what types of atoms typically form metallic bonds?

The mass of \(Ag_2CrO_4\) that would be formed will be 2.69 grams.

Mole of 2.5 grams silver nitrate = 2.5/143.32 = 0.017 mol

Mole of 18.0 mL, 0.450 M sodium chromate = 18/1000 x 0.450 = 0.0081

From the balanced equation of the reaction, the mole ratio of silver nitrate to sodium chromate is 2:1. In other words, the sodium chromate is a bit limiting.

The mole ratio of sodium chromate and  \(Ag_2CrO_4\) is 1:1. Hence, the equivalent mole of \(Ag_2CrO_4\) formed would also be 0.0081 mol.

Mass of 0.0081 mol \(Ag_2CrO_4\) = 0.0081 x 331.73

                                                 = 2.69 grams

In other words, the mass of \(Ag_2CrO_4\) formed from the reaction would be 2.68 grams.

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Answer:

7ml/g

Explanation:

density=mass/volume

density=14g/2ml

density= 7g/ml

Hydrogen chloride (HCl) and sodium bicarbonate (NaHCO3) are the reactants. The substances produced as a result of this reaction are CO2(g), H2O(l), and NaCl(aq).

The reactants in the following equation:

HCl (a q) + NaHCO3(a q) → CO2(g) + H2O(l) + Na C l (aq) are hydrogen chloride (HC l) and sodium bicarbonate (NaHCO3).

Explanation:

A reactant is a substance that undergoes change during a chemical reaction. A reaction equation includes the symbols and formulas of reactants and products, along with the physical states of the substances, as they appear before and after the reaction.

The chemical reaction in this question is: HC l(a q) + NaHCO3(a q) → CO2(g) + H2O(l) + Na Cl (a q)In this equation, the reactants are H Cl (a q) and NaHCO3(a q), which are in an aqueous state.

Therefore, hydrogen chloride (H Cl) and sodium bicarbonate (NaHCO3) are the reactants. The substances produced as a result of this reaction are CO2(g), H2O(l), and Na Cl (a q).

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Answer:

Chloroform has a boiling point of 61.15 degrees Celsius and a vapor pressure of 9.5 kPa at 20 degrees Celsius. Glycerol, on the other hand, has a boiling point of 290 degrees Celsius and a vapor pressure of 0.0002 kPa at 20 degrees Celsius. Therefore, chloroform has a much lower boiling point and a much higher vapor pressure than glycerol. This means that chloroform is more volatile and evaporates more easily than glycerol.

Explanation:

Chloroform has a boiling point of 61.15 degrees Celsius and a vapor pressure of 9.5 kPa at 20 degrees Celsius. Glycerol, on the other hand, has a boiling point of 290 degrees Celsius and a vapor pressure of 0.0002 kPa at 20 degrees Celsius. Therefore, chloroform has a much lower boiling point and a much higher vapor pressure than glycerol. This means that chloroform is more volatile and evaporates more easily than glycerol.

Answer:

matter

Explanation:

Answer:

A pH calibration is the process of adjusting your pH meter by measuring solutions of a known pH value. This is because the characteristics of your electrode will change over time and this needs to be compensated for. A calibration does this by matching your pH meter to the current characteristics of your pH sensor.

Explanation:

Answer: distance to epicenter: 7600 km, s-wave travel time: 20 minutes

Answer:

only change the amount of lemonade mix you add.

only change the amount of water you add.

Explanation:

just did this question

The examples of controlled experiments are as follows:

Thus, the correct options for this question are B and C.

A Controlled experiment may be defined as a type of experiment in which all the variable factors in an experimental group and a juxtaposition control group are held identical except for one variable factor in the experimental group that is significantly altered.

According to this question, the options in which one variable factor is altered should keep in the category of a controlled experiment. It is very easily identified that the alteration or addition of lamonade in one experiment or the only addition of water in another experiment.

Therefore, the correct options for this question are B and C.

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Answer:

"1 M" will be the right solution.

Explanation:

The given values are:

Number of moles,

= 2 moles

Volume of solution,

= 2000 mL

or,

= 2 L

Now,

The molarity of the solution will be:

=  \(\frac{Moles}{Liters}\)

On substituting the values, we get

=  \(\frac{2}{2}\)

=  \(1 \ M\)

To find the molar mass of the given compound, we have use the molar masses of each element present in the molecule and multiply them by the number of atoms of each element in the molecule. Once we have these values, add them.

It means that we have to multiply the molar mass of Cr times 1, the molar mas of N times 2 and the molar mass of O times 6:

It means that the molar mass of Cr(NO3)2 is 176g/mol.

Answer:

I think option (d) is right answer

Answer:

I think that the answer is option(C)

Iron ore, coke and limestone are three important raw materials for the production of iron. Iron ore is used for the production of iron, while coke is used for heating the iron ore and limestone is added as a flux to remove impurities from the iron during the smelting process.

Iron ore: Iron ore is a mineral that is mined and extracted from the ground. Iron is the most important raw material used in steel production. Iron ore is used to make steel. Iron ore is used to make iron and steel. Iron ore is melted down with coke, which is a carbon-rich fuel, in a blast furnace to create pig iron. The pig iron is then converted into steel in a steelmaking plant.Coke: Coke is a fuel made from coal that has been heated in the absence of air. Coke is used to heat the iron ore and create the high temperatures needed for the smelting process. Coke is an important raw material for the production of steel.

Coke is also used to produce other materials, such as chemicals and fertilizer.Limestone: Limestone is a sedimentary rock composed primarily of calcium carbonate. Limestone is used as a flux in the steelmaking process. The purpose of adding limestone to the blast furnace is to remove impurities from the iron, such as sulfur and phosphorus.

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The balanced equation for the reaction of iron with water that results in the production of iron oxide and hydrogen gas is

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

Iron does not react directly with liquid water but react with water vapour. When the reaction happens, it results in the formation of a solid and a gas. The products of the reaction are Iron oxide and hydrogen. The equation of the reaction would be

Fe (s) + H₂O (g) → Fe₃O₄ (s) + H₂ (g)

Now, we need to balance the equation. On the right-hand side, we have 3 Fe, 4 O and 2 H. Similarly on the left-hand side there are 1 Fe, 1 O and 2 H.

To balance the equation, we add 3 to Fe, 4 to H₂0 and 4 to H₂.

As a result, the balanced chemical equation for the reaction would be

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

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Answer:

La reacción de etano, CH₃CH₃ y cloro, Cl₂ en presencia de luz solar se conoce como reacción de halogenación.

Los radicales de cloro se forman cuando el cloro se expone a la luz solar a continuación;

Cl₂ → 2Cl *

Se forma un radical etano cuando el etano, C₂H₆ reacciona con un radical libre de cloro, Cl *, como sigue;

C₂H₆ + Cl → C₂H₅ * + HCl

Se forma un producto halogenado cuando un radical libre de etano reacciona con una molécula de cloro como sigue;

C₂H₅ * + Cl₂ → C₂H₅Cl + Cl *

Un producto halogenado puede reaccionar además con un radical libre para producir como sigue;

C₂H₅Cl + Cl * → C₂H₅Cl₂

Explanation:

Answer:

The pressure of the gas inside the buret would be higher than ambient pressure if the level of the aqueous solution were 26 cm higher inside the buret than outside.

This is because the gas inside the buret is being compressed by the weight of the liquid column above it. The higher the liquid column, the greater the pressure on the gas. So when the level of the aqueous solution is 26 cm higher inside the buret than outside, it means that there is a greater weight of liquid pushing down on the gas, which increases the pressure of the gas.

It's important to note that the pressure inside the buret is not only due to the liquid column but also due to the atmospheric pressure. So the pressure of the gas inside the buret will be higher than ambient pressure but not only by 26cm of liquid column.

The particle that makes the atom an unstable isotope is the neutron. When there is an excess or a deficiency of neutrons in an atom's nucleus, it becomes an unstable isotope.

Unstable isotopes are isotopes that decay and emit radiation until they reach a stable state. They are also known as radioactive isotopes. The radioactive isotopes are unstable and have an unpredictable lifespan because they have an unstable ratio of neutrons to protons. This excess of neutrons in the nucleus results in a greater electrostatic repulsion between protons, causing instability and eventually decay.Neutrons are the particles that are responsible for making atoms unstable isotopes. The excess or deficiency of neutrons in an atom's nucleus leads to an unstable state and eventually decay. Radioactive isotopes are important for various practical applications such as nuclear power, radiography, and cancer treatment.

Therefore, neutrons makes the atom an unstable isotope. The decay of unstable isotopes can be used for many practical applications such as nuclear power, radiography, and cancer treatment.

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The percent dissociation of part A is 0.2% while that of part B is 0.68%

The percent ionization of an acid is a measure of the extent to which an acid dissociates in water. It is defined as the ratio of the concentration of ionized acid to the initial concentration of the acid

Given that;

α = √K/C

α =  percent ionization

K = dissociation constant

C = initial concentration

Thus;

α = √4.6×10^−7/0.1

= 0.2%

For part B;

α = √4.6×10^−7/0.01

= 0.68%

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A photon with a frequency has an energy of 10.74 x 1019 J.

The number of instances of a repeating event per unit of time is its frequency. It is frequently stated in Hertz (Hz), or one cycle per second. The number of full cycles that take place in one second is referred to as an oscillation or wave's frequency.

It can be determined by,

E = hv, where E is the energy, h is Planck's constant (6.626 x 1034 J/s), and v is the photon's frequency, and can be used to determine the energy of a photon.

Therefore, the energy of a photon with a frequency of 1.63 x 1015 s-1 can be determined as follows:

E = hv = 6.626 x 1034 J/s x 1.63 x 1015 s/1 = 10.74 x 1019 J

Therefore, a photon with a frequency of 1.63 x 1015 s-1 has an energy of 10.74 x 1019 J.

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Answer:

b. speed up, gain

Explanation:

Answer:

boron

Explanation:

boron is a metaloid meaning it has the property of a metal and a non metal located where metals and non metals meet on the periodic table

Answer:

The answer is boron, the second answer is chlorine

Explanation:

edge 2022, have a great day h0mies

The combustion of methane gas is spontaneous because once it is ignited it continues to burn on its own. Option A.

Spontaneous processes can go in a certain direction without needing to be driven by an external source of energy. A process that takes place by itself, without external influence or energy input. Spontaneous processes are chemical and/or physical changes that occur naturally without the constant intervention of external agents.

A spontaneous reaction is one that promotes the formation of a product under the conditions under which the reaction occurs. A roaring campfire is an example of a spontaneous response. Care should be taken not to confuse the term spontaneous with the idea that the reaction occurs rapidly. Spontaneous reactions are reactions that promote product formation even when the reaction is very slow. Reactions with negative values ​​of ΔG release free energy and are therefore spontaneous.

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The percent composition of oxygen in tripotassium phosphate is 30.15%.

Percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates mass of an element  to compound as,mass of element/mass of compound ×100.

In the given compound of tripotassium phosphate the molar mass is 212.27 g/mole, while that of oxygen is 16×4=64 g/mole.Thus, the percent composition of oxygen in tripotassium phosphate is 64/212.27×100=30.15%.

Thus, the percent composition of oxygen in tripotassium phosphate is 30.15%.

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To prepare a buffer with a pH of 4.00, the volume ratio of 0.110 M HCOONa to 0.125 M HCOOH is 1:1.

A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added to it. The pH of the buffer solution changes minimally when a small amount of strong acid or strong base is added to it.

To prepare a buffer solution, one should mix an acidic solution with a basic solution. The solution would be acidic or basic if only an acidic or basic solution is used, respectively.

To make a buffer solution with a desired pH, the acidic and basic solutions should be mixed in the correct proportion. To prepare a buffer solution with a pH of 4.00, the volume ratio of 0.110 M HCOONa to 0.125 M HCOOH is 1:1.

The Henderson-Hasselbalch equation can be used to determine the required amount of weak acid and salt (or weak base and salt) for a buffer solution.

C1 and C2 are the concentrations of solution 1 and solution 2, respectively.[A⁻] and [HA] are the molarities of the anion and acid in the solution, respectively. C1 = 0.110 M, C2 = 0.125 M

[A⁻] = 0.110 M, [HA] = 0.125 M(1 / V2) = (0.125 / 0.110)(0.110 / 0.125)

V2 / V1 = 1 / ((0.125 / 0.110)(0.110 / 0.125))

V2 / V1 = 1 / 1

V2 / V1 = 1:1

Therefore, the volume ratio of 0.110 M HCOONa to 0.125 M HCOOH required to prepare a buffer solution with a pH of 4.00 is 1:1.

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Answer:

because we bystanders can see them through the sky and from the ground.

Explanation:

pls give brainliest im almost lvled up.

Answer:

Air pressure and the density of the air are also less at high altitudes. The layer above the troposphere is called the stratosphere. Nearly all of the water vapor and dust particles in the atmosphere are in the troposphere. That is why most clouds are found in this lowest layer, too.

Explanation:

Solids are the most organized state of matter. States of matter change when energy is added or removed. Gas is the state of matter has the most movement of its particles.

The states of matter are the different forms of the matter in which it can exist. They are solids, liquids and gases. Solids are the states of matter in which molecules are very near to each other. They have fixed shape and volume. Liquids is the states of matter in which molecules are a little far from each other. They have different shape and fixed volume. Gas is the states of matter in which molecules are a very far from each other. They have different shape and different volume.

There are two more states of matter which are called as Plasma, Bose Einstein Condensate.

Plasma have highest energy and Bose Einstein Condensate have lowest energy.

Therefore, Solids are the most organized state of matter. States of matter change when energy is added or removed. Gas is the state of matter has the most movement of its particles.

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When attempting to pick up a stock bottle, it is important to hold the bottle properly to prevent accidents and spills.

Here are the general steps to follow: Ensure that the bottle is properly labeled and that you have the correct bottle for the intended use. Check the condition of the bottle for any signs of damage or leaks. If you detect any damage or leaks, do not use the bottle and notify the appropriate personnel. Put on any necessary personal protective equipment (PPE), such as gloves and safety glasses, before picking up the bottle. Hold the bottle with both hands, with one hand on the bottom of the bottle and the other hand on the neck of the stock bottle. This helps provide stability and balance. Lift the bottle slowly and steadily, being careful not to tip the bottle or drop it. If the bottle is heavy, use a cart or a dolly to transport it instead of carrying it by hand. When placing the bottle down, do so gently and carefully to avoid any spills or damage.

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The incorrect statement from the given options is, "Thermoplastics cannot be re-melted.

The incorrect statement from the given options is, "Thermoplastics cannot be re-melted.

Thermoplastics are those polymers or plastics that get melted when they are heated and then get harden again when they are cooled.

And they can be reheated and remolded again and again.

Thermosets are those polymers or plastics that cannot be re-melted after they have been formed.

And they get hardened permanently during the curing process.

They can only be made once and can’t be remolded.

The statement "Thermoplastics cannot be re-melted" is not true in the given options. So, this is the incorrect statement.

Chemical structure of thermoplastics remains unchanged during heating and shaping.

They remain in the same chemical form while heating and cooling, i.e., they do not undergo any chemical change during the melting and molding process.

On the other hand, molecular structure of thermosets is permanently changed during the curing process.

A chemical reaction occurs between the molecules during the curing process, resulting in the formation of 3D crosslinked structures that cannot be reversed. So, this statement is true about thermosets.

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