emistry Quiz 5C (Gas Laws) On a hot day Amy measures the air pressure in her tire and gets a normal reading of 35PSI. Later that night when it is colder the tire looks flat so she measures the pressure again and get a low reading of 29PSI. Assur there are no leaks. Which statement explains what Amy saw? The air molecules heated inside the tire causing them to move faster exerting more pressure on the inside walls of the tires in the evening. b. The air molecules cooled inside the tire causing them to move faster exerting less pressure on the in walls of the tires in the evening. c. The air molecules heated inside the tire causing them to move slower exerting more pressure on the inside walls of the tires in the evening. d. The air molecules cooled inside the tire causing them to move slower exerting less pressure on the inside walls of the tires in the evening. Volume (V1) Volume (V2) M 18 O​

Answer:

it is determined from known oxidation states of other elements

Answer:

3 Cu + 8 HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O

Explanation:

Make sure both sides are equal

3 Cu + 8 HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O

// start by those elements that change their oxidation degree

Cu and N

// also you can write reduction-oxidation reactions

\(Cu^{0}\) + 2 \(e^{-}\) --> \(Cu^{-2}\) | 2

\(N^{+5}\) - 3 \(e^{-}\) -->  \(N^{+2}\) | 3

// write the numbers of electrons that are lost/gained as the coefficients of the opposite elements

// then check if H and O are the same on both sides

// adjust if they aren't.

Answer:

Explanation:

3Cu + 2HNO3 --> 3Cu(NO3)2 + 2NO + 2H2O

The possible product(s) when the iodate ion is oxidized are IO and I04.

When the iodate ion (IO3-) is oxidized, it can form two possible products: IO (iodine monoxide) and I04 (iodate ion with a higher oxidation state). The oxidation process involves the loss of electrons, resulting in the formation of different chemical species.

In the case of iodate ion, it can be oxidized to form IO, which consists of iodine in a lower oxidation state, or it can be further oxidized to form I04, where iodine is in its highest oxidation state (+7). The specific product formed depends on the reaction conditions and the strength of the oxidizing agent involved.

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The order of octahedral splitting energy, ∆o is  \([Co(H_2O)_6]_3^+\) > \([CrCl_6]_3^-\) > \([Cr(CN)_6]_3^-\) > \([Ru(CN)_6]_3^-\).

The octahedral splitting energy (∆o) is defined as the energy difference between the two sets of d-orbitals (t2g and eg) in an octahedral crystal field. This is how the given complexes can be arranged in order of their octahedral splitting energies (from largest to smallest): \([Co(H_2O)_6]_3^+\) : It has the largest ∆o as it is a strong field ligand which causes a large splitting of the d-orbitals. \([CrCl_6]_3^-]\) : It has a lower ∆o than \([Co(H_2O)_6]_3^+\) as chloride ions are weak field ligands and they cause less splitting of the d-orbitals. \([Cr(CN)_6]_3^-\) : It has an even lower ∆o than \([CrCl_6]_3^-\) as cyanide ions are strong field ligands and they cause a greater splitting of the d-orbitals than chloride ions. \([Ru(CN)_6]_3^-\)  has the smallest ∆o as it has weak field ligands and they cause the least splitting of the d-orbitals among the given complexes.

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Answer:

Rolling down a steep hill

Explanation:

Answer:

Matter:

toothpaste

gasoline

bacteria

cell

Not matter:

happiness

sound

Explanation:

Matter is something that has mass and volume. Happiness is just a feeling, it doesn't exist in 3d world. Sound is a wave or just the movement of matter (particles of matter). Others have masses and volumes.

Answer:

I think that the first one is right(A)

The type of radioactive decay that results in no change in mass number and atomic number for the starting nucleus is gamma decay. The correct answer is option D.

Gamma decay is a type of radioactive decay that involves the emission of gamma rays from an atomic nucleus. Gamma rays are high-energy photons that are emitted when the nucleus undergoes a transition from a higher energy state to a lower energy state. Gamma decay does not result in a change in the atomic number or mass number of the nucleus, as no particles are emitted from the nucleus. Instead, the nucleus simply releases energy in the form of a gamma ray. Therefore, option D) Gamma is the correct answer.

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Answer:

Dipole dipole interaction

Explanation:

To convert 3 mg/ml to microgram/microliter, we need to use the conversion factor of 1 mg = 1000 micrograms and 1 ml = 1000 microliters. First, we can convert 3 mg/ml to micrograms/ml by multiplying it by 1000, which gives us 3000 micrograms/ml.

To convert the concentration of your protein sample from mg/ml to µg/µl, you simply need to convert the mass unit from milligrams (mg) to micrograms (µg). There are 1,000 µg in 1 mg. Your current protein concentration is 3 mg/ml. To find the concentration in µg/µl, follow these steps:
1. Convert milligrams to micrograms: 3 mg x 1,000 µg/mg = 3,000 µg.
2. Since there are 1,000 µl in 1 ml, divide the µg by 1,000: 3,000 µg ÷ 1,000 µl = 3 µg/µl.
So, the concentration of your protein sample is 3 µg/µl.To convert this to micrograms/microliter, we can divide by 1000, which gives us 3 micrograms/microliter.

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When holding everything else constant, a decrease in supply has the following effects on equilibrium price and quantity:

The law of supply states that as the price of a good or service rises, the quantity supplied rises, ceteris paribus, and vice versa. When there is a decrease in supply, it indicates that the supply curve has shifted leftward. This causes a decrease in the quantity supplied at each price level, resulting in a higher price for the given quantity of the good or service.

In conclusion, when there is a decrease in supply while everything else is constant, equilibrium price will increase and equilibrium quantity will decrease.

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Answer: The total potential energy of the products is less than the total potential energy of the reactants

Explanation:

A chemical reaction in which the heat of the system gets increased as it absorbs the heat from the surroundings and transfers it to the system is called an endothermic reaction.

The potential energy of the reactants is more than the products.

Vinegar and baking soda react by absorbing the heat from the system and reacting to produce carbon dioxide, sodium acetate and water.

In this type of reaction, the reactants absorb heat resulting in increased potential energy and is high compared to that of the products produced.

Therefore, option D is correct.

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Answer:

A.kinetic energy doubles as well

B. speed will increase by 1.414 times

Explanation:

kinetic energy is directly proportional to the temperature so doubling the temperature doubles the kinetic energy as well

The Highlands consist of constantly erupting volcanoes.

The Highlands formed by uplifting volcanic activity.

The Highlands consist of constantly erupting volcanoes and the lands formed by uplifting of regions due to volcanic activity are the factors that are responsible for the unusual ecosystem of the Ethiopian Highlands.

There are eight types of ecosystem are present in Ethiopia. All these ecosystems are formed due to Volcanoes and volcanic activity which make the unusual ecosystems in the highlands of Ethiopia so we can conclude that volcanoes and volcanic activity is responsible for unusual ecosystems in Ethiopia.

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Answer:

The Highlands experience large amounts of average yearly rainfall.

The Highlands formed by uplifting volcanic activity

Answer: D.) single replacement

Reaction Ca 2H2O → Ca(OH)2 H2 is a single replacement reaction.

chemical reaction, a manner in which one or more substances, the reactants, are transformed into one or greater extraordinary substances, the products. materials are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create one-of-a-kind substances as products.

⇒aggregate reaction.

⇒Decomposition reaction.

⇒Displacement reaction.

⇒Double Displacement response.

⇒Precipitation response.

A chemical reaction takes place when one or extra chemicals are modified into one or more different chemicals. Examples: iron and oxygen combine to make rust. vinegar and baking soda combine to make sodium acetate, carbon dioxide, and water.

.

Chemical reactions occur whilst chemical bonds among atoms are fashioned or damaged. The materials that move right into a chemical reaction are known as the reactants, and the materials produced at the top of the response are known as the goods.

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Answer:

Na

Explanation:

On the periodic table, the atomic radius of an atom typically decreases when going from left to right and increases when going from top to bottom.

The element having 8 valence electrons and 4 energy levels is krypton, (Kr)  it is a noble gas included in 18th group.

Krypton is 36th element in periodic table with main shell electronic configuration, K= 2, L= 8, M= 18 and N= 8 where, K, L, M and N are energy levels.

Krypton is in the group noble gases also called inert gases. The group members of Kr are, Helium, argon and xenon. Thus krypton is the element with 4 energy levels and 8 valence electrons.

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Answer:

No.

Explanation:

If the forces are acting on opposite direction, they will cancel out each other. As a result, the object will not move. This type of force is called balanced force. In this type of force the net force acting on an object is equal to 0. Hence, if two groups in the game are exerting equal and opposite force, the rope will not move.

Answer:

In the case of s and p orbitals, there can be three types of overlap. s – s orbital overlap (formation of H2 molecule): The mutual overlap between the half-filled s orbitals of two atoms is called s – s overlap and the covalent bond formed is known as sigma (s) bond. e.g. formation of a hydrogen molecule from two hydrogen atoms.

Explanation:

Answer:

When two metal atoms are bonded together, a third type of bond, a delta bond, is possible.

Explanation:

The overall dipole moment of the water molecule is shown in the image attached.

We know that there is a dipole that exists in a molecule when there is an electronegativity difference between the atoms that are in the molecule. In the case of the water molecule, there is an electronegativity difference that exists between the atoms of the water molecule.

Now, hydrogen is the positive end of the dipole and the oxygen is the negative end of the dipole. We have seen the structures of the dipole moment. Now, the overall dipole moment of the water molecule is shown in the image attached.

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Answer:

X = electrons from hydrogen

O (black) = electrons from oxygen

O (red) = electrons from when it was connected to a metal atom, hence why it has a negative charge

Answer:

energy

Explanation:

The First Law of Thermodynamics (Conservation) states that energy is conserved, it cannot be created nor destroyed.

Answer:

Mass of lime produced = 19.0 g

Explanation:

Given data:

Mass of lime produced = 11.2 g

Mass of limestone react = ?  

Solution:

Chemical equation:

CaCO₃     →      CaO + CO₂

Balanced chemical equation:

CaCO₃     →      CaO + CO₂

Number of moles of lime:

Number of moles = mass / molar mass

Molar mass of lime 56.1 g/mol

Number of moles = 11.2 g/ 56.1 g/mol

Number of moles = 0.19 mol

Now we will compare the moles of CaO and CaCO₃  from balance chemical equation.

                    CaO        :           CaCO₃

                      1             :             1

                     0.19          :          0.19

Mass of limestone react:

Mass = number of moles × molar mass

Mass = 0.19 mol × 100.1 g/mol

Mass = 19.0 g

Answer:

The materials would be best to us for the core to make the strongest electromagnetic to pick up the most nails is described below in detail.

Explanation:

Use a couple of wire strip-pers to exclude some centimeters of insulation from every end of the cable. Skillfully cover the cable around the nail. The more cable you enclose around the nail, the more effective your electromagnet will be. Compose certain that you leave sufficient of the cable unwrapped so that you can connect the battery.

B

the Earth is eccentric,this means that it has changed repeatedly over time

And if it took the earth more time to orbit round the sun than it does now the years would have more than Han 365 days a year

The chemist is likely planning a solid-phase oligosaccharide synthesis experiment.

Solid-phase oligosaccharide synthesis involves the stepwise assembly of carbohydrate chains on a solid support using blocking groups and activating groups. The blocking groups protect specific functional groups to ensure selective reactions, while the activating groups enhance the reactivity of certain functional groups during the synthesis process. This method allows for the controlled and sequential addition of monosaccharide units to build up complex oligosaccharide structures. The resulting oligosaccharides can then be analyzed using various techniques such as nuclear magnetic resonance (NMR) analysis, liquid chromatography mass spectrometry/mass spectrometry (LC-MS/MS) analysis, or other analytical methods to characterize their structure and properties.

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