Which of the following statements is accurate?
A. A compound made of a metal and nonmetal is hydrophobic
B. A compound made only of carbon and hydrogen is hydrophilic
C. A compound consisting of two identical nonmetals is hydrophilic
D. A compound made of a metal and a nonmetal is hydrophilic

The concentration of the mixture would be 0.16 or 16%.

To calculate the concentration of the new mixture, you can find the total mass of sugar in each solution, then find the total mass of sugar in the mixture, and divide that by the total mass of the mixture to find the concentration.

In the 10% sugar solution, there's 200 g * 0.1 = 20 g of sugar.

In the 20% sugar solution, there's 300 g * 0.2 = 60 g of sugar.

So, in the mixture there's a total of 20 g + 60 g = 80 g of sugar.

And the total mass of the mixture is 200 g + 300 g = 500 g.

Therefore, the concentration of the mixture would be 80 g / 500 g = 0.16, or 16%.

A solution is a mixture of two or more substances in which one substance, called the solute, is dissolved in another substance, called the solvent. The solute and solvent are thoroughly combined and create a homogeneous mixture, where the solute is evenly distributed throughout the solvent. Solutions can be either liquid, gas or solid. The properties of a solution depend on the nature of the solute and solvent, as well as the concentration of the solute in the solvent. Solutions can be made by dissolving the solute in the solvent, or by mixing two or more solutions together. The solute is said to be "dissolved" in the solvent if it forms a stable mixture that does not separate over time. Solutions are important in many areas of science and technology, including chemistry, medicine, food and beverage production, and more.

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Answer: S orbitals.

Explanation:

The change of one form of energy into another form of energy is called​energy transformation or energy conversion.

Energy conversion, also termed as energy transformation, is the process of changing one form of energy into another. Energy conversion occurs everywhere and every minute of the day.

Energy transformation:

As we know that the total energy in the system remains constant. (Law of conservation of energy which states energy can neither be created nor destroyed.)

But, energy changes from one form to another.

For example, when a body is raised to a certain height, the word done is stored as potential energy. When it is released from that height, this potential energy is converted into kinetic energy.

Another example, when a tube light is turned on, the electrical energy is converted into light energy and heat energy.

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Three oxygen atoms, one nitrogen atom, and one hydrogen atom make up each nitric acid molecule. One of the oxygen atoms in HNO3 molecules is doubly linked to the central nitrogen atom. A second oxygen atom is singly linked to both a hydrogen atom and the central nitrogen atom.

How does nitric acid look on paper?

It has one hydrogen (H) atom, one nitrogen (N) atom, and three oxygen (O) atoms, giving it the chemical formula HNO3. The nitrogen (N) atom is joined to all three oxygen (O) atoms.

HNO3 is a powerful acid, so why?

The claim is that HNO3 is a more potent acid than HNO2. Reason: There are two nitrogen to oxygen linkages in HNO3 compared to just one in HNO2.

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Jerell is having a test today that is a neuroimaging technique that uses the magnetic property of certain hydrogen atoms in his brain to create a detailed picture of his brain's structure. The test  he having is MRI.

MRI was developed as a neutral neuroimaging technique that leverages the magnetic propensity of some hydrogen atoms in the brain to produce a precise image of the structure of his brain.

A magnetic field and radio waves produced by a computer are used in the medical imaging procedure known as magnetic resonance imaging (MRI) to provide precise images of your body's organs and tissues.

Utilizing quantitative (computational) tools, neuroimaging studies the structure and function of the central nervous system. It was developed as an unbiased.

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Answer:

MgF2

Explanation:

It just is.

The equation for the molar enthalpy change as a function of temperature is given by:

H = C-p * (T,f - Ti)

Where C-p is the heat capacity of the substance, T,f is the final temperature, and Ti is the initial temperature.

The heat capacity of a substance is a measure of the amount of energy (heat) required to raise the temperature of a given mass of the substance by one degree Celsius. It is often expressed in the unit of J/mol⋅K.

The molar enthalpy change can be used to determine the energy released or absorbed during a chemical reaction. For exothermic reactions, the molar enthalpy change is negative, indicating that energy has been released during the reaction. For endothermic reactions, the molar enthalpy change is positive, indicating that energy has been absorbed during the reaction.

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The balanced equation for 1 will be [tex]CS_2 + 3Cl_2 ---- > CCl_4 + S_2Cl_2[/tex].

The balanced equation for 2 will be [tex]2AgI + Na_2S -- > Ag_2S + 2NaI[/tex]

A balanced chemical equation is one in which the number of atoms of different elements in the reactions balances the number of atoms of different elements in the products.

In other words, a balanced chemical equation obeys the law of conservation of atoms.

Thus, the balanced equation for each of the equations above would be:

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Enthalpy of vaporisation for Freon 113, also known as C2Cl3F3, is 27.0 kJ/mol, and its usual boiling point is 48.0 °C. Therefore, Freon-113 has a vapour pressure of 0.77 atm.

The amount of energy (enthalpy) required to convert a portion of a liquid into a gas is known as the enthalpy of vaporisation,

abbreviated as H vap and also referred to as the (latent) heat of vaporisation or heat of evaporation.The substance's enthalpy of vaporisation is H=27.0 kJ/mol=27.0 103 J/mol.

P1=1atM is the pressure at the typical boiling point.

The chemical C2Cl3F3 has an initial temperature of T1=48.0C=48.0+273.15

The material C2Cl3F3 has an initial temperature of T2=40.3C=40.3+273.15K.

R=8.314J/Kmol is the gas constant's value.

The formula for vapour pressure is given as ln(P2P1)=HR(1T21T1)

all the plugs Vapor pressure is expressed as ln(P2P1)=HR(1T21T1)

The following results from simplifying the previous formula for the necessary vapour pressure and plugging in all the values:

(atm)=3247.53 K(321.15K113.15 K313.15K(321.15K)) where ln(P21atm)=27.0103J/mol 8.314J/Kmol (140.3+273.15K148.0+273.15K)

P21atm = ln(3247.53 K) (8100568.1225K)

ln(P21atm)=−0.25833

If we multiply each side of the equation by the exponent of base e, we get: Eln (P21atm) = e 0.25833P2 1 atm = e 0.25833 P2 = e 0.258331 atm

P2=0.77atm

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All flasks have 0.039 moles of gas. Therefore, option D is correct.

Given:

All 3 flasks have

Volume (V) = 1.00L

Pressure (P)  = 750Torr

Temperature (T) = 25°C

= 298K

As all three parameters P, V and T are identical according to Avogadro's law, all three flasks should have same number of moles irrespective of the gas.

So, all have the same number of moles.

Now, if the moles = 0.039

Using the ideal gas equation

PV = nRT

n = PV/RT

= (725/760) atm x 1.00L / 0.0821L.atm/K.mol x 298

=0.03899 mol

=0.039 mol

Thus, all flaks have 0.039 moles of gas.

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If the rate law for the chemical reaction is: rate = k [x]² , the units of the rate constant k is M⁻¹ s⁻¹.

The rate law = rate = k [x]²

The rate of the reaction is of second order. The R in the second order id the unit of the Molarity / second. The concentration x is in the molarity , M.

R in M /s = k [x in M]

By solving the equation , we get:

M / s = k M²

k = M / s. M²

k = 1 / Ms

k = M⁻¹ s⁻¹

Thus, the unit of the rate constant k is M⁻¹ s⁻¹.

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The molecular mass (u) of Phosphoric Acid (H3PO4).[H=1,P=31,O=16]  is 98U.so, option (c) is correct.

What is mass?

The term matter defines mass, and it measures matter. Mass is discovered from the different atoms and particles. Group, in simple terms, determines the weightage of the substance. Mass is expressed in the terms kilograms. Mass of the quantity is a much-needed thing in the laboratory. The quantity of the substance does the majority of the experiment. Gravity also takes place as an independent factor in calculating mass. Mass is the scalar quantity. Gravity and force are playing the independent factor in the mass. For calculating the two planet mass, know the force of the planet.

What is molar mass?

The molar mass is the substance; it helps to determine the mass of the sample substance to the atom of the sample or substance. The molar mass depends on the molecular formula and the isotopes of the atom. Molar mass is used for the inducement of electric charge. Molar mass is the measurement of the volume of the mass. The molar mass is expressed in the unit of dalton.

Molar mass is the sum of the masses of all the individual atoms present in a molecule or compound.

Orthophosphoric acid is the important acid of oxygen and phosphorous.

It is used for making phosphate salts for fertilizers.

Chemical formula of Orthophosphoric acid is H3PO4.

Atomic mass of Oxygen O is 16 u.

Atomic mass of hydrogen H is 1 u.

Atomic mass of Phosphorous P is 31 u.

Molecular mass of Orthophosphoric acid H3PO4 = (Atomic mass of Hydrogen) x 3 + (Atomic mass of Phosphorous) x 1 + (Atomic mass of Oxygen) x 4

= ( 1 x 3 ) + ( 31 x 1 ) + ( 16 x 4 )

= 3 + 31 + 64

= 98 u.

Molecular mass of Orthophosphoric acid H3PO4 is 98

Therefore,  molecular mass (u) of Phosphoric Acid (H3PO4).[H=1,P=31,O=16]  is 98U.(c).

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Here's a step to draw resonance structures in organic chemistry:

There must be genuine Lewis structures in every resonance structure. (Remember that all the guidelines that apply to Lewis structures still hold true here.) The only difference in resonance structures' atom connection and electron configuration. (Electrons move; atoms NEVER do.)

The electron count and net charge are identical for all resonance configurations. (An atom's formal charge may differ, but the net charge, which is the total of all charges, must be the same.)

Only electrons and lone pair electrons (NEVER move bonds!) can be transferred by employing one of the following three transformations to move electrons from a region with a greater electron density to one with a lower electron density:

To depict the motion of the electrons in the "original" resonance structure, use curved arrows. By following the arrows, the "new" resonance structure should be a "product" that is automatically created.

Determine the "new" structure's formal charge and note any non-zero formal charges.

example attached below

Only the electrons can move around in this example because there is only one link and no lone pairs. The low electron density region, or carbocation, is present next to the bond. As a result, it makes sense to transfer the electrons to the position next to the carbocation to create another bond, which results in the "new" structure. Here, the two resonance structures are identical.

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