0/ 1 A traveler heading on a trip packs a bag of mixed nuts for the plane. As the plane travels higher in the atmosphere, the inside pressure of the plane decreases to 85 kPa. Midway through the plane ride, the traveler decides to have the mixed nuts as a snack. The traveler discovers that the bag has inflated when it is taken out to be opened. The initial volume of the bag of mixed nuts was 250 mL at 101 kPa. Select the gas law and explanation that best describes the phenomenon that the traveler experienced on the plane

The energy released by the brass is an example of the heat of fusion.

To learn more about The mass of the brass refer to:

https://brainly.com/question/1993842

#SPJ1

Answer:

-283 C

Explanation:

I got it right

Answer:

C5H12 + 8O2 → 6H2O + 5CO2

Explanation:

Pentane + Oxygen --> Water + Carbon dioxide

C5H12 + O2  --> H2O + CO2

The balanced equation is given as;

C5H12 + 8O2 → 6H2O + 5CO2

The principle is the law of conservation of matter that states that matter cannot be created nor destroyed. Hence, the reactants pretty much recombine to form the products.

The number of atoms remains conserved.

If heat was lost from the calorimeter while the ice was melting, the measured value of the molar heat of fusion would be lower than the true value.

This is because some of the heat that is released when the ice melts would be absorbed by the surroundings (including the calorimeter and the air), instead of being used to heat up the water in the calorimeter.

The molar heat of fusion is defined as the amount of heat required to melt one mole of a substance at its melting point, with no change in temperature. It is usually determined experimentally using a calorimeter, which is an insulated container that can measure changes in temperature and heat flow.

In the experiment to measure the molar heat of fusion of ice, a known mass of ice is added to a calorimeter containing a known mass of water at a higher temperature. The heat released by the melting ice is absorbed by the water, causing it to cool down. By measuring the change in temperature of the water, the amount of heat released by the melting ice can be calculated, and from this, the molar heat of fusion can be determined.

If some of the heat released by the melting ice is lost to the surroundings, the measured value of the heat released will be lower than the true value, and hence the calculated molar heat of fusion will also be lower than the true value. To obtain a more accurate value of the molar heat of fusion, the heat loss from the calorimeter should be minimized by insulating the calorimeter and conducting the experiment in a thermally stable environment.

Learn more heat of fusion here:

https://brainly.com/question/30403515

#SPJ4

Answer:

Hidróxido de potasio

Compuesto químico

El hidróxido de potasio es un compuesto químico inorgánico de fórmula KOH. Tanto él como el hidróxido de sodio son bases fuertes de uso común. Tiene muchos usos tanto industriales como comerciales. La mayoría de las aplicaciones explotan su reactividad con ácidos y su corrosividad natural. Wikipedia

Fórmula: KOH

Explanation:

Answer:

Explanation:

Sodium chloride

Sodium chloride, commonly known as salt, is an ionic compound with the chemical formula Knack, representing a 1:1 ratio of sodium and chloride ions. With molar masses of 22.99 and 35.45 g/mole respectively, 100 g of Nicol contains 39.34 g Na and 60.66 g Cl. Sodium chloride is the salt most responsible for the salinity of seawater and of the extracellular fluid of many multicellular organisms. In its edible form of table salt, it is commonly used as a condiment and food preservative. Large quantities of sodium chloride are used in many industrial processes, and it is a major source of sodium and chlorine compounds used as feedstocks for further chemical syntheses. A second major application of sodium chloride is de-icing of roadways in sub-freezing weather.

Answer:

SrF₂

Explanation:

The combining species are strontium and fluorine atoms.

 They form an ionic bond because strontium is a metal and it will lose two electrons. Two atoms of fluorine will take up each of the two electrons.

The electrostatic attraction between the two charged particles forms the bond;

                  Elements:

                        Sr                 F

Valency             2                 1

Exchange of

power                 1                 2

The compound is SrF₂

Answer:

true

Explanation:

To add a calculated column for density, you will need to divide the mass of each block by its volume. This will give you the density of each block.

Now, to predict whether a block will float or sink, you need to understand that objects with a density less than 1 g/cm³ will float in water while objects with a density greater than 1 g/cm³ will sink.

Therefore, if the density of a block is less than 1 g/cm³, it will float in water. On the other hand, if the density is greater than 1 g/cm³, it will sink in water.

In conclusion, the calculated density of each block can be used to predict whether it will float or sink based on the density of water (1 g/cm³).

To add a calculated column to your data table for density, you would use the formula: density = mass/volume. To predict whether a block will float or sink using density, compare the density of the block to the density of the fluid it is placed in. If the block's density is less than the fluid's density, it will float. If the block's density is greater than the fluid's density, it will sink.

To know more about density, visit:

https://brainly.com/question/29775886

#SPJ11

Answer:

0.157689 moles

Explanation:

Answer:

Atomic emission spectra are produced when excited electrons return to the ground state. When electrons return to a lower energy level, they emit energy in the form of light.

Explanation:

Answer:B

Explanation:

The metal spoon is a better thermal conductor. Hence, option B is correct.

A thermal conductor is a material that allows the energy in the form of heat, to be transferred within the material, without any movement of the material itself.

Metals are good conductors. Laying on the metal handle of the metal cooking pot. It appears that the pot is sitting on top of a campfire.

Since metal is a good conductor of energy, the spoon gets hot because heat is transferred through the metal pot to its handle, and then to the metal spoon.

Hence, option B is correct.

Learn more about thermal conductors here:

https://brainly.com/question/23812426

#SPJ2

Considering the reaction stoichiometry and Avogadro's Number, the mass of barium chloride produced is 21.6 grams.

The balanced reaction is

2 HCl + Ba → BaCl₂ + H₂

Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 6.023×10²³ molecules are contained in 1 mole of HCl, then 1.25×10²³ molecules are contained in how many moles of HCl?

amount of moles of HCl= (1.25×10²³ molecules × 1 mole)÷ 6.023×10²³ atoms

amount of moles of HCl= 0.2075 moles

Then, 0.2075 moles of HCl react.

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Then you can apply the following rule of three: if by stoichiometry 2 moles of HCl produce 1 mole of BaCl₂, 0.2075 moles of HCl will produce how many moles of BaCl₂?

\(amount of moles of BaCl_{2} =\frac{0.2075 moles of HCl x 1 mole of BaCl_{2} }{ 2moles of HCl}\)

amount of moles of BaCl₂= 0.10375 moles

Being the molar mass of BaCl₂ 208.24 g/mole, then the mass of barium chloride produced is calculated as:

\(0.10375 molesx\frac{208.24 grams}{1 mole} =21.6 grams\)

Finally, the mass of barium chloride produced is 21.6 grams.

Learn more about:

Answer:

+2

Explanation:

Answer:

no, it is fastest when many bubbles are produced.

Explanation:

Answer:

3.6 gallons are equal to 56 cups

Due to its position, an object has the ability to store energy. For instance, when a demolition machine's heavy ball is held in an elevated position, it is storing energy.

Potential energy is the name for this positional energy that has been stored. Similar to how a drawn bow can store energy due to its posture. There is no energy in the bow while it is in its normal position, or when not drawn.

The bow can yet store energy when its position is changed from its normal equilibrium position because of its position.

Potential energy is the name for this positional energy that has been stored. Potential energy is the energy of position that a thing has stored inside it.

Therefore, Due to its position, an object has the ability to store energy. For instance, when a demolition machine's heavy ball is held in an elevated position, it is storing energy.

To learn more about Potential energy, refer to the link:

https://brainly.com/question/24284560

#SPJ2

Answer:

Explanation

:Both b/c a chemical formula tells you how many and a sketch formula shows how they are bonded together.

Molecular formulas show how many atoms of each element one molecule of a compound contains. Note: Ionic compounds are generally crystalline solids with high melting points. Other compounds, however, have very different properties.

Explanation:

The atomic number of calcium (Ca) is 20, which means it has 20 protons and normally has 20 electrons to balance the charge. However, the ion given in the question is Ca²⁺, which means it has lost two electrons and has a 2+ charge.

To find the number of neutrons in an atom or ion, you subtract the number of protons from the mass number. The mass number of calcium is approximately 40, which means it has 20 neutrons.

Therefore, the number of protons, neutrons, and electrons in the Ca²⁺ ion is:

Protons: 20

Neutrons: 20

Electrons: 18

So the correct answer is option B: 20 protons, 26 neutrons, and 18 electrons.

The element Calcium (Ca) has 20 protons. The 46 Ca²+ ion has a mass number of 46, indicating it has 26 neutrons (46-20). The ²+ charge shows it has lost 2 electrons, so it has 18 electrons. The correct answer is B: 20 protons, 26 neutrons, and 18 electrons.

The element given here is Calcium (Ca) which has an atomic number of 20. The atomic number is equal to the number of protons, so Calcium has 20 protons (pt). The symbol 46 Ca²+ indicates that this is an ion with a mass number of 46. The mass number is the total of protons and neutrons, so to find the number of neutrons we subtract the number of protons from the mass number: 46 - 20 = 26 neutrons (nº). A ²+ charge means it has lost 2 electrons. Since the number of protons and electrons are usually equal in an atom, we subtract those 2 lost electrons from the 20 protons to find that this Calcium ion has 18 electrons (e-). So, the correct answer is B. 20 pt, 26 nº, 18 e-

https://brainly.com/question/31830797

#SPJ2

Yes, it is acceptable to mark the baseline (the starting line 1 cm from the plate bottom) using a pen.

The baseline (the starting line 1 cm from the plate bottom) can be marked using a pen. The statement is true. However, this statement is true only if the ink does not elute up the plate. The first answer is accurate because the ink will not elute up the plate, as mentioned. In paper chromatography, a baseline is a straight line that is drawn close to the bottom edge of the chromatogram paper. The chromatogram is the result of a paper chromatography experiment. The baseline is often constructed using a pencil or pen.

The color of the ink does not affect the chromatography of the mixture of compounds being analyzed. Other responses are incorrect. The second answer is incorrect because this statement does not guarantee that other compounds on the plate will not be easily distinguishable. The third answer is incorrect because the ink will not elute up the plate, as previously mentioned. The fourth answer is incorrect because the ink will not react with the silica plate, as previously mentioned.

Learn more about baseline at https://brainly.com/question/30193816

#SPJ11

It is possible to reduce splashing during magnetic stirring and minimize the risk of errors or contamination during titration if adequate steps are taken.

Splashes during titration can be caused by the magnetic stirring bar, which can cause drops of the titrant or sample to fly out of the container.

Here are some tips to avoid splashes during magnetic stirring:

Use an appropriate stirring speed: When the stirring speed is too high, it can create more turbulence and cause splashing. Using a moderate speed that is enough to keep the solution mixed but not too fast can help reduce splashing.

Use a larger container: A larger container can help reduce splashing by providing more space for the solution to move around. This reduces the chances of drops hitting the sides of the container and splashing out.

Use a splash guard: A splash guard can be placed over the container to prevent the drops from flying out. A simple splash guard can be made using a piece of paper or plastic film with a hole in the center for the stirring rod.

Adjust the position of the stirring bar: The position of the stirring bar can also affect the amount of splashing. It should be placed in the center of the container, and the depth should be adjusted so that it is not too close to the surface of the solution.

Use a lower flow rate: If the titrant is being added to the sample through a burette, a lower flow rate can help reduce splashing. This allows the drops to be smaller and less likely to fly out of the container.

Learn more about magnetic stirring here: https://brainly.com/question/13339404

#SPJ1

The molarity of a 97.62 (m/m) % acetic acid solution given that the solution density is 1.05 g/ml is 17.5M.

Reason:

Glacial acetic acid is 100% acetic acid. The MW of acetic acid is 60. The density of acetic acid (100%) is 1.05. So in 1 L we have 1.05 Kg. The number of moles of acetic acid is then 1050 g divided by 60 = 17.5 mol. So the molarity is 17.5 mold/L or 17.5 M.

Learn more about Acetic Acid Solution:

https://brainly.com/question/16737443

#SPJ4

Molarity is the molar concentration of the chemical species of the solute dissolved in the solvent. The molarity of the solution when diluted is 0.0257 M.

The molar concentration or the molarity of the solution is inversely proportional to the dilution. An increased dilution will decrease the molarity of the solution.

The molarity is given by:

\(\rm Molarity = \dfrac{\text{number of moles }}{ \text{Volume of the solution in L}}\)

Also, it can be shown as:

\(\rm M_{1}V_{1}= M_{2}V_{2}\)

Given,

\(\rm M_{1}\)  = 0.513 M

\(\rm V_{1}\) = 25 mL

\(\rm M_{2}\) = ?

\(\rm V_{2}\) = 500 mL

Substitute value in the equation as:

\(\begin{aligned} \rm M_{1}V_{1}&= \rm M_{2}V_{2}\\\\0.513 \times 25 &= \rm M_{2} \times 500\\\\\rm M_{2} &= \dfrac{0.513 \times 25 }{500}\\\\&= 0.02565\;\rm M\end{aligned}\)

Therefore, 0.0257 M is the molarity after dilution.

Learn more about molarity here:

https://brainly.com/question/19004694

The product(s) formed when each of them are reacted with alkaline KMnO₄ and hot acidic KMnO₄:

a) Cyclohexene + Alkaline KMnO₄ -> 1,6-Hexanedioic acid

b) 1,2-Dimethylcyclohexene + Alkaline KMnO₄ -> 1,2-Dimethylcyclohexane-1,2-diol

c) 1-Methyl-1,3-cyclopentadiene + Alkaline KMnO₄ -> No reaction occurs with alkaline KMnO₄.

a) When cyclohexene reacts with alkaline KMnO₄, the following products are formed:

Cyclohexene + Alkaline KMnO₄ -> 1,6-Hexanedioic acid

b) When 1,2-dimethylcyclohexene reacts with alkaline KMnO₄, the following products are formed:

1,2-Dimethylcyclohexene + Alkaline KMnO₄ -> 1,2-Dimethylcyclohexane-1,2-diol

c) When 1-methyl-1,3-cyclopentadiene reacts with alkaline KMnO₄, the following products are formed:

1-Methyl-1,3-cyclopentadiene + Alkaline KMnO₄ -> No reaction occurs

When cyclohexene, 1,2-dimethylcyclohexene, or 1-methyl-1,3-cyclopentadiene react with hot acidic KMnO₄, the products depend on the specific conditions and reaction conditions. The reaction may involve oxidation and functional group transformations.

To know more about products refer here :    

https://brainly.com/question/28195957#

#SPJ11                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.

A liquid can turn into a solid if it is cooled down far enough.

The average kinetic energy of the molecules falls as a liquid cools.

The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.

Freezing is the process of transitioning from a liquid to a solid.

It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.

learn more about kinetic energy refer

https://brainly.com/question/25959744

#SPJ13

Answer:O B. Weak acid breaks down minerals by reacting with them.

Explanation:

Chemical weathering is the process whereby rain water which sometimes can be acidic ( As rain falls down it reacts with CO2 in the atmosphere and form acid rain), This  reacts  with the minerals contained in rocks, dissolves and degrades  them further to form entire  new minerals.

An example of a rock that is greatly affected by overexposure of  acid rain is  limestone containing calcite  which easily degrades by acid rain.

Other processes whereby Chemical weathering can occur are through reaction with water and oxygen.

The phenomenon observed, where water at the top of the mountain started boiling before the water at lower stations, can be attributed to the difference in atmospheric pressure at various elevations.

Atmospheric pressure decreases with increasing altitude. The pressure exerted by the atmosphere affects the boiling point of a liquid. As the pressure decreases, the boiling point of a substance also decreases.

This is because boiling occurs when the vapor pressure of the liquid equals the atmospheric pressure. When the atmospheric pressure decreases, the vapor pressure required for boiling is reached at a lower temperature.

On top of the mountain, where the atmospheric pressure is lower, the boiling point of water is lower compared to the stations at lower elevations.

Therefore, even if the water at each station was at the same initial temperature, the water at the top of the mountain reached its boiling point first because the lower atmospheric pressure allowed the vapor pressure to be achieved at a lower temperature.

In contrast, the stations located at lower elevations experience higher atmospheric pressure, requiring a higher temperature to reach the boiling point of water. Hence, the water at these stations takes longer to reach the boiling point compared to the water at the top of the mountain.

For more such questions on   atmospheric pressure visit:

https://brainly.com/question/19587559

#SPJ8

For the n = 5 level of hydrogen, there are five possible subshells. The subshells are labeled using letters: s, p, d, f, and so on.

The number of possible subshells for a given energy level can be determined using the formula 2n², where n represents the principal quantum number.

In this case, since n = 5, we can substitute it into the formula to find the result. Applying the formula, we have 2(5)² = 2(25) = 50. Thus, there are 50 possible orbitals or subshells within the n = 5 level.

However, it's important to note that hydrogen has only one electron, so it can occupy only one orbital at a time. Therefore, while there are 50 possible subshells in theory, only one electron will occupy the n = 5 level of hydrogen.

To know more about subshells refer here

brainly.com/question/30792037#

#SPJ11

The total internal energy in the container is 329.77 Btu and the enthalpy in the container is 385.14 Btu.

Using the steam tables, we can determine the specific volume of water at the given pressure and temperature. The specific volume of water is 0.01658 \(ft^3/lbm\).

The mass of water in the container is 0.92 lbm, so the total volume of the water is:

V = m/v = 0.92 lbm / 0.01658 \(ft^3/lbm\)  = \(55.539 ft^3\)

Assuming the water is at saturation, we can find the total internal energy and enthalpy by using the values in the steam tables for saturated water at 100 psia.

From the steam tables, the total internal energy of saturated water at 100 psia is 358.05 Btu/lbm, so the total internal energy in the container is:

U = m * u = 0.92 lbm * 358.05 Btu/lbm = 329.77 Btu

From the steam tables, the enthalpy of saturated water at 100 psia is 419.02 Btu/lbm, so the enthalpy in the container is:

H = m * h = 0.92 lbm * 419.02 Btu/lbm = 385.14 Btu

Therefore, the total internal energy in the container is 329.77 Btu and the enthalpy in the container is 385.14 Btu.

Learn more about enthalpy :

https://brainly.com/question/13996238

#SPJ4