nor destroyed but changed from one form to another".

 In short;

         Mass of products  = Mass of reactants

Mass of products  = Mass of CaCO₃ + Mass of Zn

Mass of reactants  = Mass of Ca + Mass of ZnCO₃

   So;

               152g + Mass of Zn = 64g + 192g

                           Mass of Zn  = 64g + 192g - 152g

                           Mass of Zn  = 104g

Answer:

104g

Explanation:

math + science = 104g

Digital gold.

Silicon is the material of choice in the chip industry. Unlike the metals normally used to conduct electrical currents, silicon is a 'semiconductor', meaning that its conductive properties can be increased by mixing it with other materials such as phosphorus or boron.

Answer:Unlike the metals normally used to conduct electrical currents, silicon is a 'semiconductor', meaning that its conductive properties can be increased by mixing it with other materials such as phosphorus or boron. This makes it possible to turn an electrical current on or off.

Explanation:

The range of the of the oxidation number of the first transition series is +2 to +6.

Transition elements or transition metals are elements or metals that have partially filled d orbitals.

The first main transition series begins with either;

Thus, the range of the of the oxidation number of the first transition series is +2 to +6.

Learn more about oxidation number here: https://brainly.com/question/27239694

#SPJ1

Answer:

M=0.0297M

Explanation:

we know that molarity equals number of mole of solute over the volume of solution.

M=n/V but n=m/M

n=0.225g÷101g/mol =0.00223mol

M=0.00223mol/0.075l

M=0.0297M

Answer:

0.0297M

Explanation:

We will use the formula M= moles of solute/lites of solution.

First we need to figure out the Moles of the solute, to get this we first need the molar mass of KNO3 (potassimum nitrate).

The Molar Mass of potassimum nitrate is 101.103 g/mol
K - 1 x 39.09
N - 1 x 14.006
O - 3 x 15.999
KNO3 - 101.103 g/mol

Now we get the moles of the solute by doing.
0225g/ 101.103g/mol = 0.00223 mol

Put the answer into the orginal equation to get 0.00223mol / 0.045 L
Which equals to 0.0297M. This is also the correct amount of significant figures.

Answer:

I am sure it is D or C. have a nice day

answer:19.13

(10×2×44)÷46

Due to double bonds in the carbon chain of an unsaturated fatty acid, there are fewer hydrogens than those found in saturated fatty acids.

An unsaturated fatty acid can be defined as a carboxylic acid that contains one or more carbon-carbon double bonds.

As a result of the double bonds in unsaturated fatty acids, they are liquid at lower temperature because they aren't tightly packed together.

Consequently, there are fewer hydrogens in unsaturated fatty acids than those found in saturated fatty acids because of the double bonds in its carbon chain.

Read more on unsaturated fatty acids here: https://brainly.com/question/1580524

1 meter = 1000 km

2500 meter = 2500/1000 km

= 2.5 km

Answer:

east to west is the answer