How are resonance structures for a molecule or polyatomic ion represented?
As a progression of structures.
The parts of each structure that vary are circled.
The parts of each structure that vary are highlighted.
With a double-headed arrow in between each structure.

Please find the equation to form copper (I) ion from neutral copper (Cu) below:

Hence, the correct equation is   mentioned above.

Learn more about oxidation here:

brainly.com/question/16976470

#SPJ9

Answer:

3 x 10⁻² g/mL

Explanation:

First you need to remember when you are dividing an exponent by another exponent, you subtract the bottom exponent from the top exponent.

So 10⁻³   -  10⁻1  you would take  ( -3) - ( -1).  When you subtract a negative number you change it into a positive number and add it to the first.

It is ( -3)  +  ( 1).    So 10⁻³ - 10⁻¹   =  10⁻².    You added 1 to the -3.

Now you just have to divide the whole numbers  6 ÷ 2 = 3

Also include your units.

Putting it all back together, you end up with 3 x 10⁻² g/mL

If you want to check you math, convert both numbers to regular numbers:

6 x 10⁻³  =  0.006  and   2 x 10⁻¹ = 0.2    and  0.006/0.2 = 0.03

in scientific notation 0.03 is  3 x 10⁻²

Answer:

7x-2(3-4)-2

Pls help

Explanation:

The number of mole in 1.06×10²³  atoms of tungsten is 0.176 mole

The following data were obtained from the question:

The number of mole that contains 1.06×10²³  atoms of tungsten can be obtained as illustrated below:

From Avogadro's hypothesis,

6.022×10²³ atoms = 1 mole of substance

Thus, we can say that

6.022×10²³ atoms = 1 mole of tungsten

Therefore,

1.06×10²³  atoms = (1.06×10²³  atoms × 1 mole) / 6.022×10²³  atoms

1.06×10²³  atoms = 0.176 mole of tungsten

Thus, we can conclude from the above calculation that the number of mole is 0.176 mole

Learn more about mole:

https://brainly.com/question/13314627

#SPJ1

Answer:

pH = 2.46

Explanation:

Hello there!

In this case, since this neutralization reaction may be assumed to occur in a 1:1 mole ratio between the base and the strong acid, it is possible to write the following moles and volume-concentrations relationship for the equivalence point:

\(n_{acid}=n_{base}=n_{salt}\)

Whereas the moles of the salt are computed as shown below:

\(n_{salt}=0.021L*0.68mol/L=0.01428mol\)

So we can divide those moles by the total volume (0.021L+0.0066L=0.0276L) to obtain the concentration of the final salt:

\([salt]=0.01428mol/0.0276L=0.517M\)

Now, we need to keep in mind that this is an acidic salt since the base is weak and the acid strong, so the determinant ionization is:

\(C_6H_5NH_3^++H_2O\rightleftharpoons C_6H_5NH_2+H_3O^+\)

Whose equilibrium expression is:

\(Ka=\frac{[C_6H_5NH_2][H_3O^+]}{C_6H_5NH_3^+}\)

Now, since the Kb of C6H5NH2 is 4.3 x 10^-10, its Ka is 2.326x10^-5 (Kw/Kb), we can also write:

\(2.326x10^{-5}=\frac{x^2}{0.517M}\)

Whereas x is:

\(x=\sqrt{0.517*2.326x10^{-5}}\\\\x=3.47x10^-3\)

Which also equals the concentration of hydrogen ions; therefore, the pH at the equivalence point is:

\(pH=-log(3.47x10^{-3})\\\\pH=2.46\)

Regards!

Answer: \(y = \frac{1}{4}x-3\)

Explanation:

To find the inverse of an equation, follow these steps:

We are given the equation \(f(x) = 4x + 12\) , so replace f(x) with x.

Then, replace x with y.

Your new equation:

\(x = 4y + 12\)

Now, solve for y:

\(x = 4y + 12\\\\4y = x - 12\\\\y = \frac{1}{4}x-3\)

This equation is the inverse of f(x), or g(x).

Answer:

Pumps also called transporters, are transmembrane proteins that actively move ions and/or solutes against a concentration or electrochemical gradient across biological membranes.

When fossil fuels burn, several forms of energy are produced, including:

Heat energy: The primary form of energy released during fossil fuel combustion is heat. Fossil fuels contain chemical energy stored for millions of years, and when they burn, this energy is released in the form of heat. The heat energy can be harnessed for various purposes, such as heating buildings or generating steam to drive turbines.

Light energy: Burning fossil fuels can also produce light energy in the form of flames or glowing embers. This light energy is a byproduct of combustion.

Mechanical energy: Heat generated by burning fossil fuels can be converted into mechanical energy. This is typically achieved by using heat to produce steam, which drives a turbine connected to a generator. The rotating turbine converts the heat energy into mechanical energy, which is further transformed into electrical energy.

Electrical energy: Through the process described above, burning fossil fuels can ultimately generate electrical energy. The mechanical energy produced by the turbine is converted into electrical energy by the generator. Electrical energy can power various devices, appliances, industries, and infrastructure.

It's critical to note that while burning fossil fuels can produce useful forms of energy, it also results in the release of carbon dioxide and other greenhouse gases. This contributes to climate change and environmental concerns. As a result, there is a global shift towards cleaner and renewable energy sources to mitigate these negative impacts.

Explanation:

According to the problem, hydrochloric acid will react with oxygen gas to produce water and chlorine gas.

hydrochloric acid + oxygen gas ----> water + chlorine gas

The balanced equation will be:

4 HCl + O₂ -----> 2 H₂O + 2 Cl₂

If we pay attention to the coefficients of the reaction we will see that 4 moles of HCl will react with 1 mol of O₂ to produce 2 moles of H₂O and 2 moles of Cl₂. So, 1 mol of O₂ will produce 2 moles of H₂O. The molar ratio between O₂ and H₂O is 1 to 2.

1 mol of O₂ : 2 moles of H₂O molar ratio

We can use this relationship to find the number of moles of H₂O that are produced from 5.52 moles of O₂.

moles of H₂O = 5.52 moles of O₂ * 2 moles of H₂O/(1 mol of O₂)

moles of H₂O = 11.0 moles

Answer: 11.0 moles of water are produced from 5.52 moles of oxygen gas.

The volume the balloon will occupy at an altitude where the pressure is 0.600 atm and the temperature is -20.00 C is 6.15 L.

The ideal gas law can be used to solve the given problem, which is as follows:P1V1/T1 = P2V2/T2 Where:P1 is the initial pressure (1.00 atm)P2 is the final pressure (0.600 atm)V1 is the initial volume (4.50 L)V2 is the final volume (what we want to find)T1 is the initial temperature (20.00 C = 293.15 K)T2 is the final temperature (-20.00 C = 253.15 K)The problem does not provide the mass or number of moles of helium gas, but these quantities are not required to solve the problem as they cancel out in the calculation.The problem also does not mention any change in altitude, so we can assume that the balloon rises to an altitude where the pressure and temperature are lower.We can rearrange the equation above to solve for V2, which gives:V2 = (P1V1T2)/(P2T1) Substituting the given values gives:V2 = (1.00 atm × 4.50 L × 253.15 K)/(0.600 atm × 293.15 K)V2 = 6.15 L.

for such more questions on volume

https://brainly.com/question/29796637

#SPJ8

Given :

Mass of caffeine at dangerous level , m = 3 g .

Coffee contains , 21.5 mg/oz OF caffeine .

Mass of cup , 8 oz/cup .

To Find :

Number of cups till dangerous level .

Solution :

Caffeine in a cup of coffee is given by :

\(C=(21.5\ mg/oz)\times (8\ oz/cup)\\\\C=172\ mg/cup\\\\C=0.172\ g/cup\)

Now , number of cups at the dangerous level is given by :

\(n=\dfrac{3\ g}{0.172\ g/cup}\\\\n=17.44\ cups\)

Now , number of cups should be integer .

Therefore , 18 cups of coffee per day is dangerous .

On the periodic table of the elements, mercury (Hg) has an atomic number of 80 and a mass number of 200.59. It has seven stable isotopes. The most abundant of these probably have more than 80 neutrons each

Isotopes are atoms with the same number of protons or atomic umber, but differing numbers of neutrons. They differ in mass, which affects their physical characteristics even if they have nearly identical chemical properties.

There is no elemental decay in stable isotopes. In contrast, unstable radioactive isotopes, like 14C, will decay into other elements.

Since number of proton and neutron makes the mass number which is 200.59. and number of proton is already 80 hence number of neutron should be above 80 to meet up with the 200.59

Learn more about mass number at:

https://brainly.com/question/28409714

#SPJ1

The theoretical percent of water in K₂SO₄.10H₂O is 10.338%.

The theoretical percent or percent composition of a molecule in a compound is the molecular mass of that molecule present in the 100 g mass of the compound.

1 mole of K₂SO4.10H₂O contains 1 mole of  K₂SO₄ and 10 moles of H₂O.

The molecular mass of K₂SO₄= 174.259 g mol⁻¹

The molecular mass of H₂O= 18.015 g mol⁻¹

Total mass of K₂SO4.10H₂O= 192.274 g

This means that 100 g of K₂SO₄.10H₂O will contain

100 g K₂SO₄ x 10 x 18.015 g H₂O / 174.259 g K₂SO₄ = 10.338 g H₂O

Therefore, the theoretical percent or percent composition of water in K₂SO₄.10H₂0 is equal to 10.338 %.

To know more about percent composition, refer:

https://brainly.com/question/16825568?referrer=searchResults

Answer:

I believe its Alkaline Earth Metals or Meterials

Explanation:

The temperature of the gas in Kelvin, after its volume is reduced to 2,450 mL, is approximately 143.27 K.

To determine the temperature of the gas in Kelvin after its volume is reduced, we can use the combined gas law, which relates the initial and final conditions of pressure, volume, and temperature for a given amount of gas.

The combined gas law equation is:

(P₁ * V₁) / T₁ = (P₂ * V₂) / T₂

Where P₁ and P₂ are the initial and final pressures, V₁ and V₂ are the initial and final volumes, T₁ is the initial temperature in Kelvin, and T₂ is the final temperature in Kelvin.

Given that the initial volume V₁ is 3,480 mL, the initial temperature T₁ is -70.0 °C (which needs to be converted to Kelvin), and the final volume V₂ is 2,450 mL, we can substitute these values into the equation.

To convert -70.0 °C to Kelvin, we add 273.15 to it, resulting in T₁ = 203.15 K.

Now we can solve for T₂:

(T₂ * V₁) / T₁ = V₂

T₂ = (V₂ * T₁) / V₁ = (2,450 mL * 203.15 K) / 3,480 mL

Simplifying the equation, we find:

T₂ ≈ 143.27 K

Therefore, the temperature of the gas in Kelvin, after its volume is reduced to 2,450 mL, is approximately 143.27 K.

For more question on temperature

https://brainly.com/question/4735135

#SPJ8

Answer:

Yes it is B,D.

Explanation:

Each box represents an element and contains its atomic number, symbol, average atomic mass, and (sometimes) name. The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.

while zinc is an important mineral with numerous functions in the body, it is not true that grains are the most reliable food source of zinc. A balanced diet that includes a variety of foods can provide adequate zinc intake for most people.

How to solve the problem?

The statement that is NOT true of zinc is "Grains are the most reliable food sources of zinc." While grains can be a source of zinc, they are not necessarily the most reliable source.

Zinc is an essential mineral that plays important roles in many biological processes, including immune function, protein synthesis, wound healing, and DNA synthesis. It is involved in various enzymatic reactions, and acts as a cofactor for many enzymes. Zinc is also important for proper growth and development, especially during childhood and adolescence.

Excess zinc intake can lead to decreased copper absorption, as both minerals compete for absorption in the intestines. This can lead to copper deficiency, which can cause anemia neutropenia, and other health problems. Therefore, it is important to maintain a balance between zinc and copper intake.

While grains can be a source of zinc, other foods such as meat, seafood, and dairy products are also good sources. Vegetarians and vegans may need to pay particular attention to their zinc intake, as plant-based sources of zinc may be less bioavailable than -based sources. Zinc supplements can also be used to prevent or treat deficiencies, but should be used with caution as excessive intake can have negative health effects.

In summary, while zinc is an important mineral with numerous functions in the body, it is not true that grains are the most reliable food source of zinc. A balanced diet that includes a variety of foods can provide adequate zinc intake for most people.

To know more about enzymes visit :-

https://brainly.com/question/14577353

#SPJ1

Answer:

The answer will be 29.4˚C.

Explanation:

Using the formula 5(˚F-32)/9, plug in the numbers and you'll get 29.4˚C.

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 1000 × 5

We have the final answer as

Hope this helps you

Answer:

5OOON

Explanation:

IM SMARTTT

Answer:

If there are more products than reactants, that means the reaction has shifted towards the left, which is the backward direction. If there are more reactants than products, that means the reaction has shifted towards the right, which is the forward direction.

The theoretical yield of the reaction is 1.13 g. The acid is the limiting reactant.

In a given chemical reaction, the theoretical yield can only be obtained from the balanced reaction equation. We have been given the balanced reaction equation in the question so we can work from there.

Number of moles of Cr =  0.50 g /52 g/mol = 9.6 * 10^-3 moles

Number of moles of acid =  0.75 g/98 g/mol = 7.7 * 10^-3 moles

Given that the reaction is 1:1, the limiting reactant would be the acid.

The theoretical yield is obtained from;

Number of moles of product * molar mass of product

We substitute to obtain;

7.7 * 10^-3 moles * 147 g/mole (since the reaction is 1:1)

= 1.13 g

Learn more about theoretical yield:https://brainly.com/question/14966377

#SPJ1

The rate constant for the reaction is either 7.14×10−3 s−1 or 2.50×10−3 s−1, depending on which rate was used to calculate it.

The rate of the reaction is given by the equation:

Rate = -k[A]

where k is the rate constant and [A] is the concentration of the reactant.

Rate at t=140 s:

Rate = (8.00×10−2 M - 0 M) / (140 s - 0 s)

= 5.71×10−4 M/s

Rate at t=400 s:

Rate = (4.00×10−2 M - 0 M) / (400 s - 0 s)

= 1.00×10−4 M/s

Since this is a zero-order reaction, the rate of the reaction is constant, and we can use either rate to calculate the rate constant:

k = Rate / [A]

Using the rate at t=140 s:

k = 5.71×10−4 M/s / 8.00×10−2 M = 7.14×10−3 s−1

Using the rate at t=400 s:

k = 1.00×10−4 M/s / 4.00×10−2 M

= 2.50×10−3 s−1

The rate constant for the reaction is either 7.14×10−3 s−1 or 2.50×10−3 s−1.

Learn more on zero-order reaction https://brainly.com/question/21663229

#SPJ1

wavelength of  (λmax) for Cu(NH3)4 2+ is less than  λmax for Cu(H2O)6 2+

Gamma rays have incredibly short wavelengths that are only a small percentage of the size of atoms, but other wavelengths can stretch as far as the cosmos since the connection between wave frequency and wavelength is inverse. Although it isn't often stated explicitly, electromagnetic radiation's wavelengths are typically represented in terms of the vacuum wavelength, regardless of the medium they are traveling through.

Electromagnetic radiation's behavior is influenced by its wavelength. wavelength x frequency equals the speed of light. Energy equals Planck's constant times frequency. Wave number in cm equals 1/wavelength. A rough estimate of the wavelength size is shown along with the wavelengths of several regions of the electromagnetic spectrum.

To know more about  wavelength visit : brainly.com/question/12924624

#SPJ9

Explanation:

1.undetectable to electromagnetic waves

2.hiding an object from an illumination containing diffre t wave lengths become difficult as the object sizes grow.

3. reduce the scattering by two orders.

Electromagnetic waves are unable to detect it. With increasing item sizes, it becomes more challenging to conceal an object from an illumination with various wave lengths. two orders down on the scattering.

Current clocking technology is defined as a hypothetical or made-up stealth technology that makes things like people or spaceships completely or partially invisible to certain electromagnetic (EM) spectrum wavelengths. In a specific frequency band, this gadget renders an object "invisible" to electromagnetic radiation. Obviously, cloaks that operate in the visible spectrum have the most fascinating potential uses.

These metamaterials, according to the researchers, can shield a medium-sized antenna from radio waves over a wide range of bandwidths, resulting in clearer communications. However, as visible light wavelengths are far shorter than radio waves, it is practically difficult to conceal huge things from them, such as the human body. The issue with present designs is that they can only handle a certain amount of bandwidth. Even this "perfect" 3D cloak that was previously exhibited could only conceal items from microwaves.

Thus, electromagnetic waves are unable to detect it. With increasing item sizes, it becomes more challenging to conceal an object from an illumination with various wave lengths. two orders down on the scattering.

To learn more about current cloaking technology, refer to the link below:

https://brainly.com/question/10964418

#SPJ5

4.29 g, or % of the reaction's yield. Yield in synthesis reaction percent: 85%. Explanation: C2H5OH+3O22CO2+3H2O is the balanced equation.

Multiply the molal mass of water by the number of moles. 2 + 16 = 18 g/mol is the molar mass. This yields 0.834 moles H2O x 18 g/mol when multiplied by the end result. 15 grams of water equal one gram of H2. For this experiment, 15 grams of water should be produced theoretically.

The percentage and theoretical yield are multiplied together to arrive at the simple calculation for actual yield.

To know more about synthesis reaction visit :-

https://brainly.com/question/24936069

#SPJ1

Answer:

Explanation:

As a result, the reaction of propane (C H) 3 8 and oxygen should produce carbon dioxide, water, and heat as products, and the balanced chemical equation will be: C H3 8 + 5O2 3CO2 + 4H O2 + heat. Reactants have the next highest potential power level when compared to materials.

Answer:

water and carbon dioxide

Explanation:

Propane undergoes combustion reactions in a similar fashion to other alkanes. In the presence of excess oxygen, propane burns to form water and carbon dioxide.

I hope this helps!

Dr. Trane's explanation is based on the psychodynamic perspective while Dr. Uni's explanation is based on the behavoiural perspective. The correct option is option C.

Psychodynamic perspective is a psychological approach that focuses on the unconscious mind and how it affects the behavior. According to the psychodynamic perspective, unconscious urges and conflicts that have their roots in early experiences shape how people behave. This approach is developed by Sigmund Freud.

Behavioral perspective

This is the psychological approach that focuses on observable behavior and the influence of the environment on an individual's actions. According to behaviorists, who also emphasize the significance of understanding and influencing behavior without probing interior mental processes, behavior is learnt through interactions with the environment. The early behaviourists are J.F Skinner, John B. Watson and Ivan Pavlov.

These perspectives are parts of psychoanalysis.

Learn more about psychoanalysis here

https://brainly.com/question/17752893

#SPJ1

Answer:

9 : 8

Explanation:

Aluminum oxide has the following formula Al₂O₃.

Next, we shall determine the mass of Al and O₂ in Al₂O₃. This can be obtained as follow:

Mass of Al in Al₂O₃ = 2 × 27 = 54 g

Mass of O₂ in Al₂O₃ = 3 × 16 = 48 g

Finally, we shall determine the mass ratio of Al and O₂. This can be obtained as follow:

Mass of Al = 54 g

Mass of O₂ = 48 g

Mass of Al : Mass of O₂ = 54 : 48

Mass of Al : Mass of O₂ = 54 / 48

Mass of Al : Mass of O₂ = 9 / 8

Mass of Al : Mass of O₂ = 9 : 8

Therefore, the mass ratio of Al and O₂ in Al₂O₃ is 9 : 8