Perform the following calculations in indicate whether the solution will be acidic basic or neutral

Answer:

See explanation

Explanation:

Given Einstein's theory of relativity, we have that;

E= mc^2

m= mass of the substance

c= speed of light

For one gram of the substance,

E= 1 ×10^-3 × (3 × 10^8)^2

E = 9 × 10^13 J

For 8.7 g of matter;

E = 8.7 × 10^-3× (3 × 10^8)

E= 7.83 ×10^ 14 J

Answer:

use of sterile injections for clearanti bodies

Explanation:

Answer:

Hello There!!

Explanation:

They can be used in making products that make it lightweight such as in power tools and luggages.

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Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of zinc = 96.08 cm³

density = 7.14 g/cm³

The mass is

mass = 96.08 × 7.14 = 686.0112

We have the final answer as

Hope this helps you

The ranking of acids from weakest to strongest would be: (A) HIO₂ < HBrO₂ < HFO₂ < HClO₂, (B) HIO = HIO₂ < HIO₃ = HIO₄, and (C) HF < HCl < HBr < HI.

Ranking the given acids from weakest to strongest would be done by analyzing their acidity constants. The higher the acidity constant, the stronger the acid.

a. HFO₂, HClO₂, HBrO₂, HIO₂
The acidity constants for the given acids are:
HFO₂ = 2.2 x 10⁻⁷
HClO₂ = 1.1 x 10⁻²
HBrO₂ = 2.3 x 10⁻⁹
HIO₂ = 2.3 x 10⁻¹¹

Therefore, the ranking of these acids from weakest to strongest would be:
HIO₂ < HBrO₂ < HFO₂ < HClO₂

b. HIO, HIO₂, HIO₃, HIO₄
The acidity constants for the given acids are:
HIO = 2.3 x 10⁻¹¹
HIO₂ = 2.3 x 10⁻¹¹
HIO₃ = 1.6 x 10⁻¹
HIO₄ = 1.6 x 10⁻¹

Therefore, the ranking of these acids from weakest to strongest would be:
HIO = HIO₂ < HIO₃ = HIO₄

c. HF, HCl, HBr, HI
The acidity constants for the given acids are:
HF = 7.2 x 10⁻⁴
HCl = 1.0 x 10⁶
HBr = 1.0 x 10⁹
HI = 1.0 x 10¹⁰

Therefore, the ranking of these acids from weakest to strongest would be:
HF < HCl < HBr < HI

In conclusion, the ranking of the given acids from weakest to strongest are:
a. HIO₂ < HBrO₂ < HFO₂ < HClO₂
b. HIO = HIO₂ < HIO₃ = HIO₄
c. HF < HCl < HBr < HI

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Answer:

If the gas is at STP, THE 1 mole is 22.4 liters.

Explanation:

Considering the ideal gas law, the gas will ocuppy a volume of 0.0299 L at STP.

An ideal gas is a gas made up of certain particles that, despite having a random displacement, do not interact with each other, having perfect elastic collisions without suffering attraction or repulsion. These gases are known as ideal because they have only been described theoretically, although they are useful for the analysis of real gases.

An ideal gas can be fully described by the ideal gas equation:

P×V = n×R×T

Where:

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In first place, you know:

Replacing in the ideal gas law:

0.00657895 atm× 5 L = n× 0.082 (atmL)/(molK)× 300 K

Solving:

(0.00657895 atm× 5 L)÷ (0.082 (atmL)/(molK)× 300 K)= n

1.337×10⁻³ moles= n

This number of moles will be the same although you change the pressure and temperature. For STP, you know:

Replacing in the ideal gas law:

1 atm× V= 1.337×10⁻³ moles× 0.082 (atmL)/(molK)× 273 K

Solving:

V= (1.337×10⁻³ moles× 0.082 (atmL)/(molK)× 273 K)÷ (1 atm)

V= 0.0299 L

Finally, the volume will be 0.0299 L.

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Explanation:

The heart of the doorbell is an electromagnetic so yeah it does.

Answer:

High pressures and hot temperatures force molten rock to the surface.

Explanation:

In Mount St. Helens' case, an oceanic plate called Juan de Fuca slips under the North American plate, creating the Cascadia subduction zone. A continental arc brews adjacent to the subduction zone, where high pressures and hot temperatures force molten rock to the surface. The result is a chain of volcanoes.

Answer:

Preventing erosion – Land Reclamation

Protecting nesting areas – Protecting Biodiversity

Preventing littering – Land Reclamation

Preventing habitat disruption – Protecting Biodiversity

Protecting native species – Protecting Biodiversity

Preventing contamination of soil – Land Reclamation

Explanation:

I really hope I'm right! I tried my hardest, please give me brainliest :)

have a good day!

The molality of the solution is 1.080 mol/kg of a 48 grams of MgCl2 is dissolved in 500g of water, density of water = 1 kg/1L.

Taking the moles of solute and dividing it by the kilograms of solvent yields the molality of a solution.

Molality is calculated as follows: kg of solvent/kg of solute

500 g, or 0.500 kg, is the mass of the solvent.

MgCl2 molecular weight divided by its mass gives the amount of moles.

48 g / 95.2 g m o l 1 equals the quantity of moles of magnesium chloride.

0.504 moles of MgCl2 are present in one mole.

Molality is calculated as 0.504moles per kilogram.

Molality is equal to 1.080 mol k g 1.

As stated in the definition, molality is the "total moles of a solute contained in a kilogram of a solvent." The terms "molality" and "molal concentration" are synonymous. It is a measurement of a solvent.

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The molecule with the highest molecular weight and the largest number of electrons, C₈H₁₈, is expected to have the largest dispersion forces, option (d) is correct.

The dispersion forces, also known as London dispersion forces, are a type of intermolecular force that arises due to the temporary dipoles that occur in non-polar molecules. The molecule C₈H₁₈ with the largest number of electrons and the highest molecular weight is expected to have the largest dispersion forces.

This molecule has a larger number of electrons and a larger surface area for intermolecular interactions, which results in stronger dispersion forces compared to the other molecules, option (d) is correct.

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The complete question is:

Which is expected to have the largest dispersion forces?

a. N₂

b. C₂H₆

c. CO₂

d. C₈H₁₈

Structural isomers / isomerism is an occurence whereby compounds having different structural formulae, yet have the same molecular formula.

Example : Butane is represented by two different compound with different structural formula :

C4H10 :

• Can be represented by : CH3CH2CH2CH3 ---- n-butane or

• can be represented by : CH3CH-CH3CH3 ....... iso-butane ( 2-methyl propane).

Answer:

To determine the molecular formula, we need to find the empirical formula first.

1. Find the moles of CO2 produced:

moles of CO2 = mass of CO2 / molar mass of CO2

moles of CO2 = 2.417g / 44.01 g/mol = 0.05499 mol

2. Find the moles of H2O produced:

moles of H2O = mass of H2O / molar mass of H2O

moles of H2O = 1.484g / 18.02 g/mol = 0.08232 mol

3. Find the moles of C in the compound:

moles of C = moles of CO2

moles of C = 0.05499 mol

4. Find the moles of H in the compound:

moles of H = 2 x moles of H2O

moles of H = 2 x 0.08232 mol = 0.16464 mol

5. Find the moles of O in the compound:

moles of O = (moles of CO2 x 2) + moles of H2O

moles of O = (0.05499 mol x 2) + 0.08232 mol = 0.1923 mol

6. Find the empirical formula:

Divide all the moles by the smallest number of moles to get the simplest whole-number ratio of atoms.

empirical formula = C1H3O1 or CH3O

7. Find the molecular formula:

To find the molecular formula, we need to know the molecular mass of the compound. The molecular mass is 46 g/mol. We can calculate the ratio of the molecular mass to the empirical formula mass:

molecular mass / empirical formula mass = 46 g/mol / 31 g/mol = 1.483

Round this number to the nearest whole number, and multiply the subscripts of the empirical formula by this number to get the molecular formula:

molecular formula = C2H6O2 or C2H6O2

The molecular formula of the compound is C4H4.

To determine the molecular formula of the organic compound, we need to analyze the masses of the elements present and calculate the empirical formula. Given the masses of carbon dioxide (2.417 g) and water (1.484 g) produced during combustion, we can calculate the moles of carbon and hydrogen in the compound.

Moles of carbon:

Using the molar mass of carbon dioxide (44.01 g/mol), we can calculate the moles of carbon dioxide produced:

Moles of carbon dioxide = 2.417 g / 44.01 g/mol = 0.055 moles of CO2

Since there is one mole of carbon in one mole of carbon dioxide, the number of moles of carbon in the compound is also 0.055 moles.

Moles of hydrogen:

Using the molar mass of water (18.015 g/mol), we can calculate the moles of water produced:

Moles of water = 1.484 g / 18.015 g/mol = 0.082 moles of H2O

Since there are two moles of hydrogen in one mole of water, the number of moles of hydrogen in the compound is 2 x 0.082 moles = 0.164 moles.

Now, we can determine the empirical formula by dividing the number of moles of each element by the smallest number of moles (in this case, the number of moles of carbon).

Empirical formula: C0.055H0.055/0.055 = H1

So, the empirical formula of the compound is CH.

To determine the molecular formula, we need to compare the empirical formula mass (CH = 13.02 g/mol) to the given molecular mass (46 g/mol).

Molecular formula: (46 g/mol) / (13.02 g/mol) = 3.53

Since the molecular formula must be a whole number, we round 3.53 to the nearest whole number, which is 4.

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Answer:

1.273 atm

Explanation:

We are given:

P1 = 1 atm                         P2 = x atm

T1 = 20 degree celsius or 293 k        T2 = 100 degree celsius OR 373 k

Since the volume remains constant, we don't have to talk about that

From the Gas equation:

PV = nRT

Since  number of moles (n) , Universal gas constant (R) , Volume of the gas (V) are constants

P / T = k   (where k is a constant)

Hence we can say that P1 / T1 = k --------------(1)

Also, P2 / T2  = k -------------------------------------(2)

where k is the same constant

From (1) and (2):

P1 / T1 = P2 / T2

Now, plugging the values in this equation

1 / 293  = x / 373

x = 373 / 293

x = 1.273 atm

Therefore, the pressure of CO2 after increasing the temperature to 100 degree celsius is 1.273 atm

Answer:

First you need to convert the cylinder to a boot, then you can successfully compress the water into the tip of the boot, preventing it from busting.

Explanation:

To convert a cylinder to a boot, simply multiply the circumference of the cylinder by 1.3125768927, or 1.31. The .31 is the extra space taken in by the tip of the boot.

Answer:

The concentration of the nitric acid (HNO3) solution is 72 M.

Explanation:

To determine the concentration of the nitric acid solution, we can use the concept of stoichiometry and the equation of the neutralization reaction between nitric acid (HNO3) and sodium hydroxide (NaOH):

HNO3 + NaOH → NaNO3 + H2O

The balanced equation shows that the molar ratio between HNO3 and NaOH is 1:1. This means that 1 mole of HNO3 reacts with 1 mole of NaOH.

Given:

Volume of HNO3 solution = 10.0 ml

Volume of NaOH solution = 3.6 ml

Molarity of NaOH solution = 0.2 M

To find the concentration of the HNO3 solution, we need to calculate the number of moles of NaOH used in the neutralization reaction:

moles of NaOH = volume of NaOH solution * molarity of NaOH solution

= 3.6 ml * 0.2 M

= 0.72 mmol (millimoles)

Since the molar ratio between HNO3 and NaOH is 1:1, the number of moles of HNO3 in the solution is also 0.72 mmol.

Now, we can calculate the concentration of the HNO3 solution using the formula:

concentration (in M) = moles of solute / volume of solution (in L)

concentration = 0.72 mmol / 0.010 L

= 72 mmol/L

= 72 M

Therefore, the concentration of the nitric acid (HNO3) solution is 72 M.

Answer:

log = ( - 0.51 z 2) / ( 1 + ( / 305)

Explanation:

The amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

To find the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C, we can use the equation Q = mcAT.
First, we need to find the value of m, which is the mass of the water in grams. In this case, it is given as 200 grams.
Next, we need to find the value of AT, which is the change in temperature in degrees Celsius.

This can be calculated by subtracting the initial temperature from the final temperature, which gives us 60 C - 20 C = 40 C.
The specific heat capacity of water, C, is given as 4.18 Joules per gram per degree Celsius.
Now we can plug in the values into the equation:
Q = mcAT
Q = (200 g) x (4.18 J/g°C) x (40°C)
Q = 33,440 J
Therefore, the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

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Answer:

The third electron to be removed has to be in;

n = 3

l = 2

ml = -2, -1, 0, 1, 2

Explanation:

There are four basic quantum numbers;

i) principal quantum number (n)

ii) Azimuthal, Obital or Subsidiary quantum number (l)

iii) Magnetic quantum number (ml)

iv) Spin quantum number (ms)

The electronic configuration of Fe3+ is:

1s2 2s2 2p6 3s2 3p6 3d5

The third electron to be removed has to be in;

n = 3

l = 2

ml = -2, -1, 0, 1, 2

The third electron removed in the formation of a Fe³⁺ has the quantum numbers:

Iron has an atomic number of 26, so it has the following electron configuration:

\(Fe: [Ar] 4s^{2} 3d^{6}\)

To form cations, it first loses the electrons from the outermost shell (4s). The electron configuration of Fe²⁺ is:

\(Fe^{2+} : [Ar] 4s^{0} 3d^{6}\)

Then, it will lose an electron from the highest energy level (3d) to form Fe³⁺.

\(Fe^{3+} : [Ar] 4s^{0} 3d^{5}\)

The third electron lost from Fe to form Fe³⁺ was in 3d⁶.

The third electron removed in the formation of a Fe³⁺ has the quantum numbers:

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We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.

Here's an overview of the catalytic cycle, including the necessary details:

i. Chemical structure of the catalyst:

Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]

ii. Molecular geometry of the catalyst:

The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.

iii. Type of reactions involved:

The catalytic cycle involves several reactions, including:

iv. Starting material, reagent, and solvent:

The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).

v. Major and minor end-products:

The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.

vi. Intermediates:

The intermediates in the catalytic cycle include:

These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.

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Answer

pH = 8.12

Explanation

pH = -log [H+]

pH = -log [7.60 x 10^-9 M]

pH = 8.12

The statement "All organic compounds contain the element carbon, but not all compounds containing the element 'carbon' are organic" can be justified based on the definition and characteristics of organic compounds.

Organic compounds are compounds primarily composed of carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, sulfur, and phosphorus. These compounds are typically associated with living organisms and are known for their unique properties and behavior, including the ability to form complex structures, exhibit covalent bonding, and undergo organic reactions.

On the other hand, there are compounds that contain carbon but are not classified as organic. One notable example is carbon dioxide (\(CO_{2}\)), which is a simple inorganic compound composed of carbon and oxygen. Carbon dioxide does not possess the characteristic properties of organic compounds, such as the ability to form long chains or undergo organic reactions.

Additionally, there are inorganic compounds like carbonates (such as calcium carbonate) and carbides (such as calcium carbide) that contain carbon but are not considered organic. These compounds have distinct chemical and physical properties different from those of organic compounds.

In summary, while all organic compounds contain carbon, not all compounds containing carbon are organic. The classification of a compound as organic or inorganic depends on its overall molecular structure, bonding, and characteristic properties.

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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 given statement is true. A skeleton equation shows the formulas of the compounds participating in a chemical reaction and their states of matter but not the ratio in which they react.

A skeleton equation defines the chemical formulas and physical states of the reactants and products, yet it does not account for the relative amounts of the reactants and products. Chemical reactions result simply from the rearrangement of atoms, thus the law of conservation of mass have to be observed.

Skeleton Equations are the equations where there is only chemical formula of reactants and products but no state mentioned and no balancing of atoms on either side of the equation done. For example: Mg + O2 → MgO, it is a skeleton equation. In the equation, the only thing mentioned is the chemical formula of reactant.

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Answer:

7%

Explanation:

I'd you have $44.79 you put the decimal next to the first 4 so 10% would be $4 and 20% would be $8 so 18% will be like 7

Molecules with polar bonds or specific functional groups with asymmetric vibrations are most strongly affected by infrared photons. Molecules with nonpolar bonds or symmetric functional groups that lack infrared-active vibrations are least affected.

When a photon interacts with a molecule, the degree to which the molecule is affected depends on whether the photon's energy matches the energy required to excite the molecule's vibrational modes. Infrared (IR) photons have energies that correspond to molecular vibrations, and therefore, molecules with certain characteristics are most strongly affected by them. Molecules with polar bonds or functional groups containing asymmetric stretching or bending vibrations are most strongly affected by infrared photons. Examples include water (H2O), carbon dioxide (CO2), ammonia (NH3), and various organic compounds with functional groups like carbonyl (C=O) and hydroxyl (OH). Molecules with nonpolar bonds or symmetric functional groups that lack vibrational modes in the infrared region are least affected by infrared photons. These include diatomic molecules like oxygen (O2), nitrogen (N2), and noble gases such as helium (He). Hence Molecules with polar bonds or specific functional groups with asymmetric vibrations are most strongly affected by infrared photons. Molecules with nonpolar bonds or symmetric functional groups that lack infrared-active vibrations are least affected.

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Answer:

The shape of an atom is not important so it is easier to treat atoms as spheres.

Explanation:

In considering the shape of an atom, we do not consider the shape of the orbitals individually.

Hence, we do not seek to determine the exact shape of the atom, rather we simply treat the atom as spheres. Even though most orbitals are not spherically shaped.

The measure of the length of events and the duration of intervals between events is time.

The duration of events or the gaps between them can be measured, compared, or even ordered using time. The lengthy period of time that the Earth's geologic history takes up is known as geologic time. Starting at the beginning of the Archean Eon  formal geologic time runs until the present. Geology is defined as the "Science of the Earth."

Geology is the fundamental Earth science that examines how the earth created, its structure and composition, and the various forces acting on it. It is sometimes known as geoscience or earth science.

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The amino acid phenylalanine can be made in the laboratory. Ore NH3 reagents needed to make this molecule.

Phenylalanine is a crucial amino acid with the chemical formula C 9H 11NO 2. Its symbol is Phe or F.  Reagents like benzyl group in place of the methyl group in alanine or as a phenyl group in place of the terminal hydrogen. This significant amino acid is classified as neutral and nonpolar due to the inert and hydrophobic nature of the benzyl side chain. The L-isomer is used in the biochemical synthesis of DNA-coded proteins. Precursors of phenylalanine include tyrosine, the monoamine neurotransmitters dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline), as well as the skin pigment melanin. It is encoded by the codons UUU and UUC. Phenylalanine is a substance found in animal milk. It is used to make food and drink products and is marketed as a dietary supplement due to its analgesic and depressive qualities. It is a direct precursor to the neuromodulator dietary supplement phenethylamine. Because neither humans nor other animals can synthesize phenylalanine, it must be ingested or found in proteins, making it an essential amino acid.

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Answer:

Limiting reactant

Explanation:

The limiting reactant is completely is completely consumed in a reaction since it's not in excess and does not give a good yield of the product hence an excess reactant must have reacted with limiting reactant.