TÍNH HÁO TRỊ CỦA Fe trong hợp chất FeCL3 ; Fe3(SO4)3

The reaction of silver nitrate with copper is a substitution reaction. We have copper in its free state, Cu, and we have silver nitrate which has the formula AgNO3. The copper replaces the silver obtaining the following reaction:

The products obtained are copper nitrate and silver.

The word equation will be:

The ways that the brightness of the flame can be increased are shown below.

By boosting the airflow into the burner, the flame's brilliance can be improved. Increasing the gas flow rate or changing the air intake valve can do this.

Using a gas that generates a brighter flame, like propane or butane, will increase the brightness of the flame. These gases produce a yellow flame because they have a higher carbon to hydrogen ratio than natural gas.

Learn more about laboratory flame:https://brainly.com/question/9018811

#SPJ1

Answer:

Mass = 20 g

Explanation:

Given data:

Number of moles of He = 5 mol

Mass of He = ?

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass = 4 g/mol

by putting values,

5 mol = Mass / 4 g/mol

Mass = 5 mol × 4 g/mol

Mass = 20 g

The amount of energy that must be absorbed or lost to raise or lower the temperature of 1 gram of liquid water by 1°C is 1 calorie.

A calorie (cal), or a small calorie, is the amount of energy needed to heat one gram of water by one degree Celsius. It is used to express the amount of energy released in a phase change or chemical reaction.

One small calorie is approximately 4.2 joules.

A calorie is a unit of energy.

A calorie was originally part of the metric system (SI), but now it is replaced with the joule (J).

More about calorie: brainly.com/question/14555454

#SPJ4

Answer:

The molarity (M) of a solution is calculated by dividing the moles of solute by the volume of solution in liters.

First, we need to calculate the moles of aluminum chloride:

moles of AlCl3 = mass / molar mass

moles of AlCl3 = 20.0 g / 133.34 g/mol

moles of AlCl3 = 0.150 mol

Next, we need to convert the volume of solution from milliliters to liters:

volume of solution = 500 mL / 1000 mL/L

volume of solution = 0.500 L

Finally, we can calculate the molarity of the solution:

Molarity = moles of solute / volume of solution

Molarity = 0.150 mol / 0.500 L

Molarity = 0.30 M

Therefore, the molarity of the aluminum chloride solution is 0.30 M.

The solubility of SO2(g) increases when the pressure is increased at a constant temperature.

When the pressure is increased, according to Henry's law, the solubility of a gas in a liquid also increases. In the case of SO2(g), as the pressure is increased, more gas molecules are forced into contact with the liquid (usually water) in which they dissolve.

This increases the number of gas molecules that can dissolve and thus increases the solubility of SO2.

The increase in pressure favors the dissolution of gas molecules into the liquid phase because it creates a higher concentration of gas molecules above the liquid surface.

This higher concentration gradient drives more gas molecules to dissolve, leading to an increase in solubility.

It's important to note that solubility changes with pressure follow Henry's law only for ideal solutions and under conditions where other factors like temperature and chemical interactions remain constant.

The relationship between solubility and pressure can vary for different gases and solvents.

In summary, increasing the pressure of SO2 gas at a constant temperature will result in an increase in its solubility in a liquid, following Henry's law.

To know more about "Pressure" refer here:

https://brainly.com/question/30638771#

#SPJ11

Answer:

50°F,  70°F

Explanation:

Answer:

50 and 70 degrees F

Explanation:

got it right on the quiz on edge

Answer:

i need this im struggling with my work

Explanation:

Last one and the first

Answer: When an electric current is passed through a substance to effect a chemical change.

Answer:

H₂

Explanation:

To solve this question we must find, as first, find the molar mass of the homonuclear diatomic gas using Graham's law. With the molar mass we can identify this gas

Graham's law:

\(\frac{V_a}{V_b} =\sqrt{\frac{m_B}{m_A} }\)

Where V is the speed of the gases and m the molar mass of those:

As Va is 3.98 times Vb (And mB is molar mass of oxygen gas = 32g/mol)

\(3.98 =\sqrt{\frac{32g/mol}{m_A} }\)

15.84 = 32g/mol / mA

mA = 2.02g/mol

As is a homonuclear diatomic gas, the molar mass of the atom is 1.01g/mol. Thus, the gas is:

Mixture- honey, seawater, blood,  mud

element- hydrogen, calcium

compund- magnesium oxide,  copperII sulfate, potassium iodide solution.

A mixture is a material composed of two or more different chemical substances that are not chemically bonded. A mixture is the physical combination of two or more substances that retain their identities and are mixed in the form of solutions, suspensions, and colloids.

Element is a free and open-source instant messaging client that uses the Matrix protocol. End-to-end encryption, private and public groups, file sharing between users, voice and video calls, and other collaborative features are supported by Element via bots and widgets.

A compound is a substance made up of two or more different chemical elements combined in a fixed ratio in chemistry. When the elements combine, they react and form chemical bonds that are difficult to break. These bonds form as a result of atoms sharing or exchanging electrons.

To know more about element visit:

https://brainly.com/question/13025901

#SPJ1

The temperature of the water and the chromium : 25.122 ° C  

The law of conservation of energy can be applied to heat changes, i.e. the heat received / absorbed is the same as the heat released  

Q in(gained) = Q out (lost)

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

Q Chromium= Q water

\(\tt 60\times 0.11\times (82-t)=80\times 4.18\times (t-24)\\\\541.2-6.6t=334.4t-8025.6\\\\341t=8566.8\\\\t=25.122^oC\)

1.596 grams of sodium hydrogen carbonate would be necessary to produce 425 mL of \(CO_{2}\) at STP.

To calculate the amount of sodium hydrogen carbonate needed to produce 425 mL of \(CO_{2}\), you can use the following steps:

Convert the volume of \(CO_{2}\) to moles using the molar volume at STP:

425 mL ÷ 1000 mL/L = 0.425 L \(CO_{2}\)

0.425 L \(CO_{2}\) ÷ 22.4 L/mol = 0.019 moles \(CO_{2}\)

Use the balanced chemical equation to determine the stoichiometry between sodium acetate and carbon di oxide:

\(NaC_{2} H_{3} O_{2}\) \(+ H_{2} O + CO_{2}\) → \(Na HC_{3} O_{2}\)\(+ CH_{3} COOH\)

For every 1 mole of sodium acetate, 1 mole of CO2 is produced. Therefore,

0.019 moles CO2 = 0.019 moles \(NaC_{2} H_{3} O_{2}\)

Calculate the mass of sodium hydrogen carbonate needed using its molar mass:

0.019 moles \(NaC_{2} H_{3} O_{2}\) × 84.01 g/mol = 1.596 g \(Na HC_{3} O_{2}\)

Learn more about moles, here:

https://brainly.com/question/14676971

#SPJ1

In a single-effect evaporator, the goal is to concentrate a feed solution of organic colloids from 6 to 50 wt%. The solution does not experience a significant boiling-point elevation.

The heat capacity of the feed solution is 4.06 kJ/kg·K, and it enters the evaporator at 15.6°C. The system utilizes saturated steam at an absolute pressure of 101.32 kPa for heating purposes.

The absolute pressure in the evaporator's vapor space is 15.3 kPa. The desired evaporation rate is 4536 kg/hr of water. The overall heat transfer coefficient is 0.1988 W/m²·K, obtained from steam tables at a temperature difference of 100°C.

For more such questions on concentrate

https://brainly.com/question/23437000

#SPJ11

Answer:

Making observation

Explanation:

Answer:

because battery have it's own voltage in it's composition

Answer:

amphibians

Explanation:

because frogs have to stay in water while tadpole then they come to land

Answer:

Amphibians

Explanation:

It is amphibians.

The concentration is tested by titration with potassium permanganate, and each sample is tested twice Replication- 10/20/30 hours.

Hydrogen peroxide is a chemical compound that is gaseous in nature.

Since it is unstable it slowly decomposes in the presence of light to form water and oxygen. The control experiment is necessary for the determination of reliability and statistical significance of results obtained.

Testing the concentration of the species after exposure to air for 10,20 and 30 hours is randomization. Replication refers to the number of times the same experiment is carried out. It enhances the reliability of the result of an experiment.

Testing each sample twice is replication.

To know more about the Hydrogen peroxide, here

brainly.com/question/18709693

#SPJ4

Answer:

helium

Explanation:

The first ionization energy varies in a predictable way across the periodic table. The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.

Answer: 2nd answer " C "

Explanation:

First ionization energy is a periodic trend that increases up and to the right on the periodic table. After looking at the position of these elements on the periodic table, carbon is clearly the best answer-choice (B) aka " C "

Answer:

There are mechanical energies. These consist of kinetic energy and gravitational potential energy.

Kinetic energy is the energy an object contains when it is in motion. Ex.: A car moving, a ball falling off of a building.

Gravitational potential energy is the potential for an object to do work at a certain height. If a 1 kg ball is placed 1 meter high, it has 9.8 Joules of potential energy, represented with the equation, Ug=mgh.

There are Non-Mechical Energies, which I assume you are trying to get. There is Thermal Energy, Electrical Energy, Light, Sound, Nuclear Energy, and Chemical Energy.

Thermal Energy is essentially heat. Friction causes thermal energy.

Electrical energy is potential difference. It is the work that can be done by a point charge.

Nuclear energy is like fission and fusion

Chemical energy is energy from chemical processses. Think, photosynthesis for example.

Sound is molecules hitting other molecules. It occurs a lot with friction as well.

Light is, well, you know what light is.

Explanation:

please let me know.. hope It helps you

please follow me for more information about anything

Both batteries and fuel cells are devices that convert chemical energy into electrical energy through spontaneous redox reactions, but the main difference is that batteries are self-contained and have a finite amount of stored energy, while fuel cells require a continuous supply of fuel to sustain the reaction.

Batteries and fuel cells are both electrochemical devices that convert chemical energy into electrical energy through spontaneous redox reactions.

In batteries, this energy is stored chemically within the cell and can be released as electrical energy as needed. However, batteries have a finite amount of stored energy and need to be recharged or replaced when depleted.

On the other hand, fuel cells require a continuous supply of fuel, such as hydrogen or methanol, and an oxidizing agent, such as oxygen, to sustain the redox reaction that produces electricity.

Fuel cells can operate continuously as long as fuel and an oxidizing agent are supplied, making them useful for applications such as electric vehicles and stationary power generation. Additionally, fuel cells produce only water and heat as byproducts, making them a cleaner alternative to traditional combustion engines.

For more questions like Reaction click the link below:

https://brainly.com/question/30086875

#SPJ11

When \(CO_{2}\) and \(H_{2} CO_{3}\) are both horizontal lines, the rate of the forward reaction is the same as the rate of the reverse reaction. The reaction is occurring at equilibrium, with no net change in the concentrations of reactants and products over time.

When the concentration of carbon dioxide \(CO_{2}\) and the concentration of carbonic acid \(H_{2} CO_{3}\) are both horizontal lines, it indicates that their concentrations remain constant over time. In such a scenario, the rate of the forward reaction is the same as the rate of the reverse reaction. A horizontal line on a concentration-time graph suggests that the concentrations of the reactants and products are not changing, implying that the reaction has reached equilibrium. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. This is a fundamental principle of chemical equilibrium, described by the principle of microscopic reversibility.

For more question on reaction

https://brainly.com/question/25769000

#SPJ8

(1) The overall equation for the gas phase decomposition of oxygen difluoride based on the given mechanism can be written as:

\(2OF_{2} -- > O_{2} + 2F_{2}\)

(2) The species that acts as a reaction intermediate in this mechanism is  \(O_{2} F_{4}\)

(3) The rate law for the overall reaction can be determined by looking at the rate-determining step, which is the slowest step in the mechanism. In this case, step 2 is the rate-determining step since it is the slowest. The rate law for step 2 can be written as: rate = \(K[O_{2} F_{4} ]\)

Since the concentration of \(O_{2} F_{4}\)is determined by the fast equilibrium in step 1, we can substitute the concentration of \(O_{2} F_{4}\) in terms of the concentrations of\(OF_{2}\) and \(F_{2}\) using the equilibrium expression:

\(K_{C} = O_{2} F_{4} / OF_{2}^{2F_{2} }\)

Therefore, \(O_{2} F_{4} = K_{C}[OF_{2}]^{2F_{2} }\)

Substituting this expression into the rate law for step 2 gives: rate =  \(kK_{C} [OF_{2}^{2F_{2}}]\). Simplifying this expression gives the final rate law for the overall reaction: rate = k' \([OF_{2} ]^{2F_{2} }\)where k' = \(kK_{C}\) is the rate constant for the overall reaction.

To know more about phase decomposition refer here:

https://brainly.com/question/14786395?#

#SPJ11

Answer:

On average, a driver's side airbag can inflate to a volume of around 60 to 80 liters (16 to 21 gallons), while a passenger's side airbag can inflate to a volume of around 100 to 120 liters (26 to 32 gallons).

Explanation:

The reaction in an airbag involves several elements and compounds, including:

1. Sodium azide (NaN3): This is a primary component of the propellant used in most airbag systems. When heated, sodium azide decomposes into nitrogen gas (N2) and sodium metal.

2. Potassium nitrate (KNO3): This is another component of the propellant that provides additional oxygen to support the combustion of sodium azide.

3. Silica (SiO2): This is a common material used in the manufacture of airbag fabrics. When the airbag inflates, the silica particles in the fabric help to prevent the bag from tearing or puncturing.

4. Nitrogen gas (N2): This is the primary gas produced during the airbag reaction. The nitrogen gas is used to inflate the airbag quickly and provide a cushion between the vehicle occupant and hard surfaces.

5. Carbon dioxide (CO2): This is a secondary gas produced during the airbag reaction. The CO2 is produced as a result of the combustion of sodium azide and the reaction between sodium metal and water vapor present in the air.

Answer:

Explanation:

A double displacement reaction is a reaction in which exchange of ions takes place

Sodium in sodium hydroxide displaced copper in copper(II)nitrate to form sodium nitrate and copper replaced sodium to form copper(II)hydroxide

If decomposition stopped completely, it would have a significant impact on atmospheric \(CO_{2}\) concentrations. Decomposition plays a crucial role in the carbon cycle by breaking down organic matter and releasing \(CO_{2}\) back into the atmosphere. Here's what would happen if decomposition ceased:

Reduced \(CO_{2}\) Release: Decomposition is responsible for releasing \(CO_{2}\) into the atmosphere as a byproduct of organic matter breakdown. Without decomposition, the natural recycling of carbon would be disrupted, leading to a significant reduction in \(CO_{2}\) release.

Decreased Carbon Sink: Decomposition contributes to the cycling of carbon between the atmosphere, plants, and soil. When organic matter decomposes, some of the carbon is stored in the soil as humus or becomes incorporated into new plant growth. With halted decomposition, this carbon storage and uptake would be greatly reduced, resulting in decreased carbon sequestration from the atmosphere.

Accumulation of Organic Matter: Without decomposition, dead organic matter would accumulate instead of being broken down. This accumulation could result in carbon-rich materials such as leaf litter, dead plant material, and organic waste not being fully processed, leading to a buildup of organic carbon over time.

Imbalance in the Carbon Cycle: Decomposition plays a vital role in maintaining a balance in the carbon cycle, where carbon is continuously exchanged between living organisms, the atmosphere, oceans, and the Earth's crust. If decomposition stopped, this balance would be disrupted, potentially leading to an imbalance in the carbon cycle and affecting other interconnected processes.

While the exact impact on atmospheric \(CO_{2}\) concentrations would depend on various factors and the timescale considered, the cessation of decomposition would likely result in a decrease in \(CO_{2}\) released into the atmosphere and a reduced capacity for carbon storage. However, it's important to note that decomposition is just one component of the carbon cycle, and there are other processes and factors influencing atmospheric \(CO_{2}\) concentrations, such as photosynthesis, respiration, and human activities.

Learn more about decomposition:

https://brainly.com/question/14608831

#SPJ11

The formula that represents an isomer of the compound is formula 1.

The formula that represents a saturated hydrocarbon is C₃H₈.

The formula that represents a saturated hydrocarbon is C₆H₁₄.

A saturated hydrocarbon is one in which there are only single carbon-carbon bonds. A hydrocarbon is an organic substance made up only of hydrogen and carbon.

The general formula of saturated hydrocarbons is CₙH₂ₙ ₊₂.

The compounds C₃H₈ and C₆H₁₄ follow the general molecular formula of saturated hydrocarbons.

Isomers are compounds that have the same molecular formula but different structural formulas.

Learn more about saturated hydrocarbons at: https://brainly.com/question/1364774

#SPJ1

Option D is correct. It is independent of the reaction pathway.

Hesslaw states that the enthalpy change of a reaction does not change regardless whether the reaction takes place in a single or multiple reaction pathways.

This shows that the total entalpy change of a reaction does not depend on the reaction pathway.