I have pressure of 65 kPa and starting temperature of 25°C. If I raise the temperature to 167°C, what is the new pressure? (Equation: K= 273 +°CO 90 KPaO 100 kPaO 96 kPaO 97 kPa

Answer

n = 2, l = 0, ml = +2, ms = -1/2

n = 3, l = 1, ml = +1, ms = +1/2

Explanation

In atoms, there are a total of four quantum numbers namely;

The principal quantum number (n), n = 1, 2, 3, ....

The orbital angular momentum quantum number (l), for n = 3, l = (n - 1) = 0, 1, 2, The magnetic quantum number (ml), for l = 2, ml = (-l, 0, +l) = -2, -1, 0, +1, +2, and The electron spin quantum number (ms), ms = -1/2, +1/2

Therefore, the following sets of quantum numbers contains an error among the given sets:

n = 2, l = 0, ml = +2, ms = -1/2

n = 3, l = 1, ml = +1, ms = +1/2

Answer: B,C,not sure,A,C

Explanation:

Answer:

P2S5

Explanation:

This answer is pretty much asking for two numbers that are mutually prime and have a ratio of 0.25 to 0.625
0.25 = 1/4
0.625 = 5/8

the ratio of 0.25 to 0.625 would thus equal 1/4:5/8 which is 0.4
So, two numbers that are mutually prime and divide to 0.4
Set up the equation:
x/y = 0.4 where x is the moles of red phosphorus and y is the moles of sulfur.
With some trial and error, it's easy to find out that 2 and 5 are the solutions.
Since x = 2 and y = 5, the subscripts for the PxSy compounds are found.
P2S5 would be the empirical formula

Assuming the pressure remains same, we can use Charles' Law here

i.e.

Here, V1 = 7.5 l, T2 = 35 +273= 308 K

T2= 45+273 = 318 K, we need to find V2

Based on the volume and density of the barium sample, the mass

of the sample of barium mass  14.48 g.

The mass of a substance is the quantity of matter present in a substance.

The unit of mass is kg.

The volume of a substance is the amount of space covered by the substance. The unit for volume is a liter, cubic meter, or cubic centimeter.

The density of a substance is the ratio of the mass and volume of that substance.

The mass of the barium sample is calculated as follows:

The volume of the sample of barium = 4.00 cm³

The density of barium is 3.62 g/cm³

mass of the barium sample = 4.00 cm³ * 3.62 g/cm³

Mass of the barium sample = 14.48 g

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The patterns of acid rain is best explained on the basis of it's ph observations.

Rain or any other form of precipitation that is unusually acidic, is referred to as acid rain (low pH). The Northeastern United States contains the regions with the highest levels of acidity (lowest pH values). The Northeast's concentration of industrial and power facilities, numerous cities, and dense population are to blame for this trend of high acidity.

Infrastructure, marine life, and plants can all be harmed by acid rain. Sulfur dioxide and nitrogen oxide emissions cause acid rain by reacting with the water molecules in the atmosphere to create acids. It has been noted that acid rain also has negative effects on forests, freshwaters, and soils. It also kills insect and aquatic life-forms, damages structures, and has an effect on human health.

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Among the following travelling objects, which has the shortest de Broglie wavelength, Neon atom (mass 3.4×10-26 kg) traveling at a speed of 3×10³ m/s.

What is de Broglie wavelength?

The de Broglie wavelength is an important term to understand when studying quantum mechanics. The de Broglie wavelength () is the wavelength () associated with an item in relation to its momentum and mass. The de Broglie wavelength of a particle is usually inversely related to its force.Matter is thought to have a wave-particle dual nature. De Broglie waves, named after the discoverer Louis de Broglie, are the characteristics of a material item that fluctuates in time or space while acting like waves. It is sometimes referred to as matter-waves. It is very similar to the dual nature of light, which has been empirically demonstrated to act as both a particle and a wave.

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The average atomic mass of chromium with three isotopes is 52.08amu (option C).

Average atomic mass is the weighted average of the atomic masses of the naturally occurring isotopes of an element.

The average atomic mass of an isotopic element can be calculated as follows:

Average atomic mass = (80% of 52) + (14% of 53) + (6% of 51)

Average atomic mass = 41.6 + 7.42 + 3.06

Average atomic mass = 52.08amu.

Therefore, 52.08amu is the average atomic mass of the chromium isotopes.

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There are two atoms with mass numbers of 2 best describes the mass numbers of the atoms in the reaction

The sum of protons and neutrons in an atomic nucleus is known as the mass number, often known as the atomic mass number or nucleon number. It roughly equates to the atom's atomic mass given in atomic mass units.

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Calcium carbonate deposits in heating elements can be eliminated by way of cleansing these with an acid (like vinegar or lemon juice). This acid will react with the calcium carbonate to provide salt, water, and carbon dioxide gas.

Calcium carbonate is a nutritional supplement used whilst the amount of calcium taken in the weight loss plan is not enough. Calcium is needed via the frame for healthful bones, muscle groups, anxious devices, and the heart. Calcium carbonate also is used as an antacid to relieve heartburn, acid indigestion, and a disillusioned stomach.

Calcium carbonate is the salt of a sturdy base (due to the presence of the calcium ion) and a vulnerable acid (because of the presence of the carbonate ion, generally derived from carbonic acid). consequently, this salt is mildly basic in nature.

Calcium carbonate reacts with water that is saturated with carbon dioxide to shape the soluble calcium bicarbonate. This response is essential in the erosion of carbonate rock, forming caverns, and results in difficult water in lots of regions.

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There is a partial pressure for each gas in a mixture of gases, which is the pressure that would exist if that gas alone filled the whole volume of the initial combination at the same temperature.

One of two methods can be used to compute partial pressures:

Use PV = nRT to calculate the individual pressure of each gas in a mixture.

Utilizing the mole fraction of each gas, determine the proportion of pressure from the total pressure that may be ascribed to each individual gas.

When attempting to predict gas movement, partial pressure must be taken into account. Recall that the pressure of gases usually equalizes across nearby locations. From one area with a greater partial pressure to another with a lower partial pressure, a gas will move.

By dividing the mole fraction by the total pressure of a gas, one can calculate its partial pressure. Since it is based solely on the quantity of particles present rather than the nature of the gas, the Ideal Gas Equation remains true for mixes of gases just as it does for pure gases.

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The energy for the x-ray photon is 1.619x10⁻³³ kJ.

The quantitative characteristic that is conveyed to a body or to a physical system in physics is called energy. Energy can be observed in the performance of labor as well as in the form of heat and light. Energy is a limited resource that can only be changed from one form to another and cannot be created or destroyed, in accordance with the principle of energy conservation.

The SI's (International System of Units) unit of energy measurement is the joule (J). Common types of energy include the kinetic energy of a moving object, the potential energy of a stationary object, the elastic energy of a stationary object, the chemical energy associated with chemical reactions, the radiant energy of electromagnetic radiation, and the internal energy of a thermodynamic system.

Given, frequency of photon (v) = 2.4x1018 s⁻¹

Planck's constant (h) = 6.63x10⁻³⁴ J s

Energy (E) = h x v = 6.63x10⁻³⁴ x 2.4x1018

                 = 1.619x10⁻³⁰ J

                 = 1.619x10⁻³³ kJ

Hence, the energy for the x-ray photon with a frequency of 2.4x1018 s⁻¹ is 1.619x10⁻³³ kJ.

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The molecular geometry of CF4 is tetrahedral because it has all fluorine atoms in the surrounding.

The volume of the gas will be 8.501 L

What is combined gas law?

The combined gas law combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant.

i.e.

                                   P1V1/T1 = PV2/T2

Where P1 = Initial pressure

V1 = Initial volume

T1 = initial temperature

P2 = Final pressure

V2 = Final volume

T2 = Final temperature

In the question, we know

 P1V1/T1 = PV2/T2

417 × V1  = 576 × 4.78

   497             386

417 × 386 × V1 = 576 × 4.78 × 497

V1 = 576 × 4.78 × 497

            417 × 386

V1 = 8.501 L

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The complete question is :

When the pressure changes from 417 mm Hg to 576 mm Hg, the volume changes from _______L to 4.78 L and the temperature changes from 497 K to 386 K.

Answer:

The cup of hot chocolate.

Explanation:

Thermal energy is measured based on the amount of kinetic energy in an object. Thus, concluding that the cup of hot chocolate contains more kinetic energy than the cup of cold chocolate milk.

Hope this helps!

(btw, brainliest would be appreciated! Thanks!

the correct answer is electrons

The moles of water produced by the reaction of 1.1mol of ammonia with oxygen gas will be 1.65moles.

According to given reaction in the question,

2NH₃(g) + 5/2O₂ --- 2NO(g) + 3H₂O(g)

1.1mole

We know,

mole of H₂O ÷ coefficient of H₂O = mole of NH₃ ÷ coefficient of NH₃

mole of H₂O ÷ 3 = 1.1 ÷ 2

moles of H₂O = 1.65 or 1.6 moles

Therefore, the moles of water produced by the reaction of 1.1mol of ammonia with oxygen gas will be 1.65moles.

When the gaseous ammonia reacts with the oxygen we obtain nitrogen monoxide and water vapour. This reaction is a combustion reaction as well as a red-ox reaction.

Moreover, it is an exothermic process as a large amount of heat is liberated.

An oxidation-reduction(redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species.

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The total pressure would be 1189 atm.

What is pressure?

pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed .

Sol-the reaction is -

4C3H5(NO3)3--->6N2+O2+12CO2+10H2O

As we have the volume of TNT .we must know the density to find out the mass and then, apply molar mass to calculate mole.

TNT density = 1.654 g/mL

Density = mass / volume

1.654 g/mL = TNT mass / 50mL

1.654 g/mL . 50mL = TNT mass → 82.7 g

Mass / Molar mass = Mol → 82.7 g / 227.1 g/m = 0.364 mole

Now, we can calculate all the mole for the formed gases.

4 mole of TNT produce 6 mole N₂ ___ 1 mol O₂ __ 12 mole dioxide __ 10 mole of water

0.364 mole of TNT will produce:

- (0.364  . 6) /4 = 0.546 mole of produced nitrogen

- (0.364 . 1) /4 =  0.091 mole of produced oxygen

- (0.364 . 12) /4 = 1.092 mole of produced dioxide

0.364 . 10) /4 = 0.91 mole of produced vapour of water.

Total mole = 0.564 + 0.091 + 1.092 + 0.91 = 2.657 mole

Let's apply the Ideal Gases Law to find the total pressure, at STP

In STP, pressure is 1 atm for 1 mole at 273K, in a volume of 22.4 mL

But we have a volume of 50mL, and we have 2.657 total mole

Don't forget to convert 50 mL to L, cause the units for R

50 mL = 0.050L

P . 0.050L = 2.657 mol . 0.082L.atm/mol.K . 273K

P = (2.657 mol . 0.082L.atm/mol.K . 273K) / 0.050L

Thus

P=1189 atm

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Explanation:

For this question, we need to know that:

Magnesium is Mg

Silver Nitrate is AgNO3

So the complete and balanced reaction is:

Mg + 2 AgNO3 → Mg(NO3)2 + 2 Ag

Also, we need to know that is it a single replacement equation.

Single replacement reactions are those that occur between a compound substance (made up of more than one chemical element) and a simple substance (made up of only one type of chemical element), giving rise to another simple substance and another compound.

Generically, we have:

A + CD → AC + D

This is the case of this reaction.

Answer:

Determine the reaction type

Single replacement.

Finish the word equation

Magnesium + Silver Nitrate → Magnesium nitrate + silver

Write a balanced chemical reaction

Mg + 2 AgNO3 → Mg(NO3)2 + 2 Ag

For single replacement state the transfer of electrons

Electrons are transferred from magnesium to silver.

The answer in scientific notation for the following operation is 2.5 × 10⁻⁴

What is scientific notation?

It is a way of writing very large or very small numbers. A number is written in scientific notation when  number between 1 and 10 is multiplied by  power of 10.

To determine the power or exponent of 10,

we must follow the rule listed below:

5.0×10⁻⁵ + 2.0×10⁻⁴

= 5×10⁻⁵ + 2×10⁻⁴

= [tex]\frac{5}{10^{5} } + \frac{2}{10^{4} }[/tex]

= [tex]\frac{5}{100000} + \frac{2}{10000}[/tex]

= 0.00005 + 0.0002

= 0.00025

= [tex]\frac{2.5}{10000}[/tex]

= [tex]\frac{2.5}{10^{4} }[/tex]

= 2.5 × 10⁻⁴

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ANSWER

Coefficient = 2.49

Exponent = -2

STEP-BY-STEP EXPLANATION:

From the question provided, you are asked to simplified the below expression

The expression can be re-arrange below as

Therefore, the coefficient is 2.49 and the Exponent is -2

The question requires us to determine the molecular mass of the compound thorium sulfate (Th(SO4)2), considering the atomic masses to the tenth of a gram.

The atomic masses of the elements present in the molecule given are:

Th: 232.0 u

S: 32.1 u

O: 16.0 u

To obtain the molecular mass of the compound, we must consider the number of atoms of each element: there are 8 oxygen (O) atoms, 2 sulfur (S) atoms and 1 thorium (Th) atom, therefore we calculate the mass as:

molecular mass Th(SO4)2 = (1 * 232.0) + (2 * 32.1) + (8 * 16.0) = 424.2 g/mol

Therefore, the molecular mass of Th(SO4)2 is 424.2 g/mol.

Answer:

Rights

Explanation:

Every human has their rights such as those stated. These rights are what is protected by law.

To know the element with eletronic configuration 2.8.6 we need to:

First:

do the eletronic distribution - 1s² 2s² 2p⁶ 3s² 3p⁶

The volume of 0.130M HClO₄ required to react with 44ml of  8.5 x 10⁻²M NaOH to neutralize it is 28.76ml.

Let us first write the reaction of HClO₄ and NaOH,

HClO₄ + NaOH → NaClO₄ + H₂O

According to the reaction,

one moles of HClO₄ reacts with one mole of NaOH completely to form NaClO₄ and H₂O.

As we know,

Molarity = number of moles of solute/volume of solution

Moles = Molarity x Volume

So, we can write,

Moles of HClO₄ = Moles of NaOH

V x 0.130 = 44 x 8.5 x 10⁻²

Here,

V is the volume of HClO₄ (in ml),

V = 44 x 8.5 x 10⁻²/0.130

V = 28.76ml

Amount of HClO₄ required is 28.76ml.

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If the equilibrium constant for the reaction 2 HF (g) ⇄ H₂ (g) + F₂ (g) is 0.270 than equilibrium constant for the equation ¹/₂ H₂ (g) + ¹/₂ F₂ (g) ⇄ HF (g) is 1.924.

Initial equation is 2 HF (g) ⇄ H₂ (g) + F₂ (g)

Final equation is ¹/₂ H₂ (g) + ¹/₂ F₂ (g) ⇄ HF (g)

On reversing the equation of reaction, the equilibrium constant of the reversed reaction is inverse of the equilibrium constant of the forward reaction.

For reaction H₂ (g) + F₂ (g) ⇄ 2HF (g), equilibrium constant will be inverse of 0.270. Let the equilibrium constant of reaction  H₂ (g) + F₂ (g) ⇄ 2HF (g) be K₁. Then, the Value of K₁ is given as

K₁ = 1 ÷ 0.270 = 3.7037

On changing the stoichiometric coefficient by a factor let's say x, then the equilibrium coefficient of the changed reaction is the equilibrium constant of the unchanged reaction raised to the power x.

According to the question, the value of x is ¹/₂. So, the equilibrium constant of reaction ¹/₂ H₂ (g) + ¹/₂ F₂ ⇄ HF (g), will root of K₁. Let the equilibrium constant of the reaction ¹/₂ H₂ (g) + ¹/₂ F₂ ⇄ HF (g) be K₂. Then, the value of K₂ can be given as

K₂ = √K₁

K₂ = √3.7037

K₂ = 1.924

Hence the value of the equilibrium constant for the final reaction ¹/₂ H₂ (g) + ¹/₂ F₂ ⇄ HF (g) is 1.924

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Carbocation intermediate in an electrophilic addition reaction of HCl with two different alkenes and the structural formulas for both of the alkenes are 1,3 dimethyl butene

Carbocation is the molecule in which the carbon has the positive charge and three bond and it is an organic molecule, an intermediate, that forms as a result of the loss of two valence electrons, normally shared electrons, from a carbon atom that already has four bonds

Here given diagram is attached and is a carbocation intermediate in an electrophilic addition reaction of HCl with two different alkene and then two alkenes are form which is 1,3 dimethyl butene and given below the structure formula for 1,3 dimethyl butene

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The kind of orbitals precisely found in the principal energy level n=2 are the one 2s orbital and three 2p orbitals

It follows that in the electronic configuration of elements describes the distribution of electrons of elements is shared into different energy levels through the orbitals.

In the second orbital, there are actually four different types of orbitals which are found here, these are:

The position of elements in the periodic table is largely based on the shared electrons of atoms which are being technically distributed at various level.

An element is a substance which cannot be split into different forms by ordinary means. Electrons revolve around the orbits of atoms of elements.

So therefore, from the given explanation above, it can be deduced that the the second energy level has four different orbitals.

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