you have 0.5 liters of a gold chloride solution you add 0.5 liters to the solution creating one liter of solution with a concentration of 0.26 M. what was the original concentration.

The dot structure that can be shown to be incorrect is the dot structure that has been shown by option A

The Lewis structure is based on the concept that atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration similar to that of a noble gas. In the Lewis structure, the valence electrons of the atoms are represented as dots around the symbol of the atom.

We can see that in the dot structure that is in option A the both atoms are coming from the hydrogen atoms and shoud not be differently marked.

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The conical flask is an important piece of laboratory equipment that is commonly used in experiments that involve mixing, heating, or storing liquids.

In many cases, this flask is used to collect the filtrate that is obtained from the Buchner flask during a filtration process.
The Buchner flask is used to separate solids from liquids by applying vacuum pressure to the mixture. The solid particles are trapped by a filter paper placed on top of the flask, while the liquid passes through the filter paper and collects in the flask below. This liquid is referred to as the "filtrate".
When the filtrate is collected in the Buchner flask, it is not always perfectly clean. Sometimes there may be small particles of solid material or other contaminants that are still present in the liquid. In order to ensure that the conical flask is free of any contaminants before it is used to store the filtrate, it is important to rinse it with the filtrate from the Buchner flask.
This is because the rinsing process helps to remove any remaining particles or impurities that may be present in the conical flask. By doing this, the filtrate that is collected in the conical flask is less likely to be contaminated, which can help to ensure the accuracy and reliability of any experiments that rely on this liquid.
Overall, rinsing the conical flask with the filtrate from the Buchner flask is an important step in the filtration process, as it helps to ensure that the filtrate is free from contaminants and ready for use in further experiments.

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Answer: true

Explanation:

Ocean salinity will vary with evaporation as well as with freezing and thawing. this statement is true.

Salinity, commonly known as saline water (also see soil salinity), is the degree of saltiness or the quantity of salt dispersed throughout a body of water. The standard units of measurement are grammes of salt per litre (g/L) or grammes per kilogramme (g/kg; the latter one is dimensionless therefore equal to ).

Salinity is a thermodynamic condition variable that, along with pressure and temperature, controls physical properties like the density also heat capacity of the water. Salinity plays a significant role in defining numerous facets of the chemical composition of natural waters as well as the biological processes within them. Ocean salinity will vary with evaporation as well as with freezing and thawing. this statement is true.

Therefore, ocean salinity will vary with evaporation as well as with freezing and thawing. this statement is true.

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Answer:

6

What do AIA, SAG, AFP and AMA all stand for? Select four options.

American Institute of Architects

American Society of Mechanical Engineers

American Medical Association

Screen Actors Guild

Association for Finance Professionals

Professional Colleges

The FMU-143 fuze is presently being used with the GBU-15 and AGM-130 munitions.

FMU-143 fuze is an electro-mechanical impact fuze used in aerial bombs and artillery shells. It is primarily used by the United States Air Force and Navy for various types of high-explosive bombs and can be employed with both general-purpose bombs and cluster bombs.

The FMU-143 fuze is presently being used with the GBU-15 and AGM-130 munitions. These are precision-guided weapons that are employed for various military operations. The GBU-15 is a glide bomb, while the AGM-130 is an air-to-ground missile. The FMU-143 fuze serves as a critical component for ensuring the safe and reliable functioning of these munitions.

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Answer:

\(m_{solvente}=2400mg\)

Explanation:

¡Hola!

En este caso, con la información dada, es posible inferir que este problema es acerca del porcentaje en masa del soluto y que se calcula de la siguiente manera, en términos de la masa de soluto y solución:

\(\% m=\frac{m_{soluto}}{m_{solucion}} *100\%\)

De este modo, como conocemos el porcentage y la masa del soluto, podemos calcular la masa de la solución primero:

\(m_{solucion}=\frac{m_{soluto}}{\% m} *100\%\\\\m_{solucion}=\frac{600mg}{20\%} *100\%\\\\m_{solucion}=3000mg\)

Esto quiere decir que la masa del solvente es:

\(m_{solvente}=m_{solucion}-m_{soluto}\\\\m_{solvente}=3000mg-600mg\\\\m_{solvente}=2400mg\)

¡Saludos!

The order of refrigerants in terms of their global warming potential (GWP), from most damaging to least damaging, is CFC-12, CFC-502 HCFC-123

CFC-12 (also known as dichlorodifluoromethane) has the highest GWP among the options listed, making it the most damaging in terms of contributing to global warming. CFC-12 is a chlorofluorocarbon (CFC) compound that has been widely used as a refrigerant but is now being phased out due to its ozone-depleting properties.

CFC-502 (a blend of chlorodifluoromethane and trichlorofluoromethane) has a lower GWP compared to CFC-12 but is still considered highly damaging to the environment.

HCFC-123 (known as 2,2-dichloro-1,1,1-trifluoroethane) is a hydrochlorofluorocarbon (HCFC) refrigerant with a lower GWP compared to CFCs. HCFCs were introduced as transitional replacements for CFCs due to their lower ozone-depleting potential. However, HCFCs also contribute to global warming and are being phased out.

Carbon dioxide (CO2) is not a synthetic refrigerant but is included in the options. While CO2 is a greenhouse gas and contributes to global warming, its GWP is significantly lower than that of CFCs and HCFCs. CO2 is considered a more environmentally friendly refrigerant option compared to synthetic fluorocarbon compounds.

It's important to note that this ranking is based on GWP, which is a measure of the warming potential of a substance over a specified time frame compared to carbon dioxide. Other factors, such as ozone depletion potential and toxicity, may also be considered when evaluating the overall environmental impact of refrigerants.

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Given,TiCl4 + 2H2O → TiO2 + 4HClMolar mass of TiCl4 = 189.6 g/mol. Molar mass of TiO2 = 79.9 g/molNow, the balanced chemical equation is;TiCl4 + 2H2O → TiO2 + 4HClNow, for producing 1 mol of TiO2, 1 mol of TiCl4 is required.

Also, the molar mass of TiO2 is 79.9 g/mol.Moles of TiO2 = Given mass/Molar mass = 50/79.9 = 0.625 molMoles of TiCl4 required = Moles of TiO2 = 0.625 molNow, the percentage yield is given as 78.9%.Therefore,Actual yield = 78.9/100 × Theoretical yield.

Theoretical yield = Moles of TiCl4 × Molar mass of TiCl4 = 0.625 × 189.6 = 118.5 g. Actual yield = 78.9/100 × 118.5 g = 93.48 gTherefore, the mass of TiCl4 required to produce 50.0 g of TiO2 with 78.9% yield is 118.5 g (Theoretical yield) and 93.48 g (Actual yield).

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The equation must have the following form to be balanced: 4CO2 + 2H2O = 2C2H2 + 5O2

S8: O2 = 1/8; S8 utilized = 240/8 = 30SO2 generated is equal to the number of sulphur molecules used, which is 240. Stoichiometry is the name given to the study of chemical processes in mathematics. Numerous calculations can be done, such as stoichiometry, which is most usually performed with moles but can also be done with masses and even percentages. Stoichiometric ratio A stoichiometric ratio is important when considering the interactions between specific elements or molecules. This exact ratio of reactant to product coefficients is necessary for a reaction to occur properly. Let's discuss some problems you can run across when you learn about stoichiometry. Chemical Equations in Balance Equations needing to be balanced is a fairly common stoichiometric issue type. This is an essential chemistry skill since a reaction can only occur if the ratio of reactants to products is correct.possess. Additionally, it provides an essential framework for organic chemistry. Balance the ensuing reply: _ CO2 + _ H2O C2H2 + _ O2 To be balanced, equations must have an equal number of each element on both sides of the reaction. Before balancing the oxygen, you can start by balancing the carbons and hydrogens. The equation must have the following form to be balanced: 4CO2 + 2H2O = 2C2H2 + 5O2

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Answer:

7) 50 8)4

Explanation:

I answered the question what do you want to gave me

Answer:

131.293 u

Explanation:

The ability of soils to resist changes in pH is called soil buffering capacity.

soil pH is a measure of the acidity or alkalinity of the soil. It plays a crucial role in determining the availability of nutrients to plants and the overall health of the soil ecosystem. The ability of soils to resist changes in pH is known as soil buffering capacity.

Soil buffering capacity is determined by the presence of certain minerals, such as calcium carbonate. These minerals can neutralize acids or bases and help maintain a relatively stable pH in the soil. Soils with high buffering capacity are less prone to pH fluctuations, while soils with low buffering capacity can experience significant pH changes in response to external factors.

When soils have a high buffering capacity, they can effectively resist changes in pH even when acidic or alkaline substances are added. This is important for maintaining optimal conditions for plant growth and nutrient availability.

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The ability of soils to resist changes in pH is called buffering capacity.

The ability of a substance such as soil to withstand a pH change when an acidic or basic solution is introduced is called its buffering capacity. The buffering capacity is essential for soil because stable pH levels are necessary to support the best conditions for plant growth.

The effects of acidic or alkaline compounds can be efficiently neutralized by soils with a large buffering capacity, which has little effect on pH levels. It is often associated with the presence of elements such as carbonates, bicarbonates, and especially clay minerals, which have the ability to absorb or release hydrogen ions and therefore contribute to the maintenance of a pH environment that is generally stable. .

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Your question is incomplete, most probably the complete question is:

the ability of soils to resist changes in ph is called ___________

The products obtained when benzene is treated with following reagents,

(a) C₆H₆ - SO₃H

(b) C₆H₆ - NO₂

(c) C₆H₆ - Cl

(d) C₆H₆ - CH₃Cl

(e) C₆H₆ - Br

(f) C₆H₆ - NH₂

Generally benzene is described as a colorless or light-yellow chemical which remains as liquid at room temperature. Benzene is basically used primarily as a solvent in most of the chemical and pharmaceutical industries, and also as a starting material and an intermediate during the synthesis of numerous chemicals, and in gasoline.

When benzene is treated with different reagents it produces different products which are used is different purposes.

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The concentration of the HCI solution : 0.767 M

Reaction

Na₂CO₃ (aq) + 2 HCl (aq) → 2 NaCl (aq) + CO₂ (g) + H₂O (l)

mass of CO₂ = 11.1 g

mol of CO₂ (MW= 44,01 g/mol) :

\(\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{11.1}{ 44,01}\\\\mol=0.252\)

From the equation above, mol ratio of HCl : CO₂ = 2 : 1, so mol HCl :

\(\tt mol~HCl=\dfrac{2}{1}\times 0.252=0.504\)

Molarity shows the number of moles of solute in every 1 liter of solution.

\(\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}\)

The molarity of unknown HCl :

mol=n=0.504

volume=V=657 ml=0.657 L

\(\tt M=\dfrac{0.504}{0.657}\\\\M=0.767\)

Answer:

They will balance each other out.

Explanation:

Strong acids are low on the pH scale, strong bases are high. Putting them together will bring it closer to the center of the scale, where they are equal.

Answer: D

Explanation: Metals are solid at room temp and also are shiny and can be flattened or broken into pieces when hammered and some metals are high and low conductors of electricity.

Metals have a characteristic property of conduction and malleability  and thus  sample 1 is metallic.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .

When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

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The rate constant for the reaction at 35 °C is 7.44 × 10^6 M^−1 s^−1. The initial rate of the reaction at 35 °C is 7.50 × 10^-1 M/s. The ratio is greater than 1, OH^- is limiting. The rate constant at 50°C is 2.05 × 10^11 M^−1 s^−1.

A: To predict the rate constant for the reaction at 35 °C, the Arrhenius equation can be used:

k = Ae^(-Ea/RT)

Where k is the rate constant, A is the frequency factor, Ea is the activation energy, R is the gas constant (8.31 J/mol K), T is the temperature in Kelvin (35 + 273 = 308 K), and e is the base of the natural logarithm.

Plugging in the values, we get:

k = 2.10 × 10^11 e^(-86,800/8.31*308)

k = 2.10 × 10^11 e^(-10.51)

k = 2.10 × 10^11 * 3.52 × 10^-5

k = 7.44 × 10^6 M^−1 s^−1

So the rate constant for the reaction at 35 °C is 7.44 × 10^6 M^−1 s^−1.

B: To find the initial rate at 35 °C, the concentration of each reactant must first be calculated. The concentration of KOH is given by:

C_KOH = m/V = 0.359 g / (228.0 mL * 10^-3 L/mL) = 1.57 × 10^-3 M

The concentration of C2H5I is:

C_C2H5I = m/V = 1.477 g / (228.0 mL * 10^-3 L/mL) = 6.48 × 10^-3 M

The initial rate of the reaction can be found using the rate law, which states that the rate is proportional to the product of the concentrations of each reactant raised to the power of its stoichiometric coefficient:

rate = k * [C2H5I] * [OH^-]

Since the reaction is first order in each reactant, the rate law can be written as:

rate = k * [C2H5I] * [OH^-] = k * 6.48 × 10^-3 * 1.57 × 10^-3 = k * 1.01 × 10^-5

Plugging in the rate constant from Part A, we get:

rate = 7.44 × 10^6 * 1.01 × 10^-5 = 7.50 × 10^-1 M/s

So the initial rate of the reaction at 35 °C is 7.50 × 10^-1 M/s.

C: To determine which reagent is limiting, the molar ratio of each reactant must be compared to its stoichiometric ratio in the reaction. The stoichiometric ratio of C2H5I to OH^- is 1:1, so if the molar ratio of C2H5I to OH^- is less than 1:1, then C2H5I is limiting. If the molar ratio is greater than 1:1, then OH^- is limiting.

The molar ratio of C2H5I to OH^- is:

[C2H5I]/[OH^-] = 6.48 × 10^-3 M / 1.57 × 10^-3 M = 4.12

Since this ratio is greater than 1, OH^- is limiting.

D: To calculate the rate constant at 50°C, we need to use the Arrhenius equation, which states that the rate constant k is related to the activation energy E and the temperature T by the following equation:

k = Ae^(-E/RT),

where A is the frequency factor, R is the gas constant (8.31 J/mol•K), and T is the temperature in Kelvin.

First, we need to convert the temperature to Kelvin: 50°C = (50 + 273.15) K = 323.15 K.

Next, we can plug in the values for A, E, and T into the equation:

k = 2.10 × 10^11 e^(-86.8 kJ/mol / (8.31 J/mol•K) (323.15 K)) = 2.10 × 10^11 e^(-0.02653) = 2.10 × 10^11 (0.9735) = 2.05 × 10^11 M^−1 s^−1.

So, the rate constant at 50°C is 2.05 × 10^11 M^−1 s^−1.

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To calculate the molarity of cinoxate in 100 ml of sunscreen B16, we need to know the mass of cinoxate present in 100 ml of B16.

First, we can calculate the mass of B16 by multiplying its density (1.0 g/ml) by its volume (100 ml), which gives us 100 g.
Next, we can calculate the moles of cinoxate by dividing the mass of cinoxate by its molar mass. The molar mass of cinoxate is given as 250 g/mol.

Since we don't have the mass of cinoxate, we cannot provide a long answer to your question. However, if you provide the mass of cinoxate, I would be happy to help you calculate the molarity.

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The chemical notation provided consists of several ions, including Na+ (sodium ion), Ca+ (calcium ion), Cl- (chloride ion), and S2- (sulfide ion). Among these ions, only Na+ represents an atom that has lost one electron, not two. The "+1" charge on Na+ indicates that it has lost one electron to achieve a stable electron configuration, leaving it with one fewer electron than the neutral sodium atom.

An atom that loses two electrons would have a +2 charge, indicating the loss of two negatively charged electrons. One example of an atom that loses two electrons is Mg2+ (magnesium ion). The magnesium atom has a neutral charge when it has 12 electrons, but by losing two electrons, it becomes Mg2+ with a 10-electron configuration. The "2+" charge indicates that the magnesium ion has a positive charge of 2, resulting from the loss of two electrons.

In summary, the correct chemical notation for an atom that has lost two electrons is represented by an ion with a "+2" charge, such as Mg2+, not by any of the ions listed in the given chemical notation.

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Total heat generated by 2 mole of TiO2(s) is 4.963kJ.

The amount of heat released in the reaction of 2.89 mol of TiO2(s) can be calculated using the following equation: q = nCΔT, where n is the number of moles, C is the specific heat capacity of TiO2, and ΔT is the change in temperature.

The specific heat capacity of TiO2 is 683. 697. J/kgK. and the change in temperature is is 25k. By plugging in the values and converting J to kJ,

q = 2.89 * 25 * 683.697

=> 4963.35

In brief, the amount of heat released by 2.89 mol of TiO2(s) is 4.963kJ.

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Complete question :

determine how much heat (in kj) of 2.89 mol of tio2(s) with a temperature difference of 25k

Answer:

Because it's a system in the solar areas.

Explanation:

Im just tryna sound smart, I actually have no clue

Answer:

The Latin word for the Sun is Sol, so we call this system the Solar System. He showed that it was very likely that all the planets moved around the Sun. This time even more people thought Galileo may be right and that the Earth really did move around the Sun.

Explanation:

There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is named the "solar" system because our Sun is named Sol, after the Latin word for Sun, "solis," and anything related to the Sun we call solar.

Hope That Helps :0

io3−(aq) is the stronger oxidizing agent because the reduction potential of io3−(aq) is greater than i2(s).

Thus, i2(s) and io3- (aq) are both oxidizing agents as they have the ability to oxidize other substances by accepting electrons. However, the stronger oxidizing agent can be determined by considering their reduction potentials.

Reduction potential is a measurement of the tendency of a substance to  undergo reduction by gaining electrons. A substance with higher reduction potential will be a stronger oxidizing agent and the reduction potential of io3−(aq) is greater than i2(s) as io3- can more easily accept electrons and undergo reduction, making it a stronger oxidizing agent.

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Answer:

force ε: the increase in potential energy per unit charge provided by the chemical reactions in the battery. And the voltage difference across the light bulb is: ∆V = I R = (0.06 A)(20 Ω) = 1.2 V ▪If we measure the voltage difference across the battery or the light bulb, we will get 1.2 V.

Explanation:

please mark this answer as brainlest

Answer:

Different alleles and genes determine what gets passed down.

Explanation:

Its a pretty weird/ open ended question, but the alleles that help an organism survive, will be passed down more often because they are more "fit" and can out survive its competitors within a certain species.

Answer:

ability to combine with oxygen

abality to combine with oxyyen

a. When the box is opened after ten days, you would notice that the plant has grown towards the hole in the box.

b. This response is useful because it allows the plant to maximize its exposure to light for photosynthesis, ensuring its survival and growth.

c. Other stimuli the stem of a plant may respond to include gravity, touch, chemicals, water, and temperature.

a. When the box is opened after ten days, you would likely notice that the plant has grown towards the small hole in the box. The stem of the plant would have elongated and bent to direct its growth towards the source of light.

b. This response of the plant is useful because it demonstrates phototropism, which is the plant's ability to respond and grow towards a light source.

By growing towards the hole and orienting itself towards the light, the plant is maximizing its exposure to sunlight, which is essential for photosynthesis. Sunlight provides the energy necessary for the plant to produce food and carry out various metabolic processes. Therefore, the plant's response helps it optimize its chances of survival and growth.

c. Apart from light, plants can respond to various other stimuli. Some examples of stimuli to which the stem of a plant may respond include:

Gravitropism: Plants can respond to gravity by orienting their growth in relation to the gravitational force. The stem may grow upwards against gravity (negative gravitropism) or downwards with gravity (positive gravitropism).

Thigmotropism: This is the response of a plant to touch or physical contact. The stem may grow towards or away from a physical support or object it comes in contact with.

Chemotropism: Plants can respond to chemicals in their environment. For example, the stem may grow towards or away from a particular chemical stimulus.

Hydrotropism: This is the response of plants to water. The stem may grow towards a source of water, allowing the plant to access the necessary moisture for survival.

Temperature: Plants can also respond to changes in temperature. For example, the stem may grow towards warmer temperatures or away from extreme heat or cold.

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The concentration of the potassium dichromate used to make the new solution is 0.0763 M.

The total volume of the new solution is 379 + 448 = 827 mL.

The total amount of potassium ions in the new solution is 0.713 * 827 = 594.491 mol.

The amount of potassium bromide in the new solution is 0.12 * 379 = 45.48 mol. The amount of potassium dichromate in the solution is 594.491 - 45.48 = 549.011 mol.

The concentration of potassium dichromate in the solution is 549.011 / 448 = 0.0763 M.

The concentration of the potassium dichromate used to make the new solution is 0.0763 M.

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Answer:

lpg and oxygen are two gases which are supplied in compressed form in homes and hospitals

Explanation:

The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

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