A pecan tree produced 0. 0458 moles of carbon dioxide co2. How many grams of carbon dioxide were produced?.

Thick liquid layer that interacts with an inert carrier gas or mobile phase and is chemically linked to the inside of a capillary column

What is a chromatographic example?

Chromatography Methods

Some forms of liquid chromatography include high-performance liquid chromatography (HPLC), size exclusion chromatography, and supercritical fluid chromatography. Ion-exchange, resin, and paper chromatography are a few other varieties of chromatography.

What is the chromatography's fundamental tenet?

Chromatography is one more method for separating and analyzing chemical mixtures. The method is based on the interaction of polarity between the sample and two additional components, the solid (or stationary) phase, and the mobile phase, which can be either a liquid or a gas.

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The significance of gallium is explained below

The atomic number and symbol for the chemical element gallium are 31. The discovery was discovered in 1875 by French chemist Ga. Paul-Émile Lecoq de Boisbaudran. Gallium is a similar metal to the other elements in Group 13 of the Periodic Table (aluminium, indium, and thallium).

Under normal pressure and temperature, gallium is a soft and silvery element. When it's liquid, it takes on an icy white hue. Using too much force could cause gallium to shatter conchoidally. Since its discovery in 1875, gallium has been frequently used to produce alloys with low melting points. It is also used in semiconductors as a dopant on semiconductor substrates.

In 1875, a French chemist by the name of Paul Emile Francois Lecoq de Boisbaudran made a spectroscopic discovery of a new element while studying zinc blende. The properties of this freshly discovered element matched those of the eka-aluminum, which has an atomic weight of 69, as predicted by Mendeleev. The specific gravity of the element was later determined to be 5.9, as predicted by Mendeleev. The substance was then given the name gallium by Lepoq, who so elevated Mendeleev's periodic table and supported Mendeleev's theories.

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Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

d subshell letter corresponds to a 4-leaf clover orbital pattern.

d subshell  is more complex than s subshell and p subshell. s subshell has only one orbital, meaning it can contain only 2 electrons. It is sphere shaped. p subshell has three orbitals, meaning it can contain 2x3 = 6 electrons. It is dum-bell shaped. Whereas, d subshell has 5 orbitals, meaning that it can contain 2x5 = 10 electrons. It is double dum-bell shaped, which can otherwise, be also called clover leaf shaped. The positioning of the orbitals depends upon the axis of approach, depending on which there can be the following types of orbitals : dx-y , dy-z , dz-x and dz2. Out of these, dx-y , dy-z, dz-x and dx2-y2 are clearly clover shaped. Each orbital can accommodate 2 electrons. Therefore, these 5 orbitals of d subshell can accommodate total 10 electrons.

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Answer:

I believe it is E because the battery has a wire, a power source(the battery), and a bulb connected together thus making a full series circuit. Furthermore, the more batteries they are to a series circuit, the more dimmer the light bulbs will be.

Answer:

technology is a silent factor

Explanation:

learned about it in computer class.

The effect of errors on the calculated concentration of CI is significant.

A 10.00 mL diluted chloride sample was titrated with 0.02749 M AgNO3, and 16.51 mL AgNO, was required to reach the endpoint. The effect of errors on the calculated concentration of CI can be explained as follows:a. The student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M. If the student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M, then the experimentally calculated moles of Ag would be too high. Consequently, the calculated [CI] in the unknown would come out too low. b.

The student was past the endpoint of the titration when the final buret reading was taken. If the student was past the endpoint of the titration when the final buret reading was taken, then the experimentally determined moles of Ag would be too low. This would cause the calculated C1 concentration to come out too high. Consequently, the calculated moles of CI would come out too high. Therefore, the effect of errors on the calculated concentration of CI is significant.

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Elements can be arranged in order of increasing size by following the periodic table. The periodic table arranges elements in increasing atomic number, which generally correlates with increasing size. However, there are exceptions due to the presence of different electron configurations and the effects of nuclear charge.

To arrange elements in order of increasing size, you can follow these steps:

By following these steps, you can arrange elements in order of increasing size.

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Galaxies are the lump of matter. The shape of major galaxies is spiral shape. Thus, the given statement is false.

The galaxies are the lump of dust and mass, held together by the gravitational force. The galaxies are continuously moving in the universe.

The formation of galaxies is believed to be due to the force of attraction between the components.

The shape of major galaxies is assumed to be spiral-shaped, however, the irregular shape galaxies are also present.

Thus, the given statement about the shape of galaxies is false.

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The  1 mol methane produce is 801.6 kJ.

What is combustion?

Burning is also known as combustion. When a fuel is heated, it combines with oxygen to form combustion. The three components of combustion—fuel, heat, and oxygen—are summarized by the fire triangle. A fire extinguishes when one of them is taken away from it.

What is heat?

Heat is the exchange of "thermal" energy brought on by a difference in temperature. Consider an isolated system that was initially composed of two subsystems operating at two distinct temperatures. The higher temperature subsystem 2 transfers energy to the lower temperature subsystem 1, and vice versa.

Heat of combustion of methane

CH4 + 2 O2  --->    CO2 + 2 H2O

Heat of combustion is the heat produced per gram from a substance .

1 mol methane = (12+4)= 16 gram

16 gram methane produce the heat energy  =

(16 g  x 50.1 kJ /g ) = 16 x 50.1 kJ

1 mol methane produces  = 801.6 kJ

Or on  Round off numerical value = 802 kJ

Therefore, 1 mol methane produce is 801.6 kJ.

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Answer:

Water cooled down and contracted.

Explanation:

When water contracts, its volume decreases. When the volume of the water in the bottle system decreases, the water is pulled farther down the clear pipe.

Answer:

Explanation:

A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.

Answer:

Covalent bond

Explanation: Hydrogen and Oxygen are both non-metals, with a low difference in electronegativity. They will share electrons.

The concentration of the final solution after mixing water into the H₂SO₄ is 0.375 M.

Concentration in terms of molarity will be calculated by using the below formula as:

M₁V₁ = M₂V₂, where

M₁ = molarity of H₂SO₄ = 1.50 M

V₁ = volume of H₂SO₄ = 50 mL

M₂ = molarity of water = ?

V₂ = volume of water = 200 mL

On putting all values on the above equation, we get

M₂ = (1.50)(50) / (200) = 0.375 M

Hence option (2) is correct.

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Answer:

Explanation:

this is what the Lewis electron-dot diagram of a Cl2 molecule looks like

Lewis electron  diagram of a chlorine molecule is attached in the picture below.

Lewis dot structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .

They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.

They are capable of reflecting electronic structure of elements and even the pairing of electrons . In the diagram, each dot represents an electron while a pair of dots represent a bond between the atoms.They are useful in predicting the structure.

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Moving down a group or across a column or row in the modern periodic table, we can observe a lot of trends in the properties (physical and chemical) of elements in basic chemistry.

When two atoms are combined, then we can estimate their atomic size by checking the distance between the atoms.

            In general, the atomic radius decreases as we move from left to right in a period and it increases when we go down a group. This is because in periods the valence electrons are in the same outermost shell. The atomic number increases within the same period while moving from left to right which in turn increases the effective nuclear charge. The increase in attractive forces reduces the atomic radius of elements.

Potassium and Iron both are from period 4  group 1 and group 8 respectively and as we know when we go Left to right atomic size increase .  

Potassium come first and iron comes later in period 4 that's why atomic size of potassium is greater than that of iron despite of having 7 extra electron to iron.

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Answer: They can be apllied to the senario he can pettition or he can use bigger bags those are just a couple of ideas.

the nurse will administer approximately 1 teaspoon (tsp) of the medication.1 teaspoon (tsp) is approximately equal to 5 mL.

To determine the number of teaspoons the nurse should administer, we need to calculate the equivalent volume of 30 mEq of KCL using the provided concentration of 60 mEq/10 mL.

First, we'll find the ratio of milliequivalents (mEq) to milliliters (mL) in the given concentration:

60 mEq / 10 mL = 6 mEq/mL

Next, we can set up a proportion to find the volume (in mL) that corresponds to 30 mEq:

6 mEq/mL = 30 mEq / X mL

To solve for X, we can cross-multiply:

6X = 30 * 1

6X = 30

X = 30 / 6

X = 5 mL

Since the medication cup is marked in teaspoons, we need to convert 5 mL to teaspoons.

1 teaspoon (tsp) is approximately equal to 5 mL.

Therefore, the nurse will administer approximately 1 teaspoon (tsp) of the medication.

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Answer:

The molecular weight of CO is 28.01g/mole.

There are  Al2(SO4)3 =0.0423789650037307 mol in  14.5 g of aluminum sulfate.

In one mole of aluminum sulfate, Al2(SO4)3, there are two moles of aluminum, three moles of sulfur, and twelve moles of oxygen.

Al2 (SO4)3 is the chemical formula for aluminum sulfate. One mole of a material weighs one molar mass. Aluminum sulfate has a molar mass of 342.14 g/mole. Aluminum hydroxide, sulfuric acid, and water are combined to create aluminum sulfate. An aluminum sulfate hydrate is the result of the process.

Aluminium=26.981538

Oxygen=15.9994

Sulfur=32.065

Now Molecular weight calculation of aluminium sulphate:

26.981538*2 + (32.065 + 15.9994*4)*3=342.150876g)

Molar mass of Al2(SO4)3 = 342.150876 g/mol

‘.’ In 342.150876g =1 mol

.‘. in 1 gram=1/342.150876=0.00292

1 grams Al2(SO4)3 to mol = 0.00292 mol

Hence for 14.5 gram Al2(SO4)3 =0.0423789650037307 mol.

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Approximately 9.63 × 10^23 molecular orbitals will be formed by the combination of atomic orbitals in 3.20 mol of atoms.

When atomic orbitals combine, they form molecular orbitals. The number of molecular orbitals formed depends on the number of atomic orbitals participating in the combination.

For a given atom, each atomic orbital can hold a maximum of two electrons with opposite spins. In 3.20 mol of atoms, the number of atoms can be calculated using Avogadro's number, which is approximately 6.022 × 10^23 atoms/mol.

Assuming each atom contributes one atomic orbital, the total number of atomic orbitals in 3.20 mol of atoms would be 3.20 mol × (6.022 × 10^23 atoms/mol) = 1.926 × 10^24 atomic orbitals.

Since each molecular orbital can accommodate a maximum of two electrons, the number of molecular orbitals formed would be half of the number of atomic orbitals.

Therefore, in 3.20 mol of atoms, approximately 9.63 × 10^23 molecular orbitals would be formed by the combination of atomic orbitals.

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Answer:

papillae

Explanation:

Answer:

parti Ng dila sguro! hecdsjsjves

We have the balanced equation for the reaction.

To determine which is the limiting reactant we must know the moles of both reactants. We have the moles of Al equal to 3.8 mol. We calculate the moles of HCl with the data that they give us of molarity and volume in the following way:

Now, the ratio according to the HCl to Al reaction equation is 6/2=3/1.

The HCl to Al ratio that we have according to the available moles is: 10/3.8=2.63. This ratio is lower than the theoretical one, that is, there are not enough moles of HCl if all the moles of Al are to be reacted. Therefore, HCl is the limiting reactant.

The calculations are made according to the moles of HCl available. Now the ratio H2 to HCl is 3/6=1/2. So the moles of H2 will be:

The theoretical yield is 5.0molH2.

The answer is: 5.0 moles of H2, HCl being the LR. 4th option

Styrofoam is a recommended material to use when constructing a calorimeter because it is a good insulator.

Styrofoam, also known as expanded polystyrene foam, is a popular material used for various applications, including insulation. It is a good insulator due to its low thermal conductivity.

The structure of Styrofoam consists of trapped air pockets within its foam cells, which hinders the transfer of heat energy. This property makes it effective at reducing heat exchange between the inside and outside environments.

In the context of a calorimeter, where heat measurements are taken, using Styrofoam helps minimize heat loss or gain from the surroundings, allowing for more accurate measurements of thermal changes.

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The density of the liquid is 1.05 g/ml. To find the volume of 1.05 g of the liquid, we can use the formula:

Density = Mass / Volume

Solving for Volume, we get:

Volume = Mass / Density

Substituting the given values, we get:

Volume = 1.05 g / 1.05 g/ml

Volume = 1 ml

To convert ml to liters, we divide by 1000:

Volume = 1 ml / 1000

Volume = 0.001 L

Therefore, the volume of 1.05 g of this liquid is 0.001 liters.

To find the volume of 1.05 g of a liquid with a density of 1.05 g/mL, you can use the formula:

Volume = Mass / Density

Given:
Mass = 1.05 g
Density = 1.05 g/mL

Now, plug the values into the formula:

Volume = 1.05 g / 1.05 g/mL = 1 mL

Since 1 L equals 1000 mL, you'll need to convert the volume from mL to L:

Volume = 1 mL * (1 L / 1000 mL) = 0.001 L

So, the volume of 1.05 g of this liquid is 0.001 liters.

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Answer:

12.9L

Explanation:

V1 = 8.5L

P1 = 3.5

P2 = 2.3

V2 = ?

P1 V1 = P2 V2 ( Boyle's law )

3.5×8.5 = 2.3×V2

Divide both sides by 2.3

3.5×8.5/2.3 = 2.3×V2/2.3

V2 = 29.5/2.3

=12.9L

Answer:

A. The birthrate is higher than the death rate

Explanation:

Answer:

i) 24.305 u

iv) The number of protons determines an element's atomic number and is used to distinguish one element from another.

Answer:

1) 24

2)protons

Explanation:

1) magnesium Ar

2) atomic number

Balanced equation

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

From the question given above, the following data were obtained:

CaVa / CbVb = nA / nB

(0.2 × Va) / (0.1 × 50) = 1

(0.2 × Va / 5  = 1

Cross multiply

0.2 × Va  = 5

Divide both side by 0.2

Va = 5 / 0.2

Va = 25 mL (Option C)

Balanced equation

H₂SO₄+ 2NaOH —> Na₂SO₄ + 2H₂O

From the balanced equation above,

From the question given above, the following data were obtained:

CaVa / CbVb = nA / nB

(1.5 × 15) / (Cb × 40) = 1 / 2

22.5 / (Cb × 40) = 1 / 2

Cross multiply

Cb × 40 =  22.5 × 2

Divide both side by 40

Cb = (22.5 × 2) / 40

Cb = 1.13 M (Option A)

Balanced equation

HNO₃ + KOH —> KNO₃ + H₂O

From the balanced equation above,

From the question given above, the following data were obtained:

CaVa / CbVb = nA / nB

(Ca × 10) / (4.2×10¯³ × 71.4) = 1

(Ca × 10) / 0.29988 = 1

Cross multiply

Ca × 10 = 0.29988

Divide both side by 10

Ca = 0.29988 / 10

Ca = 3×10¯² M (Option B)

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Answer:

If there is a decrease in the volume there is less space for molecules to move and therefore they collide more often, increasing the pressure. If there is an increase in the volume the molecules have more space to move, collisions happen less often and the pressure is decreased.

Explanation:

If there is a decrease in the volume there is less space for molecules to move and therefore they collide more often, increasing the pressure. If there is an increase in the volume the molecules have more space to move, collisions happen less often and the pressure is decreased.