A vessel contains 1 mole of O2​ gas (molar mass=32) at temperature T. The pressure of the gas is P. An identical vessel containing one mole of He gas (molar mass=4) at a temperature 2T, has a pressure of

Answer:

the answer is 3(decay) and

the second isa 1(alfa particle) has a mass of equal to helium nucleus

Answer:

when it reduces heat.

Explanation:

Thermal energy is transferred to material,the motion of its particles speeds up and it's temperature differences.Insulating materials are bad conductors and so this reduces the heat loss by conduction.The material also prevents air circulating inside the cavity,therefore reducing heat loss by convection.Heat loss through the roof can be reduced by laying loft insulation.

Answer:

air     water

Explanation:

Mediums that can have waves

All of the following are involved in eukaryotic transcription EXCEPT a rho factor. The correct answer is 2.

Eukaryotic transcription is the process by which genetic information in DNA is transcribed into RNA. This process is carried out by a large complex of proteins and enzymes, including general transcription factors, transcription activators, and a transcription initiation complex.

These proteins and enzymes work together to unwind the DNA double helix, recruit the RNA polymerase enzyme to the promoter region of the gene, and begin the process of synthesizing RNA. The rho factor is not typically involved in this process, as it is specific to prokaryotic cells and is involved in the termination of transcription.

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Answer:

it's c trust me

Explanation:

c cause it's c

Answer:

d

Explanation:

i dont know

makes the most sense to me

The classification of an instrument that makes sound from the substance itself is Idiophones.

Instruments are objects that are used in labs and music classes. They are the main items that help in doing work in those classes and labs. Instruments are made with technical knowledge and help in technical things.

The idiophone is an instrument that produces sound by vibrating the plates of the instrument. Under this, the instrument produces voices by themselves.

Thus, Idiophones are a type of instrument that produces sound using the substance itself.

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Answer:

94,200 milligrams in 94.2 grams

To get answer multiply 94.2 by 1000.

Answer:

there is 94,200 milligrams in 94.2 grams

Explanation:

hope this helps, because 1,000 milligram is 1 gram

so 1,000x94.2(grams)=94,200

HOPE THIS HELPS A LITTLE

To draw the Lewis structure of PCl₅ (phosphorus pentachloride), we first need to determine the total number of valence electrons in the molecule.

Phosphorus (P) is in Group 5A of the periodic table and has 5 valence electrons. Chlorine (Cl) is in Group 7A and has 7 valence electrons. Since there are 5 chlorine atoms in PCl₅, we multiply the number of valence electrons for one chlorine atom by 5, giving us a total of 35 valence electrons for the chlorine atoms.

Therefore, the total number of valence electrons for PCl₅ is:

5 (valence electrons of P) + 35 (valence electrons of Cl) = 40 valence electrons.

Now, let's draw the Lewis structure of PCl₅:

                   Cl

                   |

     Cl - P - Cl

                   |

                   Cl

In the Lewis structure, the central phosphorus atom is bonded to 5 chlorine atoms. Each bond represents a pair of electrons. Since there are 5 chlorine atoms bonded to phosphorus, we use 5 pairs of electrons for the bonds.

The remaining electrons (40 - 5 = 35) are placed as lone pairs on the chlorine atoms.

Therefore, the appropriate number of valence electrons on the central phosphorus atom is 5.

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Answer:

Hope this will help you

Answer:

Methane = Production and transport of oil and natural gas

Fluorinated gases = Industrial processes

Nitrous Oxide = Agricultural and industrial activities

Carbon Dioxide = Burning fossil fuels

*You don't have to believe me but...you might get this question wrong if you don't believe me. <3

Answer:

43.7 g

Explanation:

unit mass of NaCl = (23 + 35.5) u = 58.5 u

58.5 is the mass of one unit formula of NaCl (since NaCl is not a molecular compound)

1 u = 1.661×10^-24 g

if 1 unit formula of NaCl has 58.5 u, then 4.5×10²³ units of NaCl will have:

58.5 u × (1.661×10^-24 g/1 u) × 4.5×10²³ = 43.7 g

Answer:

Explanation:

According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.

A molecule will always be polar if it has polar bonds.

For a molecule to be polar, it must have polar bonds and have those bonds organized in such a way that the bond dipoles do not cancel each other out. Molecules that are polar have both positively and negatively charged parts. A common polar substance is water. Because of its structure and the types of bonds it contains, the molecule has a slight positive charge at one end (the hydrogen end) and a slight negative charge at the other (the oxygen end). Due to the uneven distribution of electrons among the atoms and the asymmetrical nature of the water molecule, the hydrogen atoms at one pole of the molecule are positively charged, while the oxygen atoms at the other pole are negatively charged (side). We use the term "electrically polar" to describe the water molecule.

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The root-mean-square speed of the molecules will be the highest in SF6 at 200°C. According to the kinetic-molecular theory, the root-mean-square speed of gas molecules is directly proportional to the square root of their absolute temperature and inversely proportional to the square root of their molar mass.

The formula for calculating the root-mean-square speed is:

vrms = √(3RT/M)

where:

vrms = root-mean-square speed

R = ideal gas constant

T = absolute temperature

M = molar mass of the gas

At a given temperature, gases with lower molar masses will have higher root-mean-square speeds. In this case, we are comparing gases at 200°C. Among the given options (O2, H2O, and SF6), SF6 has the highest molar mass. Therefore, according to the kinetic-molecular theory, the root-mean-square speed of SF6 molecules will be the highest at 200°C.

The root-mean-square speed of molecules is not the same for all gases at a given temperature. It depends on the molar mass of the gas. In this case, SF6 has the highest molar mass among the given options, so its molecules will have the highest root-mean-square speed at 200°C.

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It, would take the Palo Verde nuclear power generator approximately 1.84 × 10¹¹ years to produce the same amount of energy that the Sun generates in one minute.

To calculate the time it would take for Palo Verde nuclear power generator will produce the same amount of energy as Sun generates in one minute, we need follow these steps;

Determine the energy generated by the Sun in one minute:

The luminosity of the Sun will be approximately 3.8 × 10²⁶ Watts. To find the energy generated by the Sun in one minute, we need to multiply its luminosity by 60 seconds;

Energy generated by the Sun in one minute = (3.8 × 10²⁶ W) × (60 s) = 2.28 × 10²⁸ Joules.

Determine the time it takes for the Palo Verde nuclear power generator to produce an equivalent amount of energy:

The combined generating capacity of the Palo Verde nuclear power generator is given as 3.937 × 10⁹ Watts.

To find the time it takes to produce the same amount of energy as the Sun, we need to divide the energy generated by the Sun in one minute by the power output of the Palo Verde nuclear power generator;

Time = Energy / Power = (2.28 × 10²⁸ J) / (3.937 × 10⁹ W)

≈ 5.8 × 10¹⁸ seconds.

Convert seconds to years;

To convert seconds to years, we divide the time in seconds by the number of seconds in a year (approximately 31,536,000 seconds):

Time in years = (5.8 × 10¹⁸ s) / (31,536,000 s/year)

≈ 1.84 × 10¹¹ years.

Therefore, it would take the Palo Verde nuclear power generator approximately 1.84 × 10¹¹ years to produce the same amount of energy that the Sun generates in one minute.

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The 15 mL of 0.100 M KOH has been added, NO2- (aq) is present at a higher concentration in the solution than HNO2.

In order to determine whether HNO2 or NO2- is present at a higher concentration after 15 mL of 0.100 M KOH has been added, we need to consider the reaction that is taking place during the titration.

HNO2 is a weak acid that can react with KOH in a neutralization reaction:

HNO2 + KOH → KNO2 + H2O

As KOH is added to the HNO2 solution, the concentration of HNO2 decreases and the concentration of NO2- increases. At the point where 15 mL of 0.100 M KOH has been added, some HNO2 will have reacted with the KOH to form KNO2, but there will still be some HNO2 remaining in the solution.

To determine which species is present at a higher concentration, we need to compare the concentrations of HNO2 and NO2- in the solution after 15 mL of KOH has been added. The concentration of NO2- will be higher than the concentration of HNO2, since the HNO2 has reacted with the KOH and been converted to NO2-.

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Answer:

here go your answer

An angled dashed line (---->) is the ideal way to depict the hydrogen bonding between two water molecules.

Hydrogen bonding is the process by which an electronegative atom in a separate molecule is pulled to a hydrogen atom that is linked to a strongly electronegative atom, such as nitrogen, oxygen, or fluorine. It is a unique sort of bonding because hydrogen and the electronegative atom have very different electronegativities. Hydrogen bonds are responsible for a wide range of important traits and occurrences. One of its most notable effects is on a substance's physical properties. Compounds have high melting and boiling points because the hydrogen bonds must be broken in order for a substance to change states. An angled dashed line (---->) is the ideal way to depict the hydrogen bonding between two water molecules.

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Answer:

B) The tree-of-heaven is originally from China. It produces a chemical that prevents other plants from growing around it.

Explanation:

In ecology, a plant is said to be "INVASIVE" if it is FOREIGN or NON-NON-NATIVE to a particular region or area and also poses a great threat to the native species of that region. An invasive species, when introduced into a foreign habitat, heavily competes with the existing local species of that same habitat.

This is the case of the tree-of-heaven, which is originally from China. The tree produces a chemical that prevents other plants from growing around it. Note that this plant species is foreign to the Shenandoah National Park in Virginia as it originates from China. Likewise it harms the local or native species of the park by secreting a chemical that prevents other plants from growing around it. This characteristics portrays a plant that is INVASIVE.

Colloids are particles that measure between 1 and 1000 nanometers in size and scatter light. They are relatively stable particles that remain suspended in a solvent and do not settle over time.

Because of their small size, colloids have a large surface area, which is a key factor in their reactivity with ions, including cations.The attraction of ions towards a colloid surface is based on their size, charge, and concentration. The charge of a cation plays a vital role in the interaction of a colloid's surface. This is because a colloid's surface carries an opposite charge to that of the cation.

Small cations have a higher charge density than larger ones, which means they are attracted more strongly to colloid surfaces.The high charge density of small cations can interact with the colloid's surface at a closer range than large cations. Because of their size, large cations cannot come as close to the colloid's surface as small cations. Hence, small cations are attracted to colloid surfaces more strongly than large cations.As a result, smaller cations are more attracted to the surface of the colloids than larger ones. This suggests that the stability of colloidal systems is affected by the size of the cation involved.

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Answer:

Magnesium (Mg)

Explanation:

The amount of electrons displayed on this model is 12. Assuming that this is a neutral atom, the amount of electrons is equal to the atomic number of a given element. Therefore, 12 electrons correspond to the twelfth element on the Periodic Table, Magnesium.

Hope this is helpful!! :)))

C6H1206 is a compound (of glucose).

Answer:

when we do increased activity our body requires more energy and therefore more oxygen and

therefore heart has to pump blood much faster and that's why increase heart rate

Answer:

do some jumping activity and other exercises

Explanation:

hope it helps

Answer:

i think the answer is D)

but u should ask the another person too:)

Answer:

3 Electron shell/orbit

Explanation:

the number of shell an element has is what determines the period of that element.

Water (\(H_{2}O\)) appears on the product side with a coefficient of 8. To balance the given redox reaction, we can use the half-reaction method. Let's begin by balancing the reduction half-reaction and the oxidation half-reaction separately.

Reduction half-reaction: \(MnO_{4}^{-aq}\) + \(8H^{+aq}\) + \(5e^{-}\) → \(Mn^{2+}\)(aq) + \(4H_{2}O\)(l)

Oxidation half-reaction: \(NH_{3}\)(aq) → \(NO_{2}\)(g) + \(3H^{+}\)(aq) + \(2e^{-}\)

Next, we need to balance the number of electrons transferred in both half-reactions. To do this, we multiply the oxidation half-reaction by 5 and the reduction half-reaction by 2:

\(2NH_{3}\)(aq) → \(2NO_{2}\)(g) + \(6H^{+}\)(aq) + \(4e^{-}\)

\(2MnO_{4}^-\)(aq) + \(16H^{+}\)+(aq) + \(10e^{-}\) → \(2Mn^{2+}\)(aq) + \(8H_{2}O\)(l)

Now, we can combine the two half-reactions and cancel out the common species:

\(2MnO_{4}^-\)(aq) + \(16H^{+}\)(aq) + \(10NH_{3}\)(aq) → \(2Mn^{2+}\)(aq) + \(2NO_{2}\)(g) + \(8H_{2}O\)(l)

From the balanced equation, we can see that water (\(H_{2}O\)) appears on the product side with a coefficient of 8.

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Answer:

B.

Explanation:

Atoms make up molecules and ionic bonds cannot make up a molecule because they do not share electrons like in a covalent bond.