PLEASE HELP!! All my points!!

Create a sale pitch poster about Solar energy with all of the needs in the instructions ( pros and cons list does not matter.

Answer:

true

Explanation:

Answer:

When carbon is burned in air, it forms carbon dioxide gas and releases a large amount of heat and some light:

C+O2= CO2+ heat+ light

Answer:

When carbon is burned in air, it forms carbon dioxide gas and releases a large amount of heat and some light:

C+O2= CO2+ heat+ light

Explanation:

The reaction of (R)-1-bromo-4-methylhexane with sodium cyanide (NaCN) in the presence of a polar aprotic solvent such as DMSO or DMF is a nucleophilic substitution reaction, known as a S**N2 reaction.

The nucleophile (CN-) attacks the carbon atom bearing the leaving group (Br-) from the backside, leading to inversion of stereochemistry at the stereocenter. The reaction can be represented as follows:

(R)-1-bromo-4-methylhexane + NaCN → (S)-4-methylhexanenitrile + NaBr

The major product formed is (S)-4-methylhexanenitrile, where the nitrile functional group (-CN) has replaced the bromine atom.

To know more about stereochemistry refer here

brainly.com/question/13266152#

#SPJ11

Answer:

The answer would be 2,838,240,000

Explanation: In 1 year there are 31,536,000 and if you multiply that number by 90 you would get 2,838,240,000

Answer:

2838240000

Explanation:

1 calendar year =

31536000

X 90

=

2838240000

It is important to use series of boilers in the extraction of sucrose from sugarcane because it saves excess fuel costs and helps in the generation of electricity.

This is referred to as a separation technique which involves the removal of a substance from another such as stone from a solution etc.

In the case of the  extraction of sucrose from sugarcane, series of boilers are used and has its advantages such as saving excess fuel costs. It also helps in the generation of electricity which is therefore the reason why it was chosen as the correct choice.

Read more about Extraction here https://brainly.com/question/982069

#SPJ1

Several methods are used to reduce nitrogen oxide (NOx) emissions, including: Installation of catalytic converters, Increased temperature of combustion.

A) Installation of catalytic converters: Catalytic converters use a catalyst to promote chemical reactions that convert NOx into nitrogen and oxygen, reducing emissions.

B) Increased temperature of combustion: NOx is formed at high temperatures during combustion, so reducing the temperature of combustion can reduce NOx emissions.

C) The addition of oxygen to combustion processes: Adding excess oxygen to the combustion process can reduce NOx emissions.

D) The use of fluidized bed combustion: Fluidized bed combustion is a combustion process in which fuel is burned in a bed of hot, moving particles, which can reduce NOx emissions compared to other combustion processes.

E) The use of calcium carbonate to absorb emissions: Calcium carbonate can be used to absorb NOx emissions from flue gases, reducing the amount of NOx released into the atmosphere.

In summary, multiple methods are used to reduce NOx emissions, including the installation of catalytic converters, reducing the temperature of combustion, adding excess oxygen to the combustion process, using fluidized bed combustion, and using calcium carbonate to absorb emissions.

Learn more about nitrogen oxide:

brainly.com/question/28884437

#SPJ4

Which method is used to reduce nitrogen oxide emissions?

A) Installation of catalytic converters

B) Increased temperature of combustion

C) The addition of oxygen to combustion processes

D) The use of fluidized bed combustion

E) The use of calcium carbonate to absorb emissions

The mechanism of the glyceraldehyde-3-phosphate dehydrogenase does not involve a covalent intermediate. The correct option is C.

Glyceraldehyde-3-phosphate dehydrogenase is the enzyme that is involved in the glycolytic pathway and it will converts the glucose into the pyruvate. The conversion of the glyceraldehyde-3-phosphate (G3P) into the 1,3-bisphosphoglycerate (1,3-BPG) and will coupled with the reduction of the NAD+ to NADH. The mechanism of the GAPDH involves the several steps, but it will not involve the phosphorylation of the substrate using the ATP.

The enzyme uses the covalent intermediate to the transfer the hydride ion from the G3P to the NAD+, forming the NADH. The option C is correct.

To learn more about phosphorylation here

https://brainly.com/question/14258447

#SPJ4

Answer:

The number of atoms in 11.5 g of sodium is 0.501 x 6.022 x 10^23 atoms/mol = 3.015 x 10^23 atoms.

Explanation:

To calculate the number of atoms in a given mass of a substance, you first need to know the atomic mass of the element in question. The atomic mass of sodium is 22.99 g/mol. This means that 11.5 g of sodium contains 11.5 / 22.99 = 0.501 mol of sodium atoms.

Since the atomic mass of sodium is known, we can now use the formula for the number of atoms, which is given by Avogadro's number. Avogadro's number is a constant that represents the number of atoms in one mole of a substance, and it has a value of 6.022 x 10^23 atoms/mol.

Therefore, the number of atoms in 11.5 g of sodium is 0.501 x 6.022 x 10^23 atoms/mol = 3.015 x 10^23 atoms.

Answer: 3.011 * 10^23 atoms

Explanation:

Molar mass of Na=23g/mol

no. of moles = weight/molar mass

n = 11.5/23

no. of moles = 0.5

no. of moles = no. of atoms/avogadro’s number

0.5 = no. of atoms/6.022*10^23

0.5*6.022*10^23 atoms = no. of atoms

3.011*10^23 atoms.

So there are 3.011*10^23 atoms present in 11.5g of sodium sample.

Hope this helps!!! :)

5 micrograms then 5 milligrams than 5 g then 5 kg

Ion-dipole and hydrogen bonding are the intermolecular interactions involved in the formation of a KBr solution in water.

Hydrogen bonding is a type of attractive interaction between a hydrogen atom that is covalently bonded to an electronegative atom (such as nitrogen, oxygen, or fluorine) and an electronegative atom in another molecule or ion. This bond is much stronger than a typical van der Waals interaction and results in a higher boiling and melting point for compounds that can hydrogen bond.

While H2O is a polar molecule with a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom, KBr is an ionic compound made up of K+ ions and Br- ions. The negative O- atoms of H2O and the positive K+ ions form the ion-dipole force. Hydrogen bonding occurs between the hydrogen atoms of H2O and the negative Br- ions. These pressures aid in the homogenous solution formation as KBr is dissolved in water.

Learn more about intermolecular interactions:

brainly.com/question/29690903

#SPJ4

The correct designation for the stereocenter carbon atom in the molecule is s configuration.

The correct designation for the stereocenter carbon atom in the molecule is s configuration. A central carbon has a dashed bond pointing up to a methyl group, a wedged bond pointing to the right to an aldehyde, a dashed bond pointing down to a hydroxy group and a wedged bond pointing to the left to a hydrogen. The stereochemistry of it is s configuration and it is pointing in upward direction. The stereo center of carbon atom rotates in two ways and its dash pointing in upward direction and wedge pointing in downward direction.

Learn more about Stereochemistry:

brainly.com/question/13266152

#SPJ4

Answer:

11.9 g S

General Formulas and Concepts:

Chem

Explanation:

Step 1: Define

2.23 × 10²³ atoms S

Step 2: Define conversions

Avogadro's Number

Molar Mass of S - 32.07 g/mol

Step 3: Dimensional Analysis

\(2.23 \cdot 10^{23} \ atoms \ S(\frac{1 \ mol \ S}{6.022 \cdot 10^{23} \ atoms \ S} )(\frac{32.07 \ g \ S}{1 \ mol \ S} )\) = 11.8758 g S

Step 4: Check

We are given 3 sig figs. Follow sig fig rules.

11.8758 g S ≈ 11.9 g S

Approximately 2.13 grams of NaHCO3 and 2.13 grams of CH2COOH would be required to inflate the bag with 65.1L of CO2 gas, considering the given information about the density of CO2 and the balanced chemical equation.

To calculate the amount of NaHCO3 (sodium bicarbonate) and CH2COOH (acetic acid) needed to inflate the bag with 65.1L of CO2 gas, we first need to find the density of CO2. The given information states that the density of CO2 is 1.57 times that of N2 gas, which has a density of 0.916 g/L.To find the density of CO2, we can multiply the density of N2 by 1.57:Density of CO2 = 0.916 g/L * 1.57 = 1.439 g/L

Now, we can proceed to calculate the grams of NaHCO3 and CH2COOH needed. The balanced chemical equation provided suggests that the reaction between NaHCO3 (sodium bicarbonate) and CH2COOH (acetic acid) produces CH3COONa (sodium acetate), H2O (water), and CO2 (carbon dioxide).

Since the volume of CO2 is given (65.1L), and we now know the density of CO2 (1.439 g/L), we can calculate the mass of CO2:

Mass of CO2 = Density of CO2 * Volume of CO2 = 1.439 g/L * 65.1 L = 93.8789 g

The molar mass of CO2 is 44.01 g/mol, which means the moles of CO2 can be calculated as:

Moles of CO2 = Mass of CO2 / Molar mass of CO2 = 93.8789 g / 44.01 g/mol ≈ 2.13 molNow, referring to the balanced chemical equation, we can see that 1 mol of NaHCO3 reacts to produce 1 mol of CO2. Therefore, the grams of NaHCO3 needed would be equal to the moles of CO2:

rams of NaHCO3 = Moles of CO2 ≈ 2.13 gSimilarly, the stoichiometry of the equation tells us that 1 mol of CH2COOH reacts to produce 1 mol of CO2. Thus, the grams of CH2COOH needed would also be approximately 2.13 g.

For more such questions on chemical reaction

https://brainly.com/question/26694427

#SPJ8

Answer:

True i think.

Explanation:

Answer:

D) Water

Explanation:

The solute is dissolved in the solvent. The solvent is normally the liquid in a solid-liquid solution.

Something that helps me remember this is that in salt water... salt is the solute. They both have a t. That is probably dumb but it helps me lol

but yeah... the answer is D) water

Answer:

water

Explanation:

study island

Answer:

Mira la explicación.

Explanation:

¡Hola!

En este caso, podemos encontrar facilmente el grupo al que pertenecen dichos elementos con números atómicos 8, 36 y 39 respectivamente mediante su búsqueda en la tabla periódica. Así, z=8 corresponde a oxígeno, z=36 a kriptón y z=39 a itrio.

Por otro lado, para saber el número de capas, debemos desarrollar la configuración electrónica para cada uno:

\(O: 1s^2,2s^2,2p^4\\Kr: 1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^{10},4p^6\\Y:1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^{10},4p^6,5s^2,4d^1\)

Con esto, vemos que oxígeno tiene dos capas, kripton cuatro capas e iritrio cinco, a lo que a oxígeno le faltan dos electrones para llenar dicha capa, a kripton ninguno y a iritrio nueve.

Saludos.

1. Structures of SCN- ion

The structure of the SCN- ion is as follows: The Sulfur atom has two double bonds with nitrogen and one lone pair.

It has a negative charge. The nitrogen atom is in a similar position, with a double bond to sulfur and a single bond to carbon.

The carbon atom has a triple bond to nitrogen and a single bond to sulfur. The formal charge on the carbon atom in SCN- ion is zero. The formal charges on the Nitrogen and Sulfur atoms are -1. Therefore, this structure is the most likely resonance structure. 2. Structures of POF3 ion

The structure of the POF3 ion is as follows: Phosphorous is the central atom, which has a single bond with each fluorine atom and a double bond with the oxygen atom. The formal charge on each fluorine atom is -1. The formal charge on the oxygen atom is zero. The formal charge on the phosphorus atom is +2. The POF3 structure with formal charges is as follows:

Therefore, this structure is the most likely resonance structure.

learn more about resonance here

https://brainly.com/question/11331041

#SPJ11

Answer:

is a way of presenting information about the chemical proportions of atoms

Explanation:

The hh genotype gives rise to the Bombay phenotype.

The Bombay phenotype, also known as the hh phenotype, is a genetic condition that results from a specific combination of alleles at the H blood group locus. People with the Bombay phenotype have a genotype of hh, meaning they do not produce the H antigen on their red blood cells. This can have significant implications for blood transfusions, as the lack of H antigen on the surface of red blood cells can cause a potentially life-threatening reaction when transfused with blood from someone who is an H antigen secreter (i.e., has an HH or Hh genotype).

Therefore, the hh genotype gives rise to the Bombay phenotype, characterized by the absence of the H antigen on red blood cells.

To learn more about genotype visit here:

https://brainly.com/question/12116830

#SPJ11

Mass of SnF₂ produced : 35.634 g

Reaction

Sn+2HF⇒SnF₂+H₂

mol Sn (Ar 118.710 g/mol) :

\(\tt \dfrac{45}{118.710}=0.379\)

mol SnF₂ = mol Sn = 0.379

mass SnF₂ (MW=156.69 g/mol) :

\(\tt 0.379\times 156.69=59.39~g\)⇒theoretical

\(\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\60\%=\dfrac{actual}{59.39}\times 100\%\\\\actual=0.6\times 59.39=35.634~g\)

E(r) = 8π * [(-r^3/a_0^3 + 3r^2/a_0^2 - 6r/a_0 + 6) * exp(-r/a_0)] This is the expression for the expectation value of the radial distance of the electron in the 1s state of hydrogen.

To find the expectation value of the radial distance of the electron for the 1s state of hydrogen (H), we need to calculate the integral of the radial distance multiplied by the probability density function over all space.

In the case of the 1s state of hydrogen, the radial wavefunction is given by:

R(r) = (2/a_0^3/2) * exp(-r/a_0)

Where a_0 is the Bohr radius.

To calculate the expectation value, we need to integrate the radial distance r multiplied by the square of the radial wavefunction |R(r)|^2 over all space.

E(r) = ∫ (r * |R(r)|^2) * 4πr^2 dr

Since the 1s orbital is spherically symmetric, we integrate over all space from 0 to infinity.

To simplify the calculation, we can substitute u = r/a_0:

E(u) = ∫ (u * |R(u * a_0)|^2) * 4π(a_0^3) du

Now, substituting the radial wavefunction R(u * a_0):

E(u) = ∫ (u * (2/a_0^3/2) * exp(-u)) * 4π(a_0^3) du

Simplifying further:

E(u) = 8π ∫ u^3 * exp(-u) du

This integral can be solved using integration by parts. Let's denote I(n) as the integral of u^n * exp(-u) du. We can then express I(n) in terms of I(n-1):

I(n) = -u^n * exp(-u) + n * I(n-1)

Using this relation, we can calculate E(u):

E(u) = 8π * [ -u^3 * exp(-u) + 3 * (-u^2 * exp(-u) + 2 * (-u * exp(-u) + I(0)))]

Simplifying further:

E(u) = 8π * [-u^3 * exp(-u) + 3 * (-u^2 * exp(-u) + 2 * (-u * exp(-u) + exp(-u)))]

E(u) = 8π * [(-u^3 + 3u^2 - 6u + 6) * exp(-u)]

Finally, substituting u = r/a_0 back into the equation, we obtain the expectation value of the radial distance for the 1s state of hydrogen:

E(r) = 8π * [(-r^3/a_0^3 + 3r^2/a_0^2 - 6r/a_0 + 6) * exp(-r/a_0)]

This is the expression for the expectation value of the radial distance of the electron in the 1s state of hydrogen.

To know more about  radial wavefunction,  visit:

https://brainly.com/question/30509565

#SPJ11

Answer:

22

Explanation:

22

Answer:

Explanation:

Molecular weight of Al: 27

Molecular weight of O: 16

Percentage composition of Al by weight in Al2O3

= (27*2) / (27*2 + 16*3)

= 0.5294

In 200 grams of Al2O3, there are

= 200*0.5294

= 105.88 grams of Al

77.18 grams of Al was produced in the experiment.

Percent yield for the experiment

= product mass / reactant mass * 100%

= 77.18 / 105.88 * 100%

= 72.89%

Free energy change for transporting Ca2+ ions is calculated as follows:∆G = RT ln ([Ca2+]outside/[Ca2+]inside)∆G = 8.315 J/mol.K x 310 K x ln (25 mM/145 mM) = -15,400 J/mol.

Here, ∆G is negative, which implies that Ca2+ ions transport spontaneously from the cell to blood. This is because the free energy of the system decreases when Ca2+ ions move from high concentration to low concentration. Therefore, transporting Ca2+ ions is energetically favorable.

To know more about calculated visit:

https://brainly.com/question/30781060

#SPJ11

Explanation:

\(molar \: mass \: of \: iron = 56 \: g \\ 56 \: g\: are \: weighed \: by \: 1 \: mole \: of \: iron \\ 595 \: g \: will \: be \: weighed \: by \: ( \frac{595}{56} ) \: moles \\ = 10.625 \: moles \: of \: iron \\ from \: equation : \\ 1 \: mole \: of \: iron \: is \: formed \: by \: 1 \: mole \: of \: hydrogen \\ 10.625 \: moles \: will \: be \: produced \: by \: (10.625 \times 1) \: moles \\ = 10.625 \: moles \: of \: hydrogen \\ at \: s.t.p : \\ 1 \: mole \: = \: 22.4 \: litres \\ 10.625 \: moles \: = (22.4 \times 10.625) \\ = 238 \: litres \\ \\ or \: at \: r.t.p : \\ 1 \: mole \: = 24 \: litres \\ 10.625 \: moles \: = \: (10.625 \times 24) \\ = 255 \: litres\)

Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

Consider the model of a sodium atom. An orange circle labeled upper n a is surrounded by three concentric circles. The innermost ring has dots at the north and south positions. The next ring has eight dots, evenly spaced, with dots aligning with those in the inner ring. The outermost ring has one dot at the north position. The distribution of electrons in different shells feature does the model show accurately.

Using the atomic number of each element, we may depict its atomic structure. Therefore, you must first know the atomic number of sodium in order to depict its atomic structure.

The sodium atom has a number of 11. Any element's atomic number describes how many electrons are present in one of its atoms.

Always start your sentence with the element's atomic number. Knowing an object's atomic number also lets you know how many protons and electrons it contains. The number of protons and electrons is the same as it is in every stable atom. Consequently, you are also aware of the quantity of electrons.

Learn more about sodium atom:

https://brainly.com/question/25033306

#SPJ4

The complete question is ''Consider the model of a sodium atom. An orange circle labeled upper N a is surrounded by three concentric circles. The innermost ring has dots at the north and south positions. The next ring has eight dots, evenly spaced, with dots aligning with those in the inner ring. The outermost ring has one dot at the north position. Which feature does the model show accurately?

A) the size of the electrons in different shells

B) the shapes of the orbitals in different shells

C)the distribution of electrons in different shells

D)the orientation of the orbitals in different shells

0.667 moles of O₂ are required to completely consume 10 g of sucrose in this reaction.

The balanced chemical equation for the reaction of sucrose (C₁₂H₂₂O₁₁) with oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O) is:

C₁₂H₂₂O₁₁ + 12O₂ → 12CO₂ + 11H₂O

From the equation, we can see that 12 moles of O₂ are required to react with 1 mole of sucrose. Therefore, to react with 10 g (0.0556 moles) of sucrose, we would need:

12 moles O₂/1 mole sucrose x 0.0556 moles sucrose = 0.667 moles O₂

The balanced chemical equation provides us with the stoichiometry of the reaction, allowing us to determine the mole ratio of reactants and products. In this case, we can see that for every 1 mole of sucrose, 12 moles of oxygen are required to completely react with it.

To determine the number of moles of oxygen required to react with 10 g of sucrose, we first need to calculate the number of moles of sucrose present in 10 g. This is done by dividing the mass of sucrose by its molar mass:

Molar mass of sucrose (C₁₂H₂₂O₁₁) = 342.3 g/mol

Number of moles of sucrose = 10 g / 342.3 g/mol = 0.0556 moles

We can then use the mole ratio from the balanced chemical equation to calculate the number of moles of oxygen required.

learn more about Moles here:

https://brainly.com/question/28239680

#SPJ11

There are total three laws of newtons, first law of newtons, second law of newton and third law of newton. Therefore, for every action there is an equal and opposite reaction.

Newton's first law is also called law of inertia. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

Third law of newton states  that for every action there is an equal and opposite reaction.

Therefore, for every action there is an equal and opposite reaction.

To know more about  newton's law, here:

https://brainly.com/question/29768600

#SPJ1