in which energy level would galliums valence electrons be found

Answer:

The number of atoms in the reactants equals the number of atoms in the products.

The correct answer as to which condition must be met in order for an equation to be balanced would be that the number of atoms in the reactants equals the number of atoms in the products.

In a reaction, the law of conservation of matter, mass. or atom must always hold true. For an equation of a reaction to be balanced, the number of atoms of each element in the reactants must equal to the number of atoms of the elements in the products respectively, even though their states might have changed.

For example in the reaction below:

NaOH + HCl ---> NaCl + H2O

The number of atoms of Na, O, H, and Cl on the reactant side is the same as the product side of the equation. The equation is, thus, said to be balanced.

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Answer:

it is 600 so the answer is b

Explanation:

The density of the penny is 2g/mol

Density is a measure of how compact the mass in a substance or object is

Here given data is

Mass of penny = 3gram

Volume of penny = 31.5 ml after penny was dropped

Volume of penny = 30 ml before penny was dropped

We have to calculate the density of penny = ?

Volume of penny = 31.5 - 30ml = 1.5ml

So density = mass/volume

Density = 3gram/1.5ml

Density = 2g/mol

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Answer:

that is Ph= -Log  ( 5.9  x10^-3)  =  2.2

the  solution is acidic since the  Ph is  less  than  7

Explanation:

Answer:

5mol at most

Explanation:

as we hv 5mol Ca available, the 5 mol Ca can react with 5/2 = 2.5mol O2, as we have more mol of O2 than that Ca can react with, Ca is the limiting reactant. Therefore at most 5/2x2 = 5 mol of CaO can be made

The product that would be formed from the reaction of benzoyl chloride with aqueous NaOH is benzoic acid (C₆H₅COOH).

Benzoyl chloride (C₆H₅COCl) reacts with NaOH (aqueous) to form benzoic acid (C₆H₅COOH), NaCl, and water (H2O). Benzoyl chloride is treated with a base like sodium hydroxide (NaOH) to produce a carboxylic acid. The reaction is known as hydrolysis because water is added to the compound to break down the bonds and produce a new molecule.

The balanced chemical equation is:

C₆H₅COCl + NaOH → C₆H₅COOH + NaCl

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Answer:

96.1 %

Explanation:

Which teacher do you have lol

The ΔG° for a half-reaction can be calculated using the equation ΔG° = -nFE°, where n is the number of electrons transferred and F is the Faraday constant. In this case, the half-reaction involves the transfer of 6 electrons, so n = 6. The value of E° is given as +1.47 V. The Faraday constant is 96,485 C/mol.

Plugging these values into the equation, we get:

ΔG° = -6 x 96,485 C/mol x 1.47 V

ΔG° = -862,871 J/mol

Converting this value to kilojoules and rounding to 3 significant figures, we get:

ΔG° = -863 kJ/mol

Therefore, the ΔG° for the given half-reaction is -863 kJ/mol. This negative value indicates that the reaction is spontaneous and can proceed in the forward direction under standard conditions.

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the final volume of air in the balloon  when the balloon is taken to a depth of 10ft in a swimming pool, where the pressure is 981 torr is 10.8 L. Answer: d) 10.8 L.

We are given the initial volume of air in the balloon, Vi = 14.0 L. The initial pressure, Pi = 760 torr. The final pressure, Pf = 981 torr. The depth of the swimming pool, h = 10 ft. The temperature of the air, T is constant, which means that the gas in the balloon is an ideal gas.

We can use Boyle's law and the pressure difference to find the final volume of air.Boyle's law states that at a constant temperature, the volume of a gas is inversely proportional to its pressure. That is,V_1/P_1 = V_2/P_2where V1 and P1 are the initial volume and pressure, and V2 and P2 are the final volume and pressure.

Rearranging this equation, we getV_2 = V_1 × P_1/P_2= 14.0 L × (760 torr)/(981 torr)= 10.8 L

Therefore, the final volume of air in the balloon is 10.8 L. Answer: d) 10.8 L.

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Answer:

b

Explanation:

Option b, 300 mL of 0.10 M SrCl₂, contains the greatest number of ions.

When SrCl₂ dissociates in water, it breaks into one Sr²⁺ ion and two Cl⁻ ions. Since the molarity of SrCl₂ is 0.10 M, it means there are 0.10 moles of SrCl₂ in 1 liter of solution. In 300 mL (0.3 L) of this solution, there will be 0.03 moles of SrCl₂. For each mole of SrCl₂, we get one Sr²⁺ ion and two Cl⁻ ions. Therefore, in the given volume, we have 0.03 moles of Sr²⁺ ions and 0.06 moles of Cl⁻ ions.

In comparison, options a, d, and e all contain only 0.03 moles of ions in their respective volumes. Option c, with FeCl₃, would produce 0.04 moles of ions (one Fe³⁺ ion and three Cl⁻ ions) in the given volume.

Hence, option b, 300 mL of 0.10 M SrCl₂, contains the greatest number of ions with a total of 0.03 moles of Sr²⁺ ions and 0.06 moles of Cl⁻ ions.

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Answer:

See explanation

Explanation:

Recall that;

Speed = Distance/time

Distance = Speed * time

Speed = 200 km/h

Time = 4 hours

Distance = 200 km/h * 4 hours = 800 kilometres

Displacement has to do with distance covered in a specified direction, in this case, the direction is towards Zambales.

Hence, the displacement is  800 kilometres towards Zambales.

EDTA (ethylenediaminetetraacetic acid) is commonly used to determine the hardness of water due to its ability to form complexes with metal ions, particularly calcium and magnesium ions.

Water hardness refers to the concentration of calcium and magnesium ions present in water. These ions can cause scaling, reduce the effectiveness of soaps, and have other negative effects. EDTA acts as a chelating agent, meaning it can bind to metal ions and form stable complexes.

In the process of determining water hardness, a known amount of EDTA solution is added to a water sample. The EDTA molecules form complexes with the calcium and magnesium ions present in the water.

The endpoint of the titration is reached when all the metal ions are complexed by the EDTA, resulting in a color change or an indicator reaching a specific endpoint.

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Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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Answer:

Atomic size decreases on going along a period from left to right because the electron enters into the same shell, therefore, attraction between nucleus and outermost electron increases and thus atomic size decreases. Valency first increases from 1 to 4 and then decreases from 4 to GO along a period from left to right.

Answer:

kha gya vo chasmis ........

The extra pressure produced by the sublimation of the dry ice in the sealed bottle at room temperature is 3.2 atmospheres.

Dry ice is solid carbon dioxide, which sublimes (converts directly from a solid to a gas) at a temperature of -78.5 degrees Celsius (-109.3 degrees Fahrenheit). When dry ice sublimes, it produces carbon dioxide gas, which can increase the pressure in a sealed container like the 2 liter bottle.

To calculate the extra pressure produced by the sublimation of the dry ice, we can use the ideal gas law;

PV = nRT

where P is pressure of the gas, V is volume of the container, n is number of moles of gas, R is universal gas constant, and T is temperature of the gas in Kelvin.

First, we need to calculate the number of moles of carbon dioxide gas produced by the sublimation of the dry ice. The molar mass of carbon dioxide is 44.01 g/mol, so;

n = m/M = 4.0 g / 44.01 g/mol = 0.0909 mol

Next, we need to convert the temperature in Celsius to Kelvin;

T = 21.9°C + 273.15 = 295.05 K

The volume of the container is given as 2 liters, but we need to convert this to cubic meters to use the ideal gas law. One liter is equal to 0.001 cubic meters, so;

V = 2 L × 0.001 m³/L = 0.002 m³

The universal gas constant is R = 8.31 J/(mol·K).

Now we can put in the values and solve for pressure;

P = nRT/V = (0.0909 mol) × (8.31 J/(mol·K)) × (295.05 K) / (0.002 m³) = 325224.55 Pa

Converting this pressure to atmospheres (atm), we get;

P = 325224.55 Pa / 101325 Pa/atm

= 3.209 atm

Therefore, the extra pressure is 3.2 atmospheres.

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Considering the IUPAC name, the common name for N₂O is nitrous oxide

IUPAC (International Union of  Pure and Applied Chemistry), is the recognized authority in the development of standards for the naming of  chemical compounds, through their Interdivisional Commitee on Nomenclature and Symbols.

The  IUPAC name to N₂O is nitrous oxide. Nitrous oxide is commonly known as the laughing gas is a colorless gas with a pleasant, sweetish odor and taste that, when breathed, causes placidity to pain.

Learn more:

Answer:

on e2020 the first one is dinitrogen monoxide second one is nitrous oxide

Explanation:

Answer:

v = 43.72 m/s

Explanation:

Given that,

Initial velocity of the train, u = 31 m/s

Acceleration of the train, a = 0.0705 m/s²

Time for which the train travel, t = 180.5 s

We need to find the final velocity of the train. Let it is v.. Using first equation of kinematics to find it such that,

\(v=u+at\\\\v=31+0.0705\times 180.5\\\\v=43.72\ m/s\)

So the final speed of the train is equal to 43.72m/s.

well you can't walk through the air but you can't walk through a concrete wall because all of the solid atoms holding it together

the groundwater system, the temperature of the water may be lower than that of the other system, but the total thermal energy (i.e., the sum of the kinetic energy of all the water molecules) can still be higher due to the larger volume of water being used

The temperature of a substance is a measure of the average kinetic energy of its molecules, and it does not depend on the number of molecules. Therefore, if two objects have the same temperature, they have the same average kinetic energy per molecule, regardless of the number of molecules.

However, the actual amount of heat transferred to the school depends on the temperature difference between the water and the building, as well as the rate of flow of the water.

It is important to note that the amount of energy needed to heat a space also depends on the thermal insulation and other factors, such as the air temperature, humidity, and solar radiation. Therefore, it is not accurate to say that the groundwater system will necessarily heat the school more than the other system, based solely on the amount of water being used.

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Answer:

synthetic

Explanation:

Answer:

The formula shows that there is one atoms of iron in each formula unit of FeCl3, and by definition the number of molecules or formula units in a mole is Avogadro's Number. Therefore, 5.33 moles contains 5.33 X Avogadro's Number of atoms, which is 3.21 X 1024 atoms, to the justified number of significant digits.

Answer:

The formula shows that there is one atoms of iron in each formula unit of FeCl3 , and by definition the number of molecules or formula units in a mole is Avogadro's Number . Therefore , 5.33 moles contains 5.33 X Avogadro's Number of atoms , which is 3.21 X 1024 atoms , to the justified number of significant digits .

The molarity of the DCP solution is 0.00124 M.

In order to calculate the molarity of the DCP solution, we need to use the following equation.

Molarity of AA solution x Volume of AA solution used = Molarity of DCP solution x Volume of DCP solution used

First, let's calculate the molarity of the AA solution.

Moles of AA = mass of AA/molar mass of AA

Molar mass of AA (ascorbic acid) = 176.12 g/mol

Moles of AA = 0.1153 g / 176.12 g/mol = 0.0006548 mol

Molarity of AA solution = moles of AA / volume of AA solution

Volume of AA solution used = 2.5 ml = 0.0025 L

Molarity of AA solution = 0.0006548 mol / 0.0500 L = 0.0131 M

Now we can use the above equation to calculate the molarity of the DCP solution.

Molarity of DCP solution = (Molarity of AA solution x Volume of AA solution used) / Volume of DCP solution used

Molarity of DCP solution = (0.0131 M x 0.0025 L) / 0.0265 L

= 0.00124 M

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Answer:

H2

Explanation:

Hydrogen gas isn't a compound but it is diatomic when found naturally hence the 2

The tetra-substituted double bond is 2,3-dimethyl-2-pentene.This is the only alkene possible with 7C and tetrasubstituted on the double bond.

Tetrasubstituted alkenes are alkenes in which the double-bond carbons in the molecule are exclusively attached to a total of four carbon atoms. Illustrated Glossary of Organic Chemistry - Tetra Substituted. Tetrasubstituted: A molecule or functional group in which four hydrogen atoms have been replaced by another atom or group.

Monosubstituted alkenes are alkenes in which the double bond carbons are attached to only one carbon and are mutually exclusive. If the alkene has only one double bond and the double bond is terminal the name does not need to be preceded by a number. Alkenes have a substituent with a hydrogen atom attached to the carbon of the double bond. The more substituents an alkene has, the more stable it is. Therefore, tetrasubstituted alkenes are more stable than trisubstituted alkenes.

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An atom with too many neutrons relative to protons is said to be unstable and can undergo radioactive decay to become more stable. There are several types of radioactive decay, including alpha decay, beta decay, and gamma decay.

In alpha decay, the unstable atom emits an alpha particle, which is a helium nucleus consisting of two protons and two neutrons. This results in a new nucleus with two fewer neutrons and two fewer protons.

In beta decay, the unstable atom emits a beta particle, which is either an electron or a positron. When an atom emits an electron, one of its neutrons is converted into a proton, and the atomic number of the atom increases by one. When an atom emits a positron, one of its protons is converted into a neutron, and the atomic number of the atom decreases by one.

In gamma decay, the unstable atom emits a gamma ray, which is a high-energy photon. Gamma decay does not change the number of protons or neutrons in the nucleus but instead releases excess energy.

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The statement is false. A catalyst does not react with the product. It increases the rate by lowering activation energy.

The assertion is bogus. An impetus doesn't respond with the result of a compound response. All things being equal, it builds the pace of the response by bringing down the initiation energy expected for the response to happen. This is accomplished by giving an elective response pathway that has a lower enactment energy. Accordingly, more reactants can beat the energy obstruction and respond to frame items, and the harmony is accomplished all the more rapidly. Since the impetus isn't consumed in the response, it doesn't influence the place of harmony, nor does it shift the balance to the right or left. Impetuses are fundamental in numerous modern cycles, as they can speed up the pace of the response and save time and assets.

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The mοlecule that is expected tο exhibit resοnance is D. NO₃- (nitrate iοn).

Resοnance οccurs when there are multiple valid Lewis structures that can be drawn fοr a mοlecule οr iοn. In the case οf NO₃-, it has a trigοnal planar mοlecular geοmetry with three οxygen atοms bοnded tο a central nitrοgen atοm. The nitrοgen atοm fοrms a dοuble bοnd with οne οxygen atοm and single bοnds with the οther twο οxygen atοms.

The resοnance structures οf NO₃- can be represented as fοllοws:

O/NO-

In this case, the dοuble bοnd can be delοcalized οr shared amοng the three οxygen atοms, resulting in resοnance.

Therefοre, the cοrrect answer is D. NO3-.

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