When a hydrocarbon burns in air what component of air reacts?

To identify a Lewis acid and base in a reaction, we might want to consider the steps below: :

In any chemical reaction, a Lewis acid is described a specie that can accept a pair of electrons, while a Lewis base is a species that can donate a pair of electrons.

In conclusion, in order  to identify a Lewis acid and base in a reaction, we will need to identify the species that can accept or donate a pair of electrons and go ahead to determine which one is the electron-pair donor and acceptor.

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False.Sulfur, phosphorus, and magnesium are essential minerals for the body, but they are not typically classified as major minerals.

Major minerals, also known as macro minerals, are required by the body in relatively large amounts, typically exceeding 100 milligrams per day. Examples of major minerals include calcium, sodium, potassium, chloride, and magnesium.

Sulfur and phosphorus are important minerals, but they are generally classified as trace minerals or minor minerals. They are needed in smaller quantities compared to major minerals.

Magnesium, on the other hand, is considered an essential mineral, but it is classified as a major mineral. It plays a crucial role in various bodily functions, including nerve and muscle function, maintaining healthy bones, and supporting energy metabolism.

So, the correct statement would be: Sulfur and phosphorus are not considered major minerals, but magnesium is considered a major mineral.

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As KNO2 is the only basic salt among the given choices.Out of the options given, only option b. NH4Cl is a basic salt.

The correct answer is option c,

Among the given options, the basic salt is c. KNO2 (potassium nitrite). Basic salts are formed from the reaction of a strong base and a weak acid. In this case, KNO2 is produced from the reaction between a strong base KOH (potassium hydroxide) and a weak acid HNO2 (nitrous acid).

Option a, NaCl (sodium chloride), is a neutral salt formed from a strong acid (HCl, hydrochloric acid) and a strong base (NaOH, sodium hydroxide). Option b, NH4Cl (ammonium chloride), is an acidic salt derived from a weak base (NH4OH, ammonium hydroxide) and a strong acid (HCl, hydrochloric acid).

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The relative humidity at the compressor outlet is about 122

The psychrometric chart, which shows the properties of moist air. The chart is based on the relationships between temperature, pressure, and specific humidity, which is the mass of water vapor in a unit mass of dry air.

Using the given data, we can find the initial properties of the air from the chart:

At 100 kPa and 20°C, the specific humidity of the air is about 0.009 kg/kg.

At 90% relative humidity, the dew point temperature of the air is about 18°C.

Next, we can use the isentropic compression process to find the final properties of the air:

Since the compression is isentropic, the entropy of the air remains constant during the process.

From the definition of entropy, we know that the entropy of the air is proportional to its specific volume raised to the power of the specific heat ratio k.

Therefore, if we know the specific volume of the air at the initial and final states, we can use the specific heat ratio to find the ratio of the specific volumes.

From the tables, we can find that the specific volume of the air at 100 kPa and 20°C is about 0.877 m3/kg.

To find the specific volume at 880 kPa, we can use the ideal gas law with a constant specific heat:

v2 = (R T2) / P2

= (R T1) / (P1 (P2 / P1)^(1/k))

= v1 / (P2 / P1)^(1/k)

where

R = 287 J/kg-K is the gas constant for air

T1 = 20°C + 273.15 = 293.15 K is the initial temperature

P1 = 100 kPa is the initial pressure

P2 = 880 kPa is the final pressure

k = 1.4 is the specific heat ratio

v1 = 0.877 m3/kg is the initial specific volume

Plugging in the numbers, we get:

v2 = 0.877 / (880 / 100)^(1/1.4)

= 0.240 m3/kg

Now we can use the chart again to find the final properties of the air:

At 880 kPa and 20°C, the specific volume of the air is about 0.240 m3/kg.

We can follow the constant-enthalpy line on the chart from the initial state until we reach the final specific volume.

The intersection of the constant-enthalpy line and the final specific volume line gives us the final state of the air.

We can read off the final specific humidity and dew point temperature from the chart.

Using the chart, we find that the final specific humidity is about 0.028 kg/kg, and the dew point temperature is about 29°C.

Finally, we can use the definition of relative humidity to find the relative humidity at the compressor outlet:

RH2 = (W2 / Ws(T2)) * 100%

where

W2 = 0.028 kg/kg is the final specific humidity

Ws(T2) = 0.023 kg/kg is the saturation specific humidity at 29°C

RH2 = ? is the relative humidity at the compressor outlet

Plugging in the numbers, we get:

RH2 = (0.028 / 0.023) * 100%

= 121.7%

Therefore, the relative humidity at the compressor outlet is about 122

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The relative humidity at the exit is approximately 8%.

To solve this problem, we need to use the psychrometric chart, which provides information about the properties of moist air. First, we locate the initial conditions of the air on the chart, which corresponds to a point with a temperature of 20°C, a pressure of 100 kPa, and a relative humidity of 90%. Then, we draw a straight line on the chart to represent the isentropic compression process to a final pressure of 880 kPa. Finally, we locate the final state of the air on the chart, which corresponds to a point with a temperature of approximately 118°C and a relative humidity of approximately 8%.

The decrease in relative humidity is due to the fact that as the air is compressed, its temperature increases, and its absolute humidity (mass of water vapor per unit volume of air) remains constant, which leads to a decrease in the relative humidity (ratio of the mass of water vapor in the air to the maximum mass of water vapor that the air can hold at that temperature and pressure).

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1.the smallest things that can carry out life proccess

Answer:

\(2.89 \times {10}^{20} \: \: molecules\)

Explanation:

The number of molecules of KCN can be found by using the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 0.00048 × 6.02 × 10²³

We have the final answer as

\(2.89 \times {10}^{20} \: \: \: molecules\)

Hope this helps you

The redox reaction must occur between an oxidizing agent and a reducing agent.

From your question, you want  me to give you a general idea about redox reaction and that is what I will do. Firstly, a redox reaction is one in which one specie is oxidized and the other is reduced. The both processes have to occur simultaneously.

When we say that the both processes occur simultaneously, we mean that the electron that is lost in one process is gained in another process and all these must happen within the same system not apart from each other.

The oxidation number of one specie increases while the oxidation number of the other specie decreases. Hence, an redox reaction must occur between an oxidizing agent and a reducing agent.

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Answer:

the material has two different color crystals

Explanation:

There are two types of mixture, one is homogeneous mixture and other is heterogeneous mixture. Therefore, If the material has two different color crystals, then we can see  whether material is a pure substance or a mixture.

When two or more compounds are combined but each ingredient retains its chemical identity, the result is referred to as a mixture. In other words, there is no chemical interaction between the parts of a combination.

According to how consistent they are and how well the components' particle sizes match up, mixtures are categorized. If the material has two different color crystals, then we can see  whether material is a pure substance or a mixture.

Therefore, if the material has two different color crystals, then we can see  whether material is a pure substance or a mixture.

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If 5.0 kJ of energy is transferred to a 15.5 g sample of water initially at a temperature of 10.0 degrees Celsius, the final temperature of the water will be roughly 87.11 degrees Celsius.

To determine the final temperature of water after adding 5.0 kJ of energy to a 15.5 g sample at 10.0 degrees Celsius, we can use the specific heat capacity equation:

q = mcΔT

Where:

q is the heat energy absorbed or released,

m is the mass of the substance,

c is the specific heat capacity, and

ΔT is the change in temperature.

First, let's calculate the heat energy absorbed by the water:

q = 5.0 kJ = 5.0 × 10³ J

Next, we need to determine the specific heat capacity of water. The specific heat capacity of water is approximately 4.18 J/g°C.

Substituting the known values into the equation:

5.0 × 10³ J = (15.5 g) × (4.18 J/g°C) × ΔT

Simplifying the equation:

ΔT = (5.0 × 10³ J) / (15.5 g × 4.18 J/g°C)

ΔT ≈ 77.11°C

To find the final temperature, we add the change in temperature to the initial temperature:

Final temperature = Initial temperature + ΔT

Final temperature = 10.0°C + 77.11°C

Final temperature ≈ 87.11°C

Therefore, the water's final temperature will be approximately 87.11 degrees Celsius.

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Answer:

mole of solute(mol)÷liters of solutions (l)

Answer:

How does an organisms DNA determine it's chances of survival:

Organisms with heritable (genetically determined) features that help them survive and reproduce in a particular environment tend to leave more offspring than their peers. If this continues over generations, the heritable features that aid survival and reproduction will become more and more common in the population

How does humans manipulate DNA of organisms to be benefit themselves:

Biotechnology is the use of biological techniques and engineered organisms to make products or plants and animals that have desired traits.

The survival of an organism can be determined from its DNA, by checking any chances of mutation in its genetic codes. Humans manipulate DNA of organisms to create traits of greater survival and desired characteristics.

DNA or deoxyribose nucleic acid is a genetic material in all living bodies and are considered to be the building blocks of life. Genes are the basic of life and each genes are coded in a specific manner in each organisms.

The gene sequence have to be perfect in organism to make it the fittest to survive. The DNA sequence of different organism can be studies and any mutation that is wrong sequencing can be identified.

If any mutation is present, the organism cannot survive.  DNA of one organism can be inserted into other one to get the characteristics of the first one through advanced research designs.

Therefore, humans manipulate DNAs of various organisms to change study how to change the characteristics and to get it in a desired way.

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The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:

Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)

= 144.12 + 22.22 + 176.00

= 342.34 g/mol

Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:

Number of moles of Kool Aid powder = Mass / Molar mass

= 4.25 g / 342.34 g/mol

≈ 0.0124 mol

Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:

Number of moles of sugar = Mass / Molar mass

= 192.00 g / 342.34 g/mol

≈ 0.5612 mol

Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:

Volume of water = 2.00 quarts * (1.06 liters / 1 quart)

= 2.12 liters

To find the molarity, we use the formula:

Molarity (M) = Number of moles / Volume (in liters)

Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L

≈ 0.286 M

To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.

Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:

(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:

(C M)(V mL) = (0.286 M)(65 mL)

V mL = (0.286 M)(65 mL) / C M

So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

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Taking into account the reaction stoichiometry, 11.2 grams of BaSO₄ are produced from 10 g of barium chloride.

In first place, the balanced reaction is:

BaCl₂ + H₂SO₄ → BaSO₄ + 2 HCl

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 208.24 grams of BaCl₂ form 233.34 grams of BaSO₄, 10 grams of BaCl₂ form how much mass of BaSO₄?

mass of BaSO₄= (10 grams of BaCl₂× 233.34 grams of BaSO₄) ÷208.24 grams of BaCl₂

mass of BaSO₄= 11.2 grams

Finally, 11.2 grams of BaSO₄ are formed.

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Answer: I believe you are talking about the world's first recorded nuclear explosion that took place on the plains of the Jornada del Muerto Dessert.

Explanation: It is to be noted that the Trinity site is still considered to be radioactive, and Trinitite which is a green glass-like substance is found abundantly in the area. Trinity was an atmospheric test conducted by the U.S. Army on July 16th of 1945. The site was chosen because of its isolated, flat grounded, non-windy lands. This experiment was so tightly gatekept that not even the military policemen whom rode with it knew of its contents.

The frequency of the photon that causes a transition from the n=4 state to the n=6 state in a hydrogen atom is determined by the difference in energy between the two states.

When an electron transitions between different energy levels in a hydrogen atom, it emits or absorbs photons with specific frequencies. The energy of a photon is directly proportional to its frequency, as described by the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency.

In this case, the transition is from the n=4 state to the n=6 state. The energy levels in a hydrogen atom are given by the equation E = -13.6 eV/n^2, where n represents the principal quantum number. Plugging in the values for the two states, we find that the energy difference between them is:

ΔE = E(n=6) - E(n=4)

   = (-13.6 eV/6^2) - (-13.6 eV/4^2)

   = -13.6 eV(1/36 - 1/16)

   = -13.6 eV(4 - 9)/144

   = -13.6 eV(-5)/144

   = 13.6 eV(5)/144

Now, to determine the frequency of the photon, we can convert the energy difference to joules using the conversion factor 1 eV = 1.6 x 10^-19 J:

ΔE (J) = (13.6 eV(5)/144)(1.6 x 10^-19 J/eV)

       = (13.6 x 5 x 1.6 x 10^-19) / 144 J

Finally, we can calculate the frequency of the photon using the equation E = hf:

f = ΔE (J) / h

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Answer:

B and C

Explanation:

is it multiple choice question??

Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.

Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.

An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.

The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.

Therefore, the size and the electron increase the Van der Waals force.

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Taking into account the reaction stoichiometry, 5.66 grams of H₂O are produced when 25 grams of water are formed.

In first place, the balanced reaction is:

Cu(OH)₂ → CuO + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: If by stoichiometry of the reaction 79.55 grams of CuO are formed together with 18 grams of H₂O, 25 grams of CuO are formed together with how much mass of H₂O?

\(mass of H_{2} O=\frac{25 grams of CuOx18 grams of H_{2} O}{79.55 grams of CuO}\)

mass of H₂O= 5.66 grams

Finally, 5.66 grams of H₂O are produced when 25 grams of water are formed.

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Answer:

Alkalai B

Explanation:

B because its a weak alkali ie baking soda ph 8.3(sodium bicarbonate)which is used as a remeady of heartburns and stomach acids.

Food group has the largest carbon footprint and requires the most water to produce is bovine meat

The carbon footprint is the total amount of greenhouse gases that are generated by our action and the average carbon footprint for a person in the united state is 16 tons and one of the highest rates in the world and globally the average carbon footprint is closer to 14 tons and beef has the highest carbon footprint of any food and this is because of what is required to raise and farm cattle and animals used for beef production require a tremendous amount of feed and which must be grown on its own and they also produce an extremely high amount of methane and meat as well as cheese and eggs have the highest carbon footprint and in the fruits, vegetables as well as beans and nuts have much lower carbon footprint

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Answer:

Fe (s) + Cu^2+ (aq) + SO4^2- (aq) --> Cu (s) + Fe^2+ (aq) + SO4^2- (aq)

Explanation:

Answer:

1.2 mL

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated:

HCl + KOH —> KCl + H₂O

From the balanced equation,

Mole ratio of the acid, HCl (nₐ) = 1

Mole ratio of base, KOH (n₆) = 1

Finally, we shall determine the volume of the base, KOH needed to neutralize the acid, HCl as follow:

Molarity of base, KOH (M₆) = 0.997 M

Volume of acid, HCl (Vₐ) = 30 mL

Molarity of acid, HCl (Mₐ) = 0.0400 M

Volume of base, KOH (V₆) =?

MₐVₐ / M₆V₆ = nₐ/n₆

0.04 × 30 / 0.997 × V₆ = 1/1

1.2 / 0.997 × V₆ = 1

Cross multiply

0.997 × V₆ = 1.2

Divide both side by 0.997

V₆ = 1.2 / 0.997

V₆ = 1.2 mL

Thus, the volume of the base, KOH needed to neutralize the acid is 1.2 mL.

Answer:

c,b not sure,c,v,b hope it will help u

The element likely to have the ground-state electron configuration [Kr]5s14d10 is Ag (Silver).

The electron configuration [Kr]5s14d10 corresponds to the filling of the 5s, 4d, and 4p orbitals in an atom. To determine the element with this electron configuration, we need to identify which element has the atomic number corresponding to the electron configuration.

The atomic number of Ag (Silver) is 47. When we fill the electrons based on the periodic table, the noble gas before element 47 is krypton (Kr), which has the electron configuration [Kr]4d105s2. The electron configuration [Kr]5s14d10 indicates that the 5s and 4d orbitals are fully filled, suggesting that the element is silver (Ag).

The other options, Au (Gold), In (Indium), Cd (Cadmium), and Cu (Copper), do not have the electron configuration [Kr]5s14d10. Au has the electron configuration [Xe]6s15d10, In has [Kr]5s24d105p1, Cd has [Kr]5s24d10, and Cu has [Ar]4s13d10.

Therefore, based on the electron configuration provided, the element likely to have the ground-state electron configuration [Kr]5s14d10 is Ag (Silver).

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The empirical formula represents the simplest whole number ratio of atoms in a compound. To identify the empirical formula, we need information about the composition of the compound in terms of the elements present. Among the given answer choices, the correct empirical formula is B. b4h10, representing the compound boron tetraboride.

To determine the empirical formula, we consider the ratios of the different elements present in the compound. Let's evaluate the answer choices:

A. b2cl2: This represents a compound with boron (B) and chlorine (Cl). The ratio of boron to chlorine is 2:2, simplifying to 1:1. The empirical formula for this compound would be BCl.

B. b4h10: This compound consists of boron (B) and hydrogen (H). The ratio of boron to hydrogen is 4:10, which simplifies to 2:5. Thus, the empirical formula for this compound is B2H5.

C. na2po4: This compound includes sodium (Na), phosphorus (P), and oxygen (O). The ratio of sodium to phosphorus to oxygen is 2:1:4, which is already in its simplest form. Therefore, the empirical formula for this compound is Na2PO4.

D. al2cl6: This compound contains aluminum (Al) and chlorine (Cl). The ratio of aluminum to chlorine is 2:6, which simplifies to 1:3. Hence, the empirical formula for this compound is AlCl3.

Among the given answer choices, the compound with the empirical formula B2H5 is the correct option.

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Answer:

94,200 milligrams in 94.2 grams

To get answer multiply 94.2 by 1000.

Answer:

there is 94,200 milligrams in 94.2 grams

Explanation:

hope this helps, because 1,000 milligram is 1 gram

so 1,000x94.2(grams)=94,200

HOPE THIS HELPS A LITTLE

The atomic mass comes from isotopes on the periodic table.

Answer:

A. 10

Explanation:

M = n : v (L)

M = 1 × 10^-10 : 1

M = 10^-10

HCl => H^+ + Cl^-

then, the a = 1 ( The amount of Hydrogen ions released during the ionization process)

[H^+] = a × Ma

[H^+] = 1 × 10^-10

[H^+] = 10^-10

pH = -log [H^+]

pH = -log 10^-10

pH = -(-10 × 1)

pH = 10

Well, the pH is 10.

Answer:

Cesium. Full electron configuration of cesium: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s1. xenon ← cesium → barium

Explanation:

most include 36. :-]