a sample of gas initially has a volume of 3480 ml when the temperature was -15c and has a pressure of 345 torr. what volume will the sample have if the gas pressure changes to 1.05 atm while the temperature is increased to 36 c?

The balanced chemical equation between pottasium and chlorine is as follows: 2K + Cl₂ → 2KCl. It is a combination reaction.

A chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

According to this question, a chemical reaction occurs between potassium metal and chlorine gas to form pottasium chloride as follows:

2K + Cl₂ → 2KCl

The chemical reaction is a combination reaction because it involves the combination of two elements to form a compound.

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Answer:

(b)  19.9 moles

Explanation:

To convert from moles Al to moles O₂, you need to multiply the given value by the mole-to-mole ratio of each component. This ratio is constructed via the coefficients in the balanced reaction. The desired unit (moles O₂) should be placed in the numerator to allow for the cancellation of units.

2 Al₂O₃ ----> 4 Al + 3 O₂
                    ^         ^            

26.5 moles Al           3 moles O₂
---------------------  x  ----------------------  =  19.9 moles O₂
                                 4 moles Al

The volume of the second vessel is approximately 322.7 mL.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P₁ × V₁)/T₁ = (P₂ × V₂)/T₂

where P₁, V₁, and T₁ are the initial pressure, volume, and temperature, respectively, and P₂ and V₂ are the final pressure and volume, respectively.

First, we need to convert the temperatures to Kelvin, which is done by adding 273.15 to the Celsius temperature:

T₁ = 40.0 + 273.15 = 313.15 K

T₂ = 0.0 + 273.15 = 273.15 K

Next, we can plug in the given values and solve for V₂:

(P₁ × V₁)/T₁ = (P₂ × V₂)/T₂

(895 torr × 550.0 mL)/313.15 K = (745 torr × V₂)/273.15 K

Simplifying and solving for V₂, we get:

V₂ = (745 torr × 550.0 mL × 313.15 K) / (895 torr × 273.15 K)

≈ 322.7 mL

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Answer:

A I did this and got an 100 eazy

Answer:

hi I believe the answer is (C)

Explanation:

I'm not 100%, sure if (C) is the right answer sorry I just have a feeling that's it (C) and also after I did a little tad bit of research but I'm sorry if it isn't right. ( well I'm going to go to sleep.,. I hope you get a good grade in your assignment:>)

Based on the given information, we know that the sample size is 100 and the mean amount of time spent reading for pleasure each week by engineers in a consulting firm is 1.4 hours.

Based on the given information, we know that the sample size is 100 and the mean amount of time spent reading for pleasure each week by engineers in a consulting firm is 1.4 hours. Three interns independently calculated different two-sided confidence intervals of the true mean amount of time for all engineers in the company.
Without knowing the actual values of the confidence intervals, it's difficult to determine which intern's interval is more accurate. However, it's important to note that the confidence interval is a range of values that is likely to contain the true mean. The confidence level indicates the probability that the true mean falls within that range.
For example, if the confidence level is 95%, there is a 95% chance that the true mean falls within the interval. A wider confidence interval will have a higher probability of containing the true mean, while a narrower interval will have a lower probability.
In order to determine the accuracy of each intern's confidence interval, we would need to know the sample size, standard deviation, and level of confidence used to calculate the intervals. However, it's important to keep in mind that the true mean may differ from the sample mean due to various factors, such as sampling error or bias.

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Answer:

Magnesium Difluoride

Explanation:

Mg = magnesium

F = fluoride

F2 = difluoride (prefix "di" indicates 2)

Answer: Out of the given species, the diamagnetic species are: Si, Ba2+ as they have all their electrons paired in their orbitals, so there are no unpaired electrons to get attracted by an external magnetic field.

Explanation:

Diamagnetism and Paramagnetism are two of the types of magnetism that exist in nature. Diamagnetism arises from a material's electrons' orbital motion in conjunction with one another, causing the magnetic field to cancel.

Diamagnetic materials have a weak, negative magnetic susceptibility, and they experience a repulsive force when in a magnetic field.Paramagnetic materials have a positive magnetic susceptibility, and they get weakly magnetized when exposed to a magnetic field.

The paramagnetism in these materials results from the presence of unpaired electrons in their orbitals.

Therefore, out of the given species, the diamagnetic species are: Si, Ba2+ as they have all their electrons paired in their orbitals, so there are no unpaired electrons to get attracted by an external magnetic field.

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Answer:

A

Explanation:

beacause in both the electronegativity values and number of first she'll electrons

In group 14 from top to bottom there are changes in both the electronegativity values and atomic radii changes.

Groups in the periodic table are the columns in which elements are present which all are having same number of valence electrons.

On moving top to bottom in the 14th group of the periodic table:

Hence electronegativity values and atomic radii changes.

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Answer:

You use a magnet and the fillings will go with the magnet.

The volume of the gases after combustion would be determined by the Ideal Gas Law (PV = nRT).

W = -P(ΔV) = -650.0 torr * (Vf - Vi) = -950.0 J

where Vf is considered to be the final volume and Vi to be the initial volume.

So, Vf - Vi = -950.0 J / -650.0 torr = 1.4615 cm3

Therefore, the final volume of the gases would be

Vf = Vi + ΔV = 40.0 cm3 + 1.4615 cm3 = 41.4615 cm3

The ideal gas law states that the product of the pressure and the volume of one gram molecule of an ideal gas is equivalent to the product of the absolute temperature of gas and the universal gas constant.

Ideal gas is a theoretical gas which obeys the Ideal Gas Law at all conditions of temperature and pressure. Those gases which exist in the environment are Real Gases. Only under the situations of high temperature and low pressure, real gases follow Ideal Gas Law. Therefore, it proves that ideal gas is not a real gas.

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To solve this we must know the concept of chemical reaction. The correct option is option D that is forming or breaking of bonds.  There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved.

Chemical reaction is a reaction in which the breaking of old bond from the reactant take place while on the product side, formation of new bond take place to form product.

Therefore, the correct option is option D that is Forming or breaking of bonds take place during chemical reaction.

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Answer: There is no list in your question. But the three factors in which natural selection occurs are:

1. A struggle for existence,

2. Variation and

3. Inheritance

Explanation:

Darwin’s theory of natural selection is the way in which organisms change overtime.

These changes allow organisms to become better adapted to their environment and increase their chances for survival.

The three major factors through which natural selection occurs are:

1. A struggle for existence,

2. Variation and

3. Inheritance

Darwin’s theory of natural selection will occur if the three conditions above are met and unless these factors are in place, natural selection will not occur.

In a chromatography experiment, a mixture of red, blue, and green dyes is separated using a stationary phase and a mobile phase. The stationary phase has a length of 10 cm, and the mobile phase moves at a constant velocity of 2 cm/min. The red dye travels a distance of 6 cm, the blue dye travels a distance of 8 cm, and the green dye travels a distance of 9.5 cm.

What is the retention factor (Rf) for each dye?

Solution:

To calculate the retention factor (Rf) for each dye, we use the formula:

Rf = Distance traveled by the dye / Distance traveled by the mobile phase

For the red dye:

Distance traveled by the dye = 6 cm

Distance traveled by the mobile phase = 10 cm

Rf (red) = 6 cm / 10 cm = 0.6

For the blue dye:

Distance traveled by the dye = 8 cm

Distance traveled by the mobile phase = 10 cm

Rf (blue) = 8 cm / 10 cm = 0.8

For the green dye:

Distance traveled by the dye = 9.5 cm

Distance traveled by the mobile phase = 10 cm

Rf (green) = 9.5 cm / 10 cm = 0.95

Therefore, the retention factors (Rf) for the red, blue, and green dyes are 0.6, 0.8, and 0.95, respectively.

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Answer: Chromium has a BCC crystal structure, an atomic radius of 0.125 nm, and an atomic weight of 52.00 g/mol.
The theoretical density of chromium, which has a body-centered cubic (BCC) crystal structure, an atomic radius of 0.125 nm, and an atomic weight of 52.00 g/mol, can be calculated using the formula

D = m/V

To begin, we must calculate the volume (V) of chromium. The volume of a BCC crystal structure can be found using the formula

V = a3/2,

where a is the length of the edge of the unit cell. Since, the atomic radius of chromium is 0.125 nm, the edge length of the unit cell is 2 x 0.125 nm = 0.25 nm. Substituting this value into the formula, we get

V = (0.25 nm)3/2 = 0.015625 nm3

Now that we have the volume of chromium, we can calculate its theoretical density. The mass (m) of chromium can be found by multiplying its atomic weight (52.00 g/mol) by its molar mass (1 mol = 6.022 x 1023 g/mol). This gives us

m = 52.00 g/mol x 6.022 x 1023 g/mol = 3.125 x 1025 g.

Substituting this value for mass into the density formula, we get

D = 3.125 x 1025 g/0.015625 nm3 = 2.01 x 1027 g/nm3.

Therefore, the theoretical density of chromium is 2.01 x 1027 g/nm3.

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Answer:

It won't be good.

Explanation:

In the core of the sun, hydrogen is produced by nuclear fusion. when the sun ages, it starts to run out of the hydrogen. when it runs out, nuclear fusion can't generate heat, and then the sun expands, becoming a red giant.

When the area of the cathode electrode is doubled, the overall cell potential remains unchanged. Adding NaOH to the cathode compartment increases pH, while adding it to the anode compartment or adding water has no significant effect on cell potential.

Doubling the area of the cathode electrode does not affect the overall cell potential because cell potential is an intensive property, which is independent of electrode size. When NaOH is added to the cathode compartment, the pH increases, leading to the precipitation of Mn(OH)2 if the concentration exceeds the Ksp (2 x 10^-13). However, this has minimal impact on the cell potential.

If NaOH is added to the anode compartment or water is added, there is no significant change to the cell potential as the reaction rates remain constant and the cell potential is determined by the reduction and oxidation potentials of the redox couples involved.

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With 35.0 mL of a 0.1 M HCl solution neutralizing 25.0 mL of the NaOH solution, we find that the moles of NaOH are equal to the moles of HCl. Using this information, we calculate the molarity of NaOH to be 0.14 M.

To determine the concentration of the NaOH solution, we can use the concept of stoichiometry and the volume and concentration of the HCl solution used in the neutralization reaction. The balanced chemical equation for the reaction between HCl and NaOH is:

HCl + NaOH → NaCl + \(H_{2} O\)

From the equation, we can see that the mole ratio between HCl and NaOH is 1:1. This means that the number of moles of HCl used in the reaction is equal to the number of moles of NaOH present in the solution.

Given that it takes 35.0 mL of a 0.1 M HCl solution to neutralize 25.0 mL of the NaOH solution, we can use the equation:

Moles of HCl = Molarity of HCl × Volume of HCl solution

Moles of NaOH = Moles of HCl

Molarity of NaOH = Moles of NaOH / Volume of NaOH solution

Substituting the given values:

Moles of HCl = 0.1 M × 35.0 mL = 3.5 mmol

Moles of NaOH = 3.5 mmol

Volume of NaOH solution = 25.0 mL = 0.025 L

Molarity of NaOH = (3.5 mmol) / (0.025 L) = 140.0 mmol/L = 0.14 M

Therefore, the concentration of the NaOH solution is 0.14 M.

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The presence of 18O in the ortho-carboxy-substituted phenol indicates that the ortho-carboxy group is an intramolecular nucleophilic catalyst in the hydrolysis of aspirin, while the absence of 18O indicates that the ortho-carboxy group is an intramolecular general-base catalyst.

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Answer:

Any unapposed interaction that will change the motion of an object.

Explanation:

My physics teacher had us write this down last week.

The volume of 3.01×10^23 molecules of O2 gas at STP is approximately 11,200 cm^3. This is calculated using the ideal gas law equation and converting from liters to cm^3.

At standard temperature and pressure (STP), the volume of 3.01×10^23 molecules of O2 gas can be calculated using the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

At STP:

- Pressure (P) = 1 atmosphere (atm)

- Temperature (T) = 273.15 Kelvin (K)

- Ideal gas constant (R) = 0.0821 liter·atm/(mol·K)

To find the volume (V) in cm^3, we need to convert it from liters. There are 1000 cm^3 in 1 liter.

First, calculate the number of moles (n):

n = (3.01×10^23 molecules) / (Avogadro's number)

Using Avogadro's number (6.022×10^23 mol^-1):

n = (3.01×10^23 molecules) / (6.022×10^23 mol^-1)

n ≈ 0.5 moles

Now we can calculate the volume (V):

V = (nRT) / P

V = (0.5 mol) * (0.0821 liter·atm/(mol·K)) * (273.15 K) / (1 atm)

V ≈ 11.2 liters

Converting liters to cm^3:

V_cm^3 = V * 1000

V_cm^3 = 11.2 * 1000

V_cm^3 = 11,200 cm^3

Therefore, the volume of 3.01×10^23 molecules of O2 gas at STP is approximately 11,200 cm^3.

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Answer:  The biology or linguistic  term?

Explanation: The introduction of a plant or animal to a region where it is not indigenous.

In Science, went to atom slam together to form a heavier atom this phenomena is called fusion.

Went two atoms slam together to form a heavier item this process is called nuclear fusion in science.

When they are to unstable atoms they combine with each other in order to form a stable atom that is much more heavier.

In the process of recombination energy is released by the items which can be given by the mass energy equivalence,

E = ∆mc²

Where,

∆m is the change in mass during the recombination and c is the speed of light.

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Three methods that are used to represent the arrangement of electrons in atoms are orbital diagrams, electron configurations, and electron-dot symbols.

Orbital diagrams: Orbital diagrams represent electrons as arrows pointing up or down to indicate their spin in a box representing the orbital. In the electron configuration, the diagram shows all the electrons of an atom, grouped into levels and sublevels.

Electron configurations: An electron configuration is a method of representing how electrons are distributed among the atomic orbitals of an atom or a molecule. The electronic configuration of an atom describes the number and arrangement of electrons in its atomic orbitals. Electronic configurations of ions are different from those of neutral atoms. Electron-dot symbols: Electron-dot symbols are a method of representing the valence electrons of an atom or ion, used in chemistry.

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Answer:

I think the answer is 800J

Explanation:

As the kinetic energy goes down, the potential energy goes up

Answer:

1

Explanation:

one possible way its just a theory of what the answer could be

Answer:

3-a factual statement

Explanation:

A hypothesis is a factual statement to explain a set of observations.