Add curved arrows(s) to show the resonance using the following pattern: a lone pair (on nitrogen) next to a pi bond. Modify the second structure given to draw the new resonance structure. Include lone pairs and charges in your structure. Using the + and - tools to add charges to an atom, and use the single bond tool to add/remove double bonds.

A "fuzzy cloud" around the nucleus of an atom where an electron is likely to be found will be called an orbital. Option A.

Orbitals are regions within the atom where electrons can be found.

A typical electron contains electrons that are negatively charged, protons that are positively charged, and neutrons that have no charges.

The positively charged protons and neutral neutrons form the core or the nucleus of the atom. The electrons, on the other hand, are located outside the nucleus.

The regions where electrons of atoms are located are collectively called orbitals.

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The amount, in mL, of the suspension that should be given to an infant weighing 17 lb will be 1.16 mL

0.8 mL of the liquid contains 80.0 mg of the drug.

The recommended dose is 15 mg per kg of body weight

The infant to be given the drug weighs 17 lb.

First, let's convert the weight of the infant to kg.

1 lb = 453.59 g

17 lb =       453.59 x 17/1

                   = 7711.03 g

1000 g = 1 kg

7711.03 g = 7711.03 x 1/1000

               = 7.711 kg

So, the baby's weight is 7.711 kg.

The drug dose for the baby can thus be calculated as:

15 mg x 7.711 = 115.67 mg

But 0.8 mL of the drug contains only 80.0 mg. How many mL will contain 115.67 mg?

                   0.8 x 115.67/ 80.0 = 1.16 mL

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Formal charge = number of valence electron - 1/2 bonded electron - lone pair electron

a. N3 =  number of valence electron - 1/2 bonded electron - lone pair e-

    = 5 - 2/4 - 4

    = -1

b. CO = number of valence electron - 1/2 bonded electron - lone pair e-

         Charge on carbon

       =  4 - 2 - 6/2

        = -1

charge on oxygen

number of valence electron - 1/2 bonded electron - lone pair e-

= 6 - 2 - 6/2

  = +1

c. NO3

by making structure we found that each oxygen has different charge in this compound.

O = -1, -1 , 0

N = 0

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Mole of the gas should be removed to get a volume of 2.56ml is 10.26 mol.

Given data,

Volume₁ = 5.32ml

number of moles at 5.32ml n₁ = 24.37mol

Molarity = ?

Volume₂ = 2.56ml

number of moles = ?

First to find molarity of gas using formula,

M = nV

where,

M is molarity

n is numbers of mole

V is volume

So, putting the values of volume₁,

M = 24.37mol x 5.32ml

M = 129.65 mol/ml

So again to get moles of second volume in same formula we have,

M = nV

So,

n = M / V

n₂ = 129.65 / 2.56ml

n = 50.64mol

So,

n₂ - n₁ = 50.64mol - 24.37mol

n = 26.27

So,

mole of the gas removed = 26.27 / 2.56

mole of the gas removed = 10.26mol

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Answer:

Do a quick conversion: 1 moles Aluminium Sulfate = 342.150876 gram using the molecular weight calculator and the molar mass of Al2(SO4)3.

Explanation:

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The majority of elements are found in mixtures of two or more isotopes in nature. Every element's isotope has a set mass and a natural percent abundance. These isotopes' masses in their respective abundances must be reflected in the element's mass.

These are the reasons for different values of weighted average atomic mass.

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Answer:

243.60 miles

Explanation:

Multiply miles per gallon times number of gallons.  Both starting numbers are given to two decimal places so our answer is as well.

Answer:

The nucleus contains two types of subatomic particles, protons and neutrons. The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus. The electrons have a negative electrical charge.

In her experiment, she will have to deal with the following elements Amount of metal corrosion⇒  Airborne Salt Concentration⇒  Air Temperature.

Uniform corrosion, pitting, crevice corrosion, filiform corrosion, galvanic corrosion, environmental cracking, and fretting corrosion are just a few of the various types of corrosion that may be seen with the unaided eye. Let's examine how these types of corrosion develop and how carbon steel can be harmed by them.

When a metal reacts with something else, such oxygen, hydrogen, an electrical current, or even dirt and germs, it corrodes. When metals like steel are subjected to excessive strain, which causes the substance to split, corrosion can also occur.

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The complete question is -

Select the correct answer from each drop-down menu.

Madison lives near the ocean. She's formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. If Madison plans to test this hypothesis, she will have to deal with the following variables in her experiment:

Dependent variable: [AIR HUMIDITY/AIR TEMPERATURE/AMOUNT OF METAL CORROSION]

Independent variable: [AIRBORNE SALT CONCENTRATIONS/VOLUME OF OCEAN WATER/OCEAN WATER TEMPERATURE]

One possible confounding variable: [AIR TEMPERATURE/AIRBORNE SALT CONCENTRATIONS/COLOR OR NEARBY OCEAN WATERS]

Answer:

1 - Crime Scene Analysis

2 - Conducting Interviews

3 - Surveillance

4 - Interrogation

5 - Developing Other Sources of Information

Explanation:

1 - Judy and Nick investigate the limousine where the attack occurred, discovering polar bear fur.

2 - Judy and Nick interview the elephant Yoga Instructor (really the Yak) at the Mystic Spring Oasis.

3 - Judy and Nick watch Zootopia Traffic Network surveillance in the Assistant Mayor's Office to discover where the "Night Howlers" were going.

4 - Judy interrogates the weasel who stole the onions earlier in the movie with the help of Mr. Big threatening to ice him.

5 - Judy uses leverage to force Nick Wilde to help in the investigation. Nick provides another source of information with his connection to his friend Flash at the Department of Mammal Vehicles who runs their plate number.

*These Investigation Techniques are defined in the study "CRIMINAL INVESTIGATION TECHNIQUES" listed on the U.S. Department of Justice Office of Justice Programs website*

The equation MgO + 2HCl → MgCl₂ + H₂O is  a balanced equation.

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The balanced redox reaction between acidified potassium and iron two chloride is given as ,

5[tex]Fe^{+2}[/tex] + 1 [tex]MnO_{4} ^{- }[/tex] + 8 [tex]H^{+}[/tex]→ 5[tex]Fe^{+3}[/tex] ++ 1 [tex]Mn^{+2 }[/tex] + 4[tex]H_{2} O[/tex]

The reaction is spontaneous

Place these numbers as coefficients in front of the formulas containing those atoms.

[tex]Fe^{+2}[/tex] +  [tex]MnO_{4} ^{- }[/tex] → [tex]Fe^{+3}[/tex] + [tex]Mn^{+2 }[/tex]

Balance all remaining atoms other than H and O

[tex]Fe^{+2}[/tex] +  [tex]MnO_{4} ^{- }[/tex] → [tex]Fe^{+3}[/tex] + [tex]Mn^{+2 }[/tex]

Balance O.

Add enough H2O molecules to the deficient side to balance O.

We have 4O atoms on the left, so we need 4H2O

on the right.

5[tex]Fe^{+2}[/tex] + 1 [tex]MnO_{4} ^{- }[/tex] + 8 [tex]H^{+}[/tex]→ 5[tex]Fe^{+3}[/tex] + 1 [tex]Mn^{+2 }[/tex] + 4[tex]H_{2} O[/tex]

The reaction is spontaneous when the value of E ° for the reaction is positive .

E ° for  [tex]MnO_{4} ^{- }[/tex]/   [tex]Mn^{+2 }[/tex] = 1.74 V

E ° = [tex]Fe^{+3}[/tex]/ [tex]Fe^{+2}[/tex] = 0.75 V

E ° for reaction = 1.74 V -  0.75 V = 0.99 V

Hence , E ° for reaction is positive .

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The lines are violet and blue respectively.

We know that the energy of the photon could be obtained by the use of the equation;

E = hf

E = energy

h = Plank's constant

f = frequency

For the first line;

E = 6.6 * 10^-34 Js * 3.45 x 10^14 Hz = 2.3 * 10^-19 J

Given that;

E = hc/λ

λ = hc/E

λ = 6.6 * 10^-34 * 3 * 10^8/2.3 * 10^-19

λ = 8.61 * 10^-7 m or 861 nm

The color is violet

For the second line;

E = 6.6 * 10^-34 Js * 6.53 xx 10^14 Hz

E = 4.3 * 10^-19 J

E = hc/λ

λ = hc/E

λ =  6.6 * 10^-34 * 3 * 10^8/4.3 * 10^-19

λ = 4.60 * 10^- 7 m or 460 nm

The color is blue

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Answer:

I think it was when she caught him talking to his "child"

Increases in sewage waste were responsible for decreasing oxygen levels in the lake

Humans does have the impact on the environment in several ways. Common effects includes lowered water quality, elevated pollution and greenhouse gas emissions, depletion of natural resources and contribution to global climate change.

As global temperatures increasing , weather patterns on earth will dangererously change. While some areas will have longer growing seasons, others will become drought wastelands as water will decrease in vast areas, turning once floral regions into deserts. The elevation will impact weather patterns, provoking more intense hurricanes in both size and frequency, as well as intensifying and prolonging droughts and heat waves. But air pollution not only  just effect the environment . The evidence is increasing that poor air quality and rising temperatures are ruining delicate ecosystems, even led to increased asthma and cancer rates in humans.

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Answer:

23.1%

Explanation:

To find the weight percent (aka. mass percent), you need to use the following equation:

                                   mass of solute (g)
Weight Percent  =  ----------------------------------  x  100%
                                  mass of solution (g)

In this case, the solute is sugar and the solution is the sugar and water. You can find the weight percent by plugging the given values into the equation and solving. The final answer should have 3 sig figs like the given values.

mass of solute = 15.0 g

mass of solution = 15.0 g + 50.0 g = 65.0 g

                                   15.0 g solute
Weight Percent  =  -------------------------  x  100%
                                     65.0 g soln

Weight Percent  =  0.231  x  100%

Weight Percent  =  23.1%

If the statue has a volume of 4.9m^3 and the density of marble is 2.76g/cm^3 then, the mass of the statue is 0.563 kg.

ρ = m / V

where,

ρ =  density

m = mass

V = volume

As given in the equation,

ρ is 2.76g / cm³

V is 4.9m³

So by using the formula,

ρ = m / V

we have,

2.76g / cm³ = m / 4.9m³

m = 2.76 / 4.9

m = 0.563 kg

Volume is a measurement of the amount of three-dimensional space that is occupied. It is frequently numerical quantified using SI-derived units or various imperial units. The definition of length is linked to the definition of volume. In contrast, the mass and density formula is rho = m / V.

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Answer:

A

Explanation:

A rise in temperature means that there is more thermal energy which will be used in the reaction by the sugar/sucrose, that is why solubility increases with temperature increase

Answer: The solubility of a solid increases as the temperature increases.

Explanation: THE ANSWER!! okay everbody

The limiting reactant is iron ore, the theoretical yield of iron metal is 701.344 kg, and the theoretical yield of carbon dioxide is 413.292 kg.

From the equation of the reaction:

[tex]2 Fe_2O_3(s) + 3 C(s) --- > 4 Fe(s) + 3 CO_2(g)[/tex]

The mole ratio of iron ore to carbon is 2:3.

Mole of 1000 kg of iron ore = 1000000/159.69

                                          = 6,262 moles

Mole of 120 kg carbon = 120000/12

                                 = 10,000 moles

Thus, it appears that the carbon is in excess while the iron ore is limited in availability.

The mole ratio of the iron ore and the iron produced is 1:2. Thus, the equivalent number of moles of iron produced will be:

              6,262 x 2 = 12,524 moles

Mass of 12,524 moles of iron = 12,524 x 56

                                                = 701,344 g or 701.344 kg

Thus, the theoretical yield of iron is 701.344 kg.

The mole ratio of the iron ore and the carbon dioxide produced is 2:3. The equivalent mole of carbon dioxide produced will be:

         6,262 x 3/2 = 9,393 moles

Mass of 9,393 moles carbon dioxide = 9,393 x 44

                                                         = 413,292 or 413.292 kg

The theoretical yield of carbon dioxide is, therefore, 413.292 kg.

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The volume in milliliter of 7.44 g of acetone 9.4897 mL

It is necessary to understand a substance's mass, volume, and density in order to answer this question. By dividing a material's mass by volume, the density of the substance may be calculated. The equation for density may now be written in mathematical form using the expression for density, and the equation for mass can be produced by rearrangement using the equation for density as a starting point.

Mass of acetone = 7.44 g (given)

Volume of acetone (v) =  mass of acetone ÷ density of acetone

V = 7.44 g ÷ 0.784 g/mL

V = 9.4897 mL

Hence volume of acetone = 9.4897 mL

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The number of moles in each sample will be 0.391 moles, 30.7 moles, 0.456 moles, and 1350 moles

The number of moles of a substance is the ratio of the mass of the substance to the molar mass.

In other words; mole = mass/molar mass.

Thus:

                                   = 0.391 moles

                                         = 30.7 moles

                                          = 0.456 moles

                                                 = 1350 moles

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For 5.43 g/mL and 5.44 g/mL =  0.01 the least diff and most precise.

First of all, precision is determined by the difference in the two obtained values. If the difference between the two values obtained is less, then precision is more. If the difference between the two values obtained is more, then precision is less.

For 5.43 g/mL and 5.44 g/mL , we can see that the difference between these two data is 0.01

For 7.98 g/mL and 7.91 g/mL , we can see that the difference between these two data is 0.07

For 7.65 g/mL and 7.64 g/mL , we can see that the difference between these two data is 0.01

For 7.06 g/mL and 7.03 g/mL , we can see that the difference between these two data is 0.03

As we can see that, the most difference between the data is 0.07 between 7.65 g/mL and 7.64 g/mL and thus, they are least precise.

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The grams of iburofen does such a tablet contain 800 mg =   0.8g Ibuprofen

1 g = 10^-3g = .001g

Ibuprofen has  800 mg doses in over-the-counter analgesic

800g = 800 × .001

        = 0.8g

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Answer:

0.4773 moles Ca

Explanation:

To find the amount of moles, you need to multiply the mass (g) by the atomic mass of calcium. The atomic mass compares the mass of calcium per every one mole. It is important to arrange the ratio in a way that allows for the cancellation of units (grams should be in the denominator). The final answer should have 4 sig figs to match the given value.

Atomic Mass (Ca): 40.078 g/mol

 19.13 g Ca              1 mole
-------------------  x  -------------------  =  0.4773 moles Ca
                              40.078 g

One molecule of sucrose is burned with oxygen to make carbon dioxide and water.

Disaccharide sugar sucrose is composed of glucose and fructose. It is produced naturally by plants and is the main component of white sugar. C₁₂H₂₂O₁₁ is the chemical formula for it.

Extraction and refining sucrose for human use can be done from either sugarcane or sugar beet. Raw sugar is created from crushing the cane, which is consistently delivered to other sectors to be refined into pure sucrose. Sugar mills generally are located in the tropical regions near the sugarcane plantations.

                   C₁₂H₂₂O₁₁ + 12O₂  →  12CO₂ + 11H₂O

When one molecule of sucrose is burnt, we get 12 carbon dioxide molecules.

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Correct hypothesis is 'i will place three rats in three separate cages and

expose them to varying amounts of cigarette smoke'

Here given statement C is correct in hypothesis because when we place three rats in three separate cages and expose them to varying amounts of cigarette smoke then 50% rat are kill because nicotine concentration in the mainstream smoke particulate matter of reference cigarettes are 70%-8% and it take 20 min to kill the rats

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