Hey guys. I think this is called element notation. I need to find the Protons, Neutrons, Electrons, Mass number, charge, and if it is a cation/neutral/anion. I'm having a hard time doing this, any help will be appreciated

The mass of one mole of this unknown compound 'XY' is 76.26gm.

Given here, the 1 mol of unknown compund 'XY' and mass of X and Y are 35.67gm and 40.59 gm respectively.

Molar mass of XY = molar mass of X + molar mass of Y=35.67gm + 40.59 gm = 76.26gm.

We can find given mass of 'XY' compound by formula,

Mole = Given mass/Molar mass

1= Given mass /molar mass

Given mass = molar mass.

Given mass = 76.26gm.

So, the given mass of XY is equals to 76.26gm.

Mole is defined as the unit of amount of substance. The quantity of amount of substance is measured in mole as 1mol contain exactly 6.023×1023 particles or entities. Mole is calculated by the ratio of the given mass and the molecular mass of the compound.

The relation of mole and molarity is given by the formula, Molarity is equals to no. of moles of solute divided by the solution in litres. S.I unit of molarity is moles per litre.

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Due to the large specific heat capacity of water, Santa Monica Bay, off the coast of Los Angeles, experiences less seasonal temperature variation than the surrounding air.

What is specific heat capacity?

The amount of heat required to increase a substance's temperature by one degree Celsius (°C) in one gram is known as specific heat. Water has a high specific heat, which means that heating it up requires more energy than heating up other substances.

Specific heat capacity (symbol: c) in SI units is the quantity of heat in joules needed to elevate 1 gram of a substance by 1 Kelvin. J/kgK is another way to put it. It is also possible to express a specific heat capacity in terms of calories per gram of temperature in Celsius.

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The maximum values of the electric and magnetic fields is 3.42*[tex]10^{-6}[/tex] T.

Electric fields arise from the electric charges and changing magnetic fields.

An electric charge, or collection of the charges, will have an associated electric field. Any charged object placed in this field will experience an electrostatic force as field interacts with the charge of the object. Field lines represent force a positively charged particle would experience if it were in the field at that point.

A changing magnetic field can also cause the electric charges to move. This phenomenon is commonly used in the electric generators to induce electric currents in wires. The induced current can be increased by causing the larger changes in the magnetic field or by coiling the wire so that more wire is affected by the changing magnetic field.

Magnetic fields arise from the permanent magnets and electric charges in motion.

Magnets can occur naturally (such as the Earth’s magnetic field), or they can be made by magnetizing the ferromagnetic materials.

Intensity I = 1.4*[tex]10^{3}[/tex] w/[tex]m^{2}[/tex]

Total Energy density  [tex]U_{avg}[/tex] = [tex]\frac{1}{2} E_{o}E_{o} ^{2}[/tex]

a) energy density = I/C

  Therefore,  1/2 [tex]E_{o}E_{o}^{2}[/tex] = I/C

     1/2 * 8.85 * [tex]10^{-12}[/tex] * [tex]E_{o}^{2}[/tex] = 1400/(3*[tex]10^{8}[/tex])

[tex]E_{o} ^{2}[/tex] = 105.46*[tex]10^{4}[/tex]

[tex]E_{o}[/tex] = 10.27*[tex]10^{2}[/tex] N/C

[tex]B_{o}[/tex] = [tex]\frac{E_{o} }{C}[/tex] = (10.27*[tex]10^{2}[/tex])/ (3*[tex]10^{8}[/tex]) = 3.42*[tex]10^{-6}[/tex] T

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Liquid - Liquid Extraction - It a separation process comprising of the movement of a solute from one solvent to another, the two solvents being not mixable or partially mixable with each other.

Also known as solvent extraction

Organic layer is found to be at the bottom (more dense as compare to water) and aqueous layer found on the top (organic layer less dense as compared to water)  in the given liquid liquid extraction.

To find which layer in we can easily add distilled water to the funnel. Whatever layer increases in size must be the aqueous layer and the other is the organic layer.

We can also do the water drop test regarding the same.

Supercritical fluid manages all the different parameters such as temperature, pressure etc.

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moles of hydrogen present in a 43.50 ml sample at 25.5 degrees celsius and 772.8 torr are 0.0017

This problem can be solved by ideal gas law

PV=nRT

P = pressure, 772.8torr × (1atm/ 760 torr)= 1.01 atm

V = volume, 43.50mL (1L/1000mL)= 0.0435L

T = temperature, 25 deg celcius or 273 +25.5= 298.5K

R = 0.0821 (L*atm/K*mol) (constant)

We have to find out n

n= PV/RT

n= (1.01atm)(0.0435L) / (0.0821 L*atm/K*mol) (298.5K)

n= 0.0439 / 24.5

n = 0.0017

Therefore, no of moles of hydrogen are 0.0017.

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We may never know the number of people became ill or died as a result of the Chernobyl accident because cancer might not occur for many years after the exposure to the ionizing radiation.

Many of the first responders of the Chernobyl accident died within hours or days of working at the explosion site because of acute radiation sickness.

The Chernobyl accident occur in 1986 due to flawed reactor design operated by untrained personnel.

The Chernobyl did cause serious radiation sickness and contamination over a large population. Although it is difficult to determine the extent to which the negative effects of Chernobyl reached.

Radiation exposure is hazardous and impacts health of people in negative ways, causing cancer and other serious and life threatening illness. Chernobyl caused the same effects as explosions caused radioactive particles to scatter and these moved through the ecosystem through bioaccumulation.

The Chernobyl accident showed us that exposure to radiation can affect people to varying extents over different time scales.

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Answer: 106.68 cm

Explanation:

1 inch=2.54 cm

42 inches * 2.54 cm/1 in=

42 * 2.54 = 106.68 cm

Potassium will be forced out of the cell rather than into it if the combined strength of the chemical and electrical driving forces is greater.

The electrical potential gradient across the cell membrane and the concentration gradient of the permeant ion across the membrane together make up the net electrochemical driving force. The net driving force can be altered by changing either one. The potential difference across the cell membrane is known as the membrane potential of a cell, which is calculated as the inside potential minus the outside. It happens as a result of the cell membrane's ability to separate charges.

A cell's electromotive force (EMF) The highest potential difference between any two electrodes in a cell is known as the EMF.

Electrochemical forces: If the combined strength of the chemical and electrical driving forces is greater, potassium will be pushed out of the cell rather than into it.

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Answer:

adrenal

Explanation:

The adrenal glands. (I kid you not)

One molecule of sucrose is burned with oxygen to make carbon dioxide and water.

What is sucrose?

The components of the disaccharide sugar sucrose are glucose and fructose. It is produced naturally by plants and is the main component of white sugar. C12H22O11 is the chemical formula for it.

To extract and refine sucrose for human use, either sugarcane or sugar beet are employed. Crushing the cane creates raw sugar, which is subsequently delivered to other sectors to be refined into pure sucrose. Sugar mills are usually located in tropical regions near to sugarcane plantations.

C12H22O11 + 12O2 = 12CO2 + 11H2O

When one molecule of sucrose is burnt, we get 12 carbon dioxide molecules.

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A certain ore is 27.9'.9% nickel by mass.  - 28544692. kilograms of this ore would you need to dig up to have 85.0 g85.0 g of nickel.

Chemical element nickel has the symbol Ni and atomic number 28. It is a beautiful silvery-white metal with a faint golden hue. The transition metal nickel is hard and ductile. Although bigger particles of pure nickel are slow to react with air under typical conditions because an oxide layer builds on the surface and limits further corrosion, pure nickel that has been powdered to increase reactive surface area exhibits high chemical activity (passivation).

Yet pure native nickel is only occasionally found in the crust of the Earth, typically in ultramafic rocks and the interiors of bigger nickel-iron meteorites that were not exposed to oxygen during their time outside the Earth's atmosphere.

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The final pH of a solution is 5.02 made by the addition of 10 ml of a 0.5 m NaOH solution to 500 ml.

What is pH?

The primary pH standard values are calculated using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. With the use of a glass electrode, a pH meter, or a color-changing indicator, the pH of aqueous solutions can be determined. In chemistry, agronomy, medicine, water treatment, and many other fields, pH measurements are crucial.

A scale called pH is used in chemistry to describe how basic or acidic an aqueous solution is. Lower pH values are recorded for acidic solutions (solutions with higher H+ ion concentrations) than for basic or alkaline solutions.

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The answers would be for 2nd and 3rd composites are X3Z4 and X4Z3.

The given questions is incorrect, the question is that the first emulsion has the formula X2Z3. also what is the chemical formula for alternate and also the third emulsion?

According to the question,

Mass of X in first emulsion = 1.0 g

Mass of Z in first emulsion = 0.472 g

The chemical formula of first emulsion = X2Z3

This means1.0 g of X is over to 2 intelligencers of X

= > One operative of X = 0.5 g of X.

g of Z is similar to 3 intelligencers of Z< = > one operative of Z = 0.15733 g of X.

Now for the Alternate emulsion,

Mass of X = 1.0 g

intelligencers of X = 1.0/0.5 = 2

Mass of Z = 0.420 grams

Number of intelligencers of Z = 0.420/0.15733 = 2.6695 intelligencers

rate of intelligencers of X to Z = 22.6695 = 3 4

Empirical formula of alternate emulsion = X3Z4

Now for the third emulsion,

Mass of X = 1.0 g

Intelligencers of X = 1/0.5 = 2 intelligencers

Mass of Z = 0.236 grams

Number of intelligencers of Z = 0.236/0.15733 = 1.5 intelligencers

Rate of intelligencers of X to Z = 21.5 = 4 3

Empirical formula of third emulsion = X4Z3

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Answer: sodium ethanoate

Explanation: I believe that this is correct

The mass of the second isotope is 49.08 u.

Average atomic mass is 45.737 u, while the abundance of isotope 1 is 40.149 u.

? isotope 2?

Process

1.- Determine the isotope 2 abundance: abundance isotope 1 plus abundance isotope 2 equals 100%

100 = 37.46 + abundance isotope 2

Amount isotope 2 equals 100 - 37.46 Amount isotope 2 equals 62.54

2.- Determine the mass of isotope 2. Average atomic mass = (abundance x mass isotope 1) + (abundance x mass isotope 2) 45.737 = (0.3746 x 40.149) + (62.54 x mass isotope 2) Mass isotope 2 = [45.737 - (0.3746 x 40.149)]

62.54 mass isotope 2 equals [45.737 - 15.0398] 62.54 mass isotope 2 equals 30.6972 62.54 mass isotope 2 equals 0.4908 x 100 mass isotope 2 equals 49.08 u

Isotopes are members of the same family of elements as that element but have varying numbers of neutrons. The Periodic Table's atomic number of an element is determined by the number of protons it contains. The atomic number 6 of carbon, for instance, has six protons.

Any of two or more types of chemical element atoms that have the same atomic number and essentially the same chemical behavior, but different atomic masses or mass numbers and different physical qualities

Uranium-235, uranium-238, tritium (hydrogen-3), chlorine-36, and carbon-14 are a few examples of radioactive isotopes. There are certain isotopes that have exceptionally lengthy half-lives (in the order of hundreds of millions of years). Stable nuclides or stable isotopes are the terms used to describe these isotopes.

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The density is = 2.27 g/ml.

A certain object's mass in relation to its volume is measured by its density. High density is a term used to describe materials that are exceedingly compact and have a high mass.

A substance's density is defined as its mass per unit of volume. Density is most frequently represented by the symbol, however Latin letter D may also be used. Mass divided by volume is the definition of density in mathematics:

row = m/V

where is the density, m is the mass, and V is the volume.

Given in the question:

Mass of piece of sulfur= 227g

The volume of water that has been disoplaced= (150-50)mL =100mL

We can find the density by:

Density = Mass/Volume

Density =  227/100

Density = 2.27 g/ml

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(a)The gas has a compressibility factor of 0.88 and a molar volume of 1.204 litre mol-1.

(b)The gas has a 1.12 compressibility factor and occupies a 2.682 litre mol^-1 molar volume.

What is  compressibility factor?

The compressibility factor (Z), often referred to as the compression factor or the gas deviation factor, is a term used in thermodynamics to describe how a real gas deviates from the behavior of an ideal gas. The molar volume ratio of a gas to an ideal gas at the same temperature and pressure is the simplest way to describe it.

(a) compressibility factor (Z)= Vm/Vmo

where Vm is the molar volume  and molar volume molar volume Vmo

putting the values we get :

Vm = 0.88 Vmo

Z= 0.88

therefore Vm = 0.88 x 0.0821 x 250 /15 litre mol^-1

(b) similarly we can calculate

Vm = Vmo + 0.12 Vmo

Therefore, after putting the values Z= 1.12

Vm= 1.12 x 0.0821 x 350 /12 litre mol^-1

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By using rule for dilation, scale factor used to create the bigger triangle will be (-2) when the small triangle is a pre- image.

  Coordinates of a point (x, y) dilated by a scale factor 'k' about a point (a, b) is given by,

Coordinates of the image point → [k(x - a) + a, k(y - a) + b]

Point of dilation → (2, -1)

Vertices of the smaller triangle (preimage) → (-1, -1), (2, 2) and (2, -1)

Corresponding vertices of the bigger or dilated triangle → (8, -1), (2, -7) and (2, -1)

By the rule of translation,

Image of vertex (-1, -1) → [k(-1 - 2) + 2, k(-1 + 1) - 1]

                                   → [(-3k + 2), -1]

image of the point (-1, -1) is (8, -1).

Therefore, (-3k + 2) = 8

                         -3k = 8 - 2

                          k = -2

    Hence, scale factor used to create the dilation will be (-2).

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1- butanol and (d) ethyl alcohol.

1- butanol and (d) ethyl alcohol.

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The conjugate base of the acid Nh4+ is ammonia  NH3.

What is conjugate base?

A conjugate base is the base member, X-, of two compounds that convert into one another by acquiring or losing a proton, according to a more comprehensive definition. In a chemical process, the conjugate base has the capacity to either gain or absorb a proton.

The conjugate base's formula is the acid's formula less one hydrogen. The base that reacts changes into its conjugate acid. The conjugate acid's formula is the base's formula plus one hydrogen ion.

Because it gives an H+ ion to the water, NH+4 is the acid. After that, it turns into ammonia (NH3), which is the conjugate base of NH+4.

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Answer:

has no nucleus; found in unicellular organisms

Explanation:

Hope It Helps

Sorry If I'm Wrong

Answer: Has no nucleus found in unicellular organisms

Explanation:

Prokaryotic cells are primitive cells found in lower organisms. Prokaryotic cells do not have a true cell.

A true nucleus lacks an envelope which contains the nuclear materials.

Most of the organelles lacks membrane bound organelles.

The true nucleus is lacking in prokaryotes.

Eukaryotic cells have true nucleus.

445.616 lb of CO2.

Equation for the reaction:

C8H18 + 25/2O2(g) --> 8CO2(g) + 9H2O(g)

Given:

The volume of gasoline = 25gallon

Converting gallon to ml,

25 gallon * 3.785 l/1 gallon * 1000 ml/1 l

= 94,625 ml

Density of the gasoline = 0.692 g/ml

Mass = density * volume

= 94,625 * 0.692

=  65480g

Molar mass of octane = (8*12) + (18*1)

= 114 g/mol.

Number of moles = mass/molar mass

= 65480/114

= 574.390 mol.

From the above equation, 1 mole of octane was completely burnt to give off 8 moles of CO2.

By stoichiometry,

Number of moles of CO2 = 574.390* 8

= 4595.122 mol of CO2.

Molar mass of CO2 = 12 + (2*16)

= 44 g/mol

Mass of CO2 = number of moles * molar mass

= 4595.122 * 44

=202,185.40 g

Converting g to pound,

= 202,185.40 g *1 kg/1000 g * 2.204 lb/1kg

= 445.616 lb of CO2.

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Some of them consist of two small atoms attached to a bigger one. Some are negatively charged, and consist of one big atom attached to the small one. The arrow is pointing to a hydrogen ion.

Option A is correct

The hydrogen ion is the only particle that is an atom and also carry a positive charge, i.e., a hydrogen ion is a positively charged atom.

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Question is in complete , missing part is given below :

The figure shows a solution of different molecules. Some of them consist of two small atoms attached to a bigger one. Some are negatively charged, and consist of one big atom attached to the small one. There are also small positively charged atoms, which are pointed by an arrow.

A. hydrogen ion

B. hydronium ion

C. electron

D. hydroxide ion

E. water molecule

Answer:

Tbh it doesn't look right because A D are atoms B E C are molecules.

Explanation:

The reason I think that is because E is the molecule of elements while B and C are molecules of compounds can you maybe recheck?

The correct answer is [a].The percent by mass of sodium chloride in a solution of 14.0 g of sodium chloride in enough water to make 91.0 g of solution is 15.4%.

Solution, in chemistry, homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility.

The term solution is commonly applied to liquid state of matter, but solutions of gases and solids are possible. Air, for example, is a solution consisting chiefly of oxygen and nitrogen with the trace amounts of several other gases, and brass is a solution composed of copper and zinc.

Solutions play a significant role in the processes of life. In blood plasma, oxygen from the lungs dissolves and chemically joins with hemoglobin in red blood cells before being delivered to the body's tissues. The byproducts of digestion are also transported to other bodily areas in solution. Many real-world situations can be solved by using liquids' capacity to dissolve other liquids or solids.

Chemists take advantage of differences in the solubility to separate and purify materials and to carry out chemical analysis. Most chemical reactions occur in solution and are influenced by solubilities of the reagents. Materials for chemical manufacturing equipment are selected to resist solvent action of their contents.

Percent by mass= [tex]\frac{weight of solute}{weight of solution}[/tex]*100= [tex]\frac{14}{91}*100= 15.4%[/tex][tex]%[/tex]%

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The rate of such a reaction can be written either as r=AB OR r=A2

Since the, second order reactions can be of two types described below, rate can be given by

r=A×By

It is a chemical reaction in which rate of reaction is proportional to the concentration of each of two reacting molecules.

Initial Speed (M/s)

SECOND ORDER REACTIONS

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