What is the name of the charge that orbits the nucleus called?

The pH value of 500 mL of an aqueous solution of 0.005 mole HCl is 2

We'll begin our calculations by obtaining the molarity of the solution. Details below:

Molarity = mole / volume

Molarity = 0.005 / 0.50

Molarity = 0.01 M

Next, we shall obtain the concentration of the hydrogen ion, H⁺ in the solution. Details below:

HCl(aq) <=> H⁺(aq) + Cl¯(aq)

From the balanced equation above,

1 mole of HCl contains 1 mole of H⁺

Therefore,

0.01 M HCl will also contain 0.01 M H⁺

Thus, the concentration of the hydrogen ion, H⁺ in the solution is 0.01 M

Finally, we shall determine the pH of the solution. Details below:

pH = -Log H⁺

pH = -Log 0.01

pH = 2

Thus, we can conclude that the pH of the solution is 2

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Answer: B is correct.

Explanation:

Answer A is a chemical change because of intense changes of color and expansion.

Answer C is a chemical change, as hydrogen and water are chemically bonding together.

Answer D is a chemical change because oxidation involves loss of electrons during a chemical reaction.

On the other hand, melting is a physical change. Therefore, answer B is the correct answer.

Some examples of molecules that are antigenic may be proteins and or polysaccharides in the cell wall of pathogenic bacteria which may be targeted by the immune system during the production of antibodies.

The relationship between antigens in pathogenic bacteria and antibodies of the immune system is based on the fact that antigens are biomolecules in the pathogens that can be targeted to bond antibodies that are produced by the organism in immune responses against bacteria, viruses, and allergens in the air and foods, etc.

Therefore, with this data, we can see that antigen molecules be any type of biomolecule present in the pathogen and the relationship between antigens in pathogenic bacteria and antibodies of the immune system is based on the binding between them (antigens and antibodies) which is fundamental during certain specific immune responses.

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The molecular formula of the unknown compound, given that it contains carbon, hydrogen, and oxygen is C₆H₁₂O₆

First, we'll begin by obtaining the mass of carbon, hydrogen and oxygen. Details below:

For Carbon

Mass of C = (12 / 44) × 1.649

Mass of C = 0.45 g

For Hydrogen

Mass of H = (2 / 18) × 0.675

Mass of H = 0.075 g

For Oxygen

Mass of O = (mass of compound) - (mass of C + mass of H)

Mass of O = 1.125 - (0.45 + 0.075)

Mass of O = 0.6 g

Next, we shall determine the empirical formula. details below:

Divide by their molar mass

C = 0.45 / 12 = 0.0375

H = 0.075 / 1 = 0.075

O = 0.6 / 16 = 0.0375

Divide by the smallest

C = 0.0375 / 0.0375 = 1

H = 0.075 / 0.0375 = 2

O = 0.0375 / 0.0375 = 1

Thus, the empirical formula of the compound is CH₂O

Finally, we shall determine the molecular formula. Details below:

Molecular formula = empirical × n = mass number

[CH₂O]n = 180

[12 + (2×1) + 16]n = 180

30n = 180

Divide both sides by 30

n = 180 / 30

n = 6

Molecular formula = [CH₂O]n

Molecular formula = [CH₂O]₆

Molecular formula = C₆H₁₂O₆

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To solve this we must be knowing each and every concept related to hybridisation. Therefore, the hybridisation of the given molecule can be given as below.

Only during bond formation does hybridization occur, not in an individual gaseous atom. If the bonding of a molecule is known, the geometry of the molecule may be predicted.

compound                                                              hybridisation

Carbon dioxide (0 = C = O)                                       sp

Propene (CH[tex]_3[/tex]CH = CH[tex]_2[/tex])                                            sp³, sp²,sp²

Formaldehyde (H[tex]_2[/tex]C = O)                                             sp²

Acetone [(CH[tex]_3[/tex] )[tex]_2[/tex] C = O                                                 sp³, sp²,      sp³

Ketene (H[tex]_2[/tex]C = C = O)                                                  sp²,    sp

Therefore, the hybridisation of the given molecule can be given as above.

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Velocity is a vector quantity that describes the rate and direction of an object's motion.

a) The velocity of the fluid:

V = 35 gpm / (π * (1.05 in)^2 / 4) = 7.09 ft/s

b) Reynolds number:

Re = (62.3 lbm/ft^3 * 7.09 ft/s * 1.05 in) / (1.2 cP) = 4,211.9

[2]- a) Expression to find pressure of methane gas at point B:

PB = PA + rgh

b) Pressure of methane gas at point B:

PB = 1,000 psig + (0.072 lbm/ft^3 * 32.2 ft * 0.0689 psia/ft) = 1,233.5 psig

c) Pressure of oil at point C:

PC = PB - 0.433 psia/ft * 32.2 ft = 1,093.3 psig

[3]- Expression to find pressure of inlet water Pw needed to displace oil:

Pw = PC + (σ / r) * (h2 - h1)

Pw = 1,093.3 psig + (σ / 0.072 lbm/ft^3) * (32.2 ft - 0 ft) = 1,093.3 psig + (σ / 0.072 lbm/ft^3) * 32.2 ft.

What is velocity?

Velocity is a vector quantity that describes the rate and direction of an object's motion. It is commonly represented by the symbol 'v' and is measured in meters per second (m/s). Velocity includes both the speed and the direction of the object. For example, if an object is moving north at 10 m/s, its velocity would be 10 m/s north. Velocity can also be determined by taking the derivative of the position function with respect to time.

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Answer:

increasing to decreasing:

F--- S--- Al--- Na--- K

not sure...

The relationship between the calculated concentration of a material and the actual concentration of particles is known as the Van't Hoff factor.

I is the difference between a typical or theoretical colligative quality and an observable one.

The van 't Hoff factor is the difference between the concentration of a material determined by its mass and the concentration of particles actually formed when the substance is dissolved. The van 't Hoff factor is virtually 1 for the majority of non-electrolytes dissolved in water.

For dissociation, association, and the non-electrolyte solute, the Van't Hoff factor value is more than one, less than one, and equal to one respectively.

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Limitations in making progress with Engineering Better Batteries is that electric vehicles are being prevented  to make progress in terms of size  and range , progress which is made is solid state batteries.

A solid-state battery is a battery technology that uses solid electrodes and a solid electrolyte, instead of the liquid or polymer gel electrolytes  which are found in lithium-ion or lithium polymer batteries.

While solid electrolytes were first discovered in the 19th century, several drawbacks have prevented it's widespread application. Developments in the late 20th and early 21st century have caused renewed interest in solid-state battery technologies, especially in the context of electric vehicles, starting in the 2010s.

Solid-state batteries can provide potential solutions for many problems of liquid Li-ion batteries, such as flammability, limited voltage, unstable solid-electrolyte interphase formation, poor cycling performance and strength.

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Answer:

12.5 L

Explanation:

Part 1 - Finding Number of moles

First thing we need to find out is number of moles of oxygen gas. We can achieve this using the formula: PV=nRT

Pressure (Pa) x Volume (cubic meters) = no. moles x gas constant (8.31 J/K*mol) x Temperature (K)

We can rearrange this formula to solve for no. moles:[tex]n=\frac{PV}{RT}[/tex] and plug in the values to solve.

1 atm = 1.01325 x 10^5 Pa, therefore 1.76atm = [tex]1.76*1.01325*10^{5} =178332Pa[/tex]

1 L = 1 x 10^-3 m^3, therefore 5L = [tex]5*1*10^{-3}=5*10^{-3}m^{3}[/tex]

Finally Kelvin = Celsius + 273.15, therefore 37.0C = [tex]37.0+273.15=310.15K[/tex]

Substituting this all back into the formula we get:

[tex]n=\frac{(178332)(5*10^{-3})}{(8.31)(310.15)}[/tex]

[tex]n=\frac{891.66}{2577.3465}[/tex]

[tex]n=0.346[/tex] moles (3.s.f)

Part 2 - Balancing Equation

The equation given is not balanced so we need to balance it to find the correct molar ratio. We can start by balancing the oxygens as there are less of them. We can see that there are 2 oxygen atoms on the left as denoted by 'O2' but only one on the right in 'H2O', therefore we can add a two in front of the H2O on the right side to balance the oxygen atoms:

[tex]H_{2(g)} +O_{2(g)} - > 2H_{2} O_{(g)}[/tex]

Now we have four hydrogens on the right side so we have a 2 in front of H2 on the left hand side to balance the hydrogens:

[tex]2H_{2(g)} +O_{2(g)} - > 2H_{2} O_{(g)}[/tex]

And voila! The equation is balanced and shows the correct molar ratio.

Part 3 - Calculating moles of water

As we can see from the molar ratio in the balanced equation, every mole of O2 will produce two moles of H2O- the ratio is 1:2. As we have an excess of hydrogen, we only need to worry about the amount of oxygen we have. Therefore to calculate the number of moles of water that can be made we simply need to multiple by the ratio:

[tex]0.346*2=0.692[/tex] moles of water

Part 4 - Converting to Liters

Finally, to convert our amount of moles into volume, we can use water's molecular mass to find the mass and then its density to find its volume. Water's molecular mass is 18.02gmol^-1 (2x1.01+16.00) and its density is 997kg/m^3.

m=nM (mass = no. moles x molecular mass): m=[tex]0.692*18.02=12.46984g[/tex]

rho = m/v (density = mass/volume): [tex]997=12.46984/v[/tex], therefore [tex]v=0.0125m^{3}[/tex]

Finally as mentioned above, 1 L = 1 x 10^-3 m^3, therefore the volume of water that can be made is 12.5 Liters.

the answer is that it is a

Answer:

BOD produced per 1000kg of milk processed = (1400mg/I x 240m3) / 150000kg = 0.192mg/I

Population equivalent = (0.192mg/I x 75g) / 5 = 0.576g

Explanation:

According to the claim, Balloon A, which has more blue and less orange, exhibits accurate effusion at a relative effusion rate of 1.303. (orange is 1.303 times more effused than blue).Relative rate of effusion for the orange to blue spheres = 1.531.

The process of effusion is when a gas escapes from a container through a hole that is significantly smaller in diameter than the molecules' mean free path.

Gas molecules flow through a small opening in one container and into another by effusion. Graham's law allows rates of effusion to be compared at the same temperature. Diffusion is the random molecular motion-based movement of gas molecules through one or more other types of gas.

Rate of effusion of Orange / Rate of effusion of blue

= [Mblue / Morange]^1/2

Vrms = sqrt [(3RT/M)]

Vorange / Vblue = [ Mblue / Morange]^1/2

Rate of effusion of Orange / Rate of effusion of blue

= 565/ 369

= 1.531

Thus,  Balloon A, which has more blue and less orange, exhibits accurate effusion at a relative effusion rate of 1.303.

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Answer:

Products have more potential energy than reactants.

As shown in the image.

Answer:

The ideal gas law is a formula that relates the pressure, volume, temperature, and number of moles of a gas. It can be expressed as:

PV = nRT

where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the gas constant, and T is the temperature in Kelvin.

Since the number of moles and the temperature are constant in this problem, we can rearrange the formula to solve for the pressure:

P = (nRT) / V

Plugging in the known values, we get:

P = (nRT) / V

= (n * R * (35 + 273)) / 0.25 L

= (n * R * 308 K) / 0.25 L

We are given that the pressure is 500 mmHg and the volume is 0.25 L at this pressure, so we can set these equal:

500 mmHg = (n * R * 308 K) / 0.25 L

Solving for n, we get:

n = (500 mmHg * 0.25 L) / (R * 308 K)

We know that the pressure and volume of the gas at its original state are what we are trying to solve for. Let's call the original pressure P_0 and the original volume V_0. We can then express the relationship between the original and final state of the gas as:

P_0 * V_0 = n * R * T

Substituting the expression we found for n and the known values, we get:

P_0 * V_0 = ((500 mmHg * 0.25 L) / (R * 308 K)) * R * 308 K

Solving for P_0, we get:

P_0 = (500 mmHg * 0.25 L) / (R * 308 K) * (R * 308 K) / V_0

= (500 mmHg * 0.25 L) / (V_0)

Since V_0 = 0.5 L, we can substitute this value to get:

P_0 = (500 mmHg * 0.25 L) / (0.5 L)

= 500 mmHg / 2

= 250 mmHg

Therefore, the original pressure of the gas was 250 mmHg.

When the conductivity is at a minimum, the true thing about the amount of Ba(OH)₂ is that the amount of the two reactants are the same when conductivity is low.

The ability of an aqueous solution to carry an electric current is measured by its conductivity. Ionic strength is measured by conductivity monitors. In automated chromatography systems, conductivity is the main input control parameter used to enable the generation of salt gradients or to control buffer dilution or in-line buffer preparation.

Conductivity monitors can be used to automate and monitor cleaning and equilibration procedures. It's important to remember that temperature affects measurements of conductivity and pH.

When conductivity is low, the amounts of the two reactants are equal. Between the reactants, there are no excesses. The aqueous solution cannot dissolve the precipitate BaSO₄. Since there are no ions, the conductivity is at its lowest.

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Complete question

The Ba(OH)₂ dissociates as Ba+2 + 2 OH-. H₂SO₄ dissociates as 2 H+ + SO₄-2. When the conductivity is at a minimum, what must be true about the amount of Ba(OH)₂ compared to H₂SO₄

Answer: on

Explanation:5

The price of sodium chloride per 5 kg is 179 dollars. The experiment requires 65 g of NaCl. The price of65 g or 0.065 kg is 2.3 dollars.

Sodium chloride is an ionic compound formed by the combination of sodium metal and chlorine atom. Sodium metal has extra one electron in its valance shell and chlorine needs one more electron into its valence shell. Hence sodium donates its valence electron to chlorine forming NaCl.

NaCl is used as the table salt in food. It is a very important compound in our daily diet. Similarly NaCl is industrially important for many reaction especially in electrochemical processes.

It is given that, the price of 5 kg of NaCl = $179

required mass of NaCl = 65 g = 0.065 Kg

then , price of 0.065 kg = (0.065 × 179 /5) =  $2.31

Therefore, the cost of NaCl in the experiment is 2.31 dollars.

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it reflects back into the glass with a 45 degree angle of reflection.

The direction of the light changes as it passes through the air-water barrier. Refraction is the name for this phenomenon. Filling a glass with water and inserting a straw will make it simple to see. It will seem as though the straw is shattered.

Because light travels at a different speed in air and water, refraction takes place. The electromagnetic properties of a specific medium, which differ for air and water, determine the speed at which a light wave propagates in that medium. The speed of light in the air is very near to the vacuum's speed of light, which is 3*108 m/s. The speed of light is slower underwater. Consequently, The direction of the light changes as it passes through the air-water barrier. Refraction is the name for this phenomenon. Filling a glass with water and inserting a straw will make it simple to see. It will seem as though the straw is shattered.

A form of break occurs in the wavefront of propagating light when it encounters the air-water barrier, causing the ray of light to diverge from its original path. (Please go to the reference link for a more thorough explanation and instructions on how to calculate the light's refraction angle.)

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Long-term (months or years) high blood sugar levels can cause irreversible harm to organs such the kidneys, blood vessels, eyes, nerves, and nervous system. Speak with your doctor or the diabetes care team if you frequently have hyperglycemia.

If left untreated, having excessive blood sugar levels for an extended length of time might lead to major health issues. In addition to raising the risk of heart disease, stroke, kidney illness, vision issues, and nerve issues, hyperglycemia can harm the blood arteries that provide blood to essential organs.

A high-fat, high-calorie, and high-cholesterol diet

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The hybridization of C in HCN is sp because, carbon is triple bonded to the nitrogen. Hybridization of N in HCN is also sp. Hybridization of nitrogen in NH₄ is sp³.

When tow atoms combines to form a molecules, the energy of individual atomic orbitals redistribute to form  hybrid orbitals of  equivalent energy. The type of hybridization s based on the on the involvement of s, p or d orbitals of the atom.

In HCN, carbon is triple bonded to nitrogen. Here, both s and p orbital contribution is 50%. Hence, both C and N in HCN in sp hybridized.

In NH₄, the nitrogen is sigma bonded to each hydrogen and the hybridization of N is sp³ here since, 3 p orbitals of nitrogen and one s orbital are involved.

In CH₃-,  C is sp² hybridized and in CH₃⁺ , C is sp³ hybridized. The C in C(CH₃)₄ is also sp³ hybridized where carbon involves sigma bonds with the methyl groups.

N in NH₃ is sp³ hybridized. Oxygen in water is sp² hybridized. When water abstracts one more proton forming H₃O⁺ , oxygen forms sp³ hybridized orbitals.

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The IUPAC name of the following organic compounds are,a) hept-2-one b) hept-4-one c) heptanal d) diphenylmethanone e) propan-1-one f) acetone g) 3-bromo-1-hexanal h) 3-phenylprop-2-enal i) 2,4-hexdiene-1-al.

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 have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.

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Answer:

Get a controlled environment, such as a pool or even a bowl. Pour some oil in it then you can test your solutions without causing any damage.

Explanation:

Answer:

Volume of O₂ = 200cm³

Explanation:

Rate of diffusion of gas is directly and inversely proportional to the volume and time taken for the gas to diffuse completely.

Volume

R = -----------

time

let R₁ represent the rate at which the given volume of hydrogen gases diffuses and R₂ represent the rate at which the the volume of the oxygen gas diffused.

V₁, V₂, T₁ and T₂ follows the same process

If the two gases diffuses at the same rate, then;-

R₁ = R₂

V₁ V₂

---------- = ------------

T₁ T₂

V₂

10 = ----------------

20

V₂ = 20•10

V₂ = 200cm³

Therefore, the volume of oxygen that could diffuse in 20 seconds is 200cm³

The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, 0.025  is the number of moles of K+ ions are present in 250 mL of a 0.4M KCl solution.

Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.

Mathematically,

Molarity= number of moles of solute/volume of solution in litre

Substituting values in equation 1

0.4M=number of moles of solute/0.25

number of moles of solute=0.025moles

Therefore, 0.025  is the number of moles of K+ ions are present in 250 mL of a 0.4M KCl solution.

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The flame test used for to identify an unknown sample by its emission spectrum

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Answer: to identify an unknown sample by its emission spectrum

Explanation:

Answer:

That would be A sir or Miss

Explanation: Tell me if I am wrong, Also hope this helped you!

The mass of a 8.45 m3 piece of copper is 7537.4 grams.

Mass is described as a dimensionless quantity representing the amount of matter in a particle or object.

density of copper =8.92g/cm^3

volume = 8.45 x 100 cm^3

mass =  (8.45 x 100) x 8.92

mass = 7537.4 grams.

The relationship between mass, density and volume is that density offers a convenient means of obtaining the mass of a body from its volume or vice versa.

This means that the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).

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Answer:

fossil fuels

Explanation:

Well I had some topics on this stuff last quarter in science and from what I can remember it should be fossil fuels I think that fossil fuels are technically renewable but they are considered non-renewable since they are either in small supplies, are hard to obtain or take a long time to form.