What would heating a sealed glass jar do?
O A. Increase the size of the gas molecules
B. Increase the number of gas molecules
C. Increase the pressure of the gas inside
D. Increase the volume of the gas inside

The electron transition that will absorb the photon of smallest frequency (ν) is n = 6 to n = 5, as it involves the smallest energy difference between the energy levels.

When an electron in an atom absorbs a photon, it moves to a higher energy level or orbital. The energy of the photon must match the energy difference between the initial and final energy levels. The frequency (ν) of the photon is directly proportional to its energy (E), and inversely proportional to its wavelength (λ). The electron transition that absorbs the photon of smallest frequency involves the smallest energy difference between the energy levels, which is n = 6 to n = 5. This means that the wavelength of the absorbed photon will be relatively longer compared to the other transitions listed. Understanding these electron transitions is important for many applications, such as spectroscopy, lasers, and quantum computing.

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In a test tube, when sodium hydrogen carbonate is added to acetic acid, a gas is released right away with a quick fizz. What gas is this? Describe the procedure used to test this gas.

Acetic acid and sodium hydrogen carbonate combine to produce a quick effervescence of CO 2.The word "to absorb" also seems strange in this context. Everything about this is absurd. Because carbonate ions hydrolyze to produce hydroxide and bicarbonate ions, a sodium carbonate aqueous solution has a basic pH. The pH is basic even when starting with sodium bicarbonate (baking soda); for normal amounts.

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1. HCl(aq) + KOH(aq) --> KCl(aq) + H₂O(l)

2. Fe(s) + CuSO₄(aq) --> FeSO₄(aq) + Cu(aq)

3. KBr --> K + Br

4. Cl₂ + 2Na --> 2NaCl

5. Al₂(SO₄)₃ + Ca₃(PO₄)₂ --> 2AlPO₄ + 3CaSO₄

6. 2NaI + Cl2 --> 2NaCl + I₂

7. 2C₄H₁₀ + 13O₂ --> 10H₂O + 8CO₂

The magnitude of the force acting on the sports car is 7500N.

Mass of the sportscar= 1500 kg

Acceleration of the sportscar= 5m/s^2

Net Force = Mass × Acceleration,

or F = m × a.

F= 1500 kg x 5m/s^2

F = 7500N.

According to the equation a = v/t, acceleration (a) is the product of the change in velocity (v) and the change in time (t). In terms of meters per second squared (m/s2), this enables you to calculate how quickly velocity varies.

p = m v . The equation shows that the relationship between momentum and an object's mass (m) and speed is linear (v). The larger an object's mass or velocity, the greater its momentum will be as a result.

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the IV drip rate for administering Ringer's Lactate over 12 hours would be approximately 21 drops per minute (gtt/min).

To calculate the IV drip rate for administering Ringer's Lactate over 12 hours, we'll follow these steps:

Step 1: Determine the total number of drops required.

Step 2: Calculate the drip rate per minute.

Step 3: Convert the drip rate to drops per minute (gtt/min).

Let's begin:

Step 1: Determine the total number of drops required.

The order is to administer 1000 ml of Ringer's Lactate over 12 hours. Since we have 1 liter (1000 ml) of Ringer's Lactate available, the total number of drops required will be the same as the total volume in milliliters.

Total drops = 1000 ml

Step 2: Calculate the drip rate per minute.

To find the drip rate per minute, we'll divide the total number of drops by the duration in minutes.

12 hours = 12 * 60 = 720 minutes

Drip rate per minute = Total drops / Duration in minutes

Drip rate per minute = 1000 ml / 720 min

Step 3: Convert the drip rate to drops per minute (gtt/min).

Given that the infusion tubing is labeled 15 gtt per ml, we can use this information to convert the drip rate from milliliters per minute to drops per minute.

Drops per minute = Drip rate per minute * Infusion tubing label (gtt/ml)

Drops per minute = (1000 ml / 720 min) * 15 gtt/ml

Now we can calculate the solution:

Drops per minute = (1000 ml / 720 min) * 15 gtt/ml

Drops per minute ≈ 20.83 gtt/min

Rounding off to the nearest whole number:

Drops per minute ≈ 21 gtt/min

Therefore, the IV drip rate for administering Ringer's Lactate over 12 hours would be approximately 21 drops per minute (gtt/min).

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The intermolecular forces at play that allow the sodium sulfate to dry the product are hydrogen bonding and van der Waals forces.

When anhydrous sodium sulfate is added to a solution, it readily absorbs water molecules by forming hydrogen bonds with them. This removal of water molecules results in a reduction in the number of water molecules present in the mixture and thus, the product is dried.

Additionally, van der Waals forces also play a role in the drying process. Van der Waals forces are weak, non-covalent forces that arise due to the fluctuation of electron density in a molecule. They are responsible for the interaction between molecules, including the attraction between sodium sulfate and water molecules.

The combined effect of hydrogen bonding and van der Waals forces results in the absorption of water by the anhydrous sodium sulfate, leading to the drying of the product.

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Answer:

Because in methane atoms of carbon and hydrogen are present in simplest ratio of 1:4 that can not be simplified further in whole number so its Emperical formula is same as molecular formula.

Explanation:

True, acid deposition is a bigger term used to describe acid rain.

Acid rain is rain or every other form of precipitation this is unusually acidic, which means that it has improved stages of hydrogen ions. maximum water, along with consuming water, has an impartial pH that exists between 6.5 and 8.5, however acid rain has a pH degree decrease than this and stages from four-five on common. The damage to humans from acid rain isn't always direct.

Acid rain is one of the consequences of air pollutants. Gases produced from the burning of fuels react with the oxygen in the air and water vapor, transforming into acids that fall onto the earth's floor as rain.

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Answer:

True

Explanation:

Answer:

At -20°C the mercury state will be liquid

Explanation:

The melting point of a substance is the temperature at which it changes from solid state to a liquid state, and the boiling point is the temperature at which it changes from liquid state to a gaseous state.

If mercury melts at -39°C and boils at 356.9°C, it means that if the temperature is lower than -39°C, mercury will remain al solid state. Between -39°C and 356.9°C, the state of mercury will be liquid and, above 356.9°C mercury will remain at gaseous state.

So, at -20°C the mercury state will be liquid, because that temperature it is between -39°C and 356.9°C.

0.6156 grams of water can form from the given mixture of hydrogen and oxygen.

Mass of water = moles of water × molar mass of water

             = 0.0342 mol × (18 g/mol)    [Molar mass of water = 18 g/mol]

             = 0.6156 g

To determine the amount of water that can form from the given mixture of hydrogen and oxygen, we need to consider the balanced chemical equation for the reaction between hydrogen and oxygen to form water.

The balanced equation for this reaction is:

2H2 + O2 -> 2H2O

From the equation, we can see that 2 moles of hydrogen react with 1 mole of oxygen to produce 2 moles of water.

Given:

Mass of hydrogen = 0.0346 g

Moles of oxygen = 0.0171 mol

To find the limiting reactant, we need to compare the moles of hydrogen and oxygen and determine which one is present in a smaller amount.

Moles of hydrogen = mass of hydrogen / molar mass of hydrogen

                   = 0.0346 g / (2 g/mol)    [Molar mass of hydrogen = 2 g/mol]

                   = 0.0173 mol

Since the moles of hydrogen (0.0173 mol) are greater than the moles of oxygen (0.0171 mol), oxygen is the limiting reactant.

Now, we can calculate the moles of water formed from the limiting reactant (oxygen).

Moles of water = moles of oxygen × (2 moles of water / 1 mole of oxygen)

              = 0.0171 mol × (2 mol/ 1 mol)

              = 0.0342 mol

Finally, to find the mass of water formed, we can use the molar mass of water.

Mass of water = moles of water × molar mass of water

             = 0.0342 mol × (18 g/mol)    [Molar mass of water = 18 g/mol]

             = 0.6156 g

Therefore, 0.6156 grams of water can form from the given mixture of hydrogen and oxygen.

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Periodic table is divided into three metals, non metals and metalloids. The non metals are kept on the right side of the periodic table. Th correct option is option D.

Non metals are the element that have property to gain electron. When any element gain electron then element attain negative charge and that element is called anion. The examples of non metals are Oxygen, nitrogen, carbon, Fluorine etc.

The properties of non metals are

Non metals are soft.

Non metals are not malleable that is they can be broken into thin sheets.

Non metals are not ductile they can not be broken into thin wires.

Non metals are brittle in nature that is they can be broken down easily.

Non metals are not lustrous.

In metals, reactivity increases down a group, and in non-metals reactivity increases up a group.

Therefore the correct option is option D.

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Answer:

d

Explanation:

same question

To solve this problem, we can use the first-order rate law equation:

ln([A]t/[A]0) = -kt

Where [A]t is the concentration of A at time t, [A]0 is the initial concentration of A, k is the rate constant, and t is the time elapsed.

We can rearrange this equation to solve for t:

t = (ln([A]0/[A]t))/k

Plugging in the given values, we get:

t = (ln(0.750/0.250))/0.270 s^-1
t = (ln(3))/0.270 s^-1
t = 3.74 seconds

Therefore, it would take 3.74 seconds for the concentration of A to decrease from 0.750 M to 0.250 M at 400°C with a rate constant of 0.270 s^-1.

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Answer:

Covalent bonds usually occur between nonmetals.

Explanation:

The property of matter that is conserved in chemical reactions and shown by balanced equations is known as the Law of Conservation of Mass. According to this law, mass can neither be created nor destroyed in a chemical reaction; it can only be transformed from one form to another.For instance, when two substances are combined, they react and form a new substance.

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The difference in kinetic energy if a 6 kg bowling ball rolling at 16 mph and when it is rolling at 14 mph is 180J.

Kinetic energy of an object can be calculated using the following formula;

K.E = ½mv²

Where;

According to this question, a 6 kg bowling ball is rolling at 16 mph and 14 mph respectively.

K.E = (½ × 6 × 16²) - (½ × 6 × 14²)

K.E = 768 - 588

∆K.E = 180J

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Solution :

We know, In an electrolyte solution, the number of dissolved particles is larger because the solute breaks apart into ions. The greater the number of ions, the larger the impact on colligative properties will be.

So, the compound which will dissociate into more number of electrolyte has more vapour pressure.

Out of all given compound K₃PO₄ have highest number of particles after dissociation.

Hence, D) is the required solution.

A star evolves off the main sequence when helium is exhausted in the stellar core.Our solar system’s gas giant planets (and those of other solar systems) did not become stars because they are not massive enough to generate the high temperatures and pressures necessary to start hydrogen fusion in the core.

Stars evolve off the main sequence when the nuclear fusion in their cores is no longer capable of supplying sufficient energy to maintain the gravitational energy, causing it to contract and the outer layers to expand and cool. When hydrogen runs out in the core of a star, the core shrinks and heats up and the outer layers expand, resulting in a red giant. However, when helium is consumed in the core, the core collapses and heats up, causing the outer envelope to get expelled, and the core evolves into a white dwarf.

A gas giant planet's temperature and pressure aren't high enough to generate fusion. They aren't dense enough to generate the heat required for nuclear fusion. Therefore, gas giant planets do not generate their own light and heat in the same way as stars. They can emit more energy than they obtain from the sun if they have a significant atmosphere. The planets in the solar system, such as Jupiter and Saturn, are examples of gas giants.

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Answer:

761.3

mmHg (mm of mercury)

Select input unit of pressure:        761.3 mmHg (mm of mercury) equals to:

Pa (pascal)

hPa (hectopascal)

kPa (kilopascal)

MPa (megapascal)

kgf/cm2 (kg per sq. cm)

kgf/m2 (kg per sq. meter)

mbar (millibar)

bar

atm (standard atmosphere)

at (technical atmosphere)

torr

mmH2O (mm of water)

mmHg (mm of mercury)

inHg (inches of mercury)

psi (pounds per sq. inch)

psf (pounds per sq. foot)

101498.31907898 Pa (pascal)

1014.98319079 hPa (hectopascal)

101.498319079 kPa (kilopascal)

0.101498319 MPa (megapascal)

1.034994816 kgf/cm2 (kg per sq. cm)

10349.948155485 kgf/m2 (kg per sq. meter)

1014.98319079 mbar (millibar)

1.014983191 bar

1.001710526 atm (standard atmosphere)

1.034994816 at (technical atmosphere)

761.3 torr

10349.949664708 mmH2O (mm of water)

761.3 mmHg (mm of mercury)

29.972433492 inHg (inches of mercury)

14.721102154 psi (pounds per sq. inch)

2119.838710232 psf (pounds per sq. foot)

The pressure value 761.3 mmHg (mm of mercury) in words is "seven hundred and sixty-one point three mmHg (mm of mercury)".

Explanation:

761.3 mm Hg is equal to 101,498.31907898 Pa. Pressure can be measured by using many units such as atm, Pa, torr, bar, cmHg, mmHg and so on.

The pascal (Pa) is the unit of pressure or stress in the International System of Units (SI). It is named after the scientist and mathematician Blaise Pascal.

1 mmHg = 133.322 pascals (Pa) pascal value x 1 Pa = mm Hg value x 133.322 Pa.

Pa value = mmHg value x 133.322.

1 atm = 760 mmHg = 101325 Pa

761.3 mm Hg= (\(\frac{01325 Pa}{760 mmHg}\)) x 761.3 mm Hg

= 101,498.31907898 Pa

Hence, 761.3 mm Hg is equal to 101,498.31907898 Pa.

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Answer:

2 energy levels

Explanation:

Answer:

Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.

Explanation:

A girl roller-skating has kinetic energy.

Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.

Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.

So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.

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The conversion of the following moles to grams is as follows:

The number of moles of a substance can be converted to mass using the following formula:

moles = mass ÷ molar mass

According to this question, 0.989 moles of phosphorus and 1.21 moles of carbon dioxide is given. The mass can be calculated as follows:

mass of phosphorus = 31 × 0.989 = 30.659g

mass of carbondioxide = 44 × 1.21 = 53.24g

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The pH at the equivalence point for the titration of 0. 22 m HCN with 0. 22 m NaOH is 11.17

Calculation,

Concentration of NaCN = 0. 22 m/ 2 = 0.11 M ( at equal volumes of acid and base will be used).

The equilibrium is ,

HCN +\(H_{2} O\)  → \(H^{+} + CN^{-}\)

C(1-x)              Cx      Cx

Where x , is the degree of hydrolysis and

\(K_{h}\) = C\(x^{2}\)/(1-x)

We know that \(K_{h}\) = \(K_{w}/K_{a}\) = 1 ×\(10^{-14}\)/4. 9 ×\(10^{-10}\) =  2.04×\(10^{-5}\)

\(K_{h}\) =  C\(x^{2}\) =   2.04×\(10^{-5}\)  = 0.11 M×\(x^{2}\)

\(x^{2}\) =  2.04×\(10^{-5}\)/0.11 M

x = 1.36×\(10^{-2}\)

\([OH^{-} ]\) = Cx =  1.36×\(10^{-2}\) × 0.11 M = 0.15×\(10^{-2}\)

\([H^{+} ]\) =  1 ×\(10^{-14}\)/ 0.15×\(10^{-2}\) = 6.66×\(10^{-12}\)

pH = -㏒\([H^{+} ]\) = -㏒6.66×\(10^{-12}\) = 11.17

The pH at the equivalence point for the titration is  11.17.

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Answer:

explation

Explanation:

you put ice cold water in a glass, and in another glass put boiling water, how long would it take for the two cups of water to be roughly the

Due to the surface tension of water and the crystals ability of diffusion the crystals are placed at the bottom of the beaker of water​.

Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.

There are 2 main types of diffusion:

1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.

2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.

There are 2 types of facilitated diffusion one is osmosis and dialysis.

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There are 1.142 grams of C₃H₆ in the 652 mL of sample of the gas at STP.

Using ideal gas equation,

PV = nRT,  pressure is P, volume is V, number of moles in n, gas constant is R, the temperature is T. At STP, the pressure is 1 atm, the temperature is 273 K, and the molar volume is 22.4 L.

We can use the following steps to calculate the number of moles of C₃H₆ present in 652 mL of the gas at STP:

Convert the volume to liters:

652 mL = 0.652 L

Calculate the number of moles using the ideal gas law:

PV = nRT

(1 atm) (0.652 L) = n (0.0821 L·atm/mol·K) (273 K)

n = 0.0272 mol

Calculate the mass of C₃H₆ using its molar mass:

m = n × M

M(C₃H₆) = 42.08 g/mol

m = 0.0272 mol × 42.08 g/mol

m = 1.142 g

It is nearest to option D, hence the mass is 1.22 grams.

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Answer:

It is considered an ionic compound since it is composed of the magnesium cation (Mg2+) and two hydroxide anions (OH-). There are no covalently shared electrons here. ... The reaction of the hydroxide anions with acid causes more of the magnesium hydroxide to dissolve until all of the acid has been neutralized.

A is 14.03 in the given equation y = Ax + (Bx^2)/2, if we substitute y = 23.2, x = 1.40 and B = 3.63.

This is an algebraic equation with two variables of order 2. The values of x, y and the coefficient of x^2 is given here.

The given equation y = Ax + (Bx^2)/2 has the variables A, x, y, and B.

By substituting the variables y, x, and B, we can get A from the equation.

y = 23.2

x = 1.40

B = 3.63

Substituting these values,

23.2 = A*1.40 + (3.63*1.4^2)/2

23.2 = 1.4A + 3.63*1.96/2

23.2 = 1.4A + 7.1148/2

23.2 - 3.5574 = 1.4A

1.4A = 19.6426

A = 19.6426/1.4

A = 14.03

Therefore, A = 14.03

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A metal is less reactive than hydrogen when it reacts with HCl. This is so that it won't be displaced by metals from acids like hydrochloric acid, which are less reactive than hydrogen.

Due to their position in the reactivity series below hydrogen, copper and gold do not react with water. With HCl, silver and gold do not react. This is due to the fact that they, like other reactive metals, are unable to remove hydrogen from HCl.

There is nothing to be concerned about when it comes to getting your jewellery wet if it is made of pure gold. Whether it be a 10K, 14K, 18K, or 22K gold necklace, bracelet, ring, or pair of earrings.

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Explanation:

We know that,

1 mile = 1609.34 m

We need to find how many meters are present in the 12.45 miles. To find it use unitary method as follows :

12.45 mile = 1609.34 × 12.45

12.45 mile=20036.283 meters

or

\(12.45\ mile=2.0036\times 10^4\ m\)

Hence, this is the required solution.