Which products would result from the double replacement reaction between MgCl₂ (aq) andNa₂CO3(aq)?ABNaCl (aq) and Me (CO3)₂(s)NaCl (aq) and Mg CO₂(x)Na Cl (aq) and MgCO, (s)NaCl (aq) and MęCO, (s)

Answer:

Heterogeneous mixture

Explanation:

Soil is composed of small pieces of a variety of materials, so it is a heterogeneous mixture.

Answer:

0.136g

Explanation:

A student dissolved 5.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the stock solution and then diluted it with water to give 275. mL of a final solution. How many grams of NO3- ion are there in the final solution?

\(Co(NO_3)_2(aq)\rightarrow Co^{2+}(aq)+2NO_3^{-}(aq)\)

Initial mole of Co(NO3)2  \(=\frac{mass}{molar mass}\)

\(=\frac{5.00}{182.94} \\\\=0.02733mol\)

Mole of Co(NO3)2 in final solution

\(=\frac{4.00}{100}\times 0.02733\\\\=0.04\times 0.02733\\\\= 0.001093mol\)

Mole of  NO3- in final solution = 2 x Mole of Co(NO3)2

\(=2\times 0.001093\\\\=0.002186mol\)

Mass of  NO3- in final solution is mole x Molar mass of NO3

\(=0.002186\times62.01\\\\=0.136g\)

The final solution contains 0.24 g of nitrate ion.

Number of moles of  Co(NO3)2 =  5.00 g/183 g/mol = 0.027 moles

Number of moles = concentration × volume

concentration = Number of moles /volume

Volume of solution = 100 mL or 0.1 L

concentration =  0.027 moles/0.1 L = 0.27 M

Using the dilution formula;

C1V1 = C2V2

C1 =  0.27 M

V1 = 4.00 mL

C2 = ?

V2 =  275. mL

C2 = C1V1/V2

C2 = 0.27 × 4.00/ 275

C2 = 0.0039 M

Number of moles of NO3- ion in Co(NO3)2 = 0.0039 M × 62 g/mol = 0.24 g

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The empirical formula tells us how many atoms of each element are in a molecule regardless of the structure of the molecule, that is, regardless of which element is bonded to which element or what type of bond there is. It is the simplest way to represent a molecule.

As far as I can see the molecule C6H12 is already represented by its empirical formula, so in this case, you don't have to use any formula. You know that there are 6 atoms of carbon and 12 atoms of hydrogen, that is the information that the empirical formula gives.

So, the empirical formula for C6H12 is C6H12

Answer:

Explanation:

To determine the mass of NaCl in 1.25L of 0.1035M solution, we can use the formula:

mass = concentration x volume x molar mass

where concentration is in molarity (M), volume is in liters (L), and molar mass is in grams per mole (g/mol).

The molar mass of NaCl is 58.44 g/mol.

Plugging in the given values, we get:

mass = (0.1035 M) x (1.25 L) x (58.44 g/mol)

mass = 7.3188 g

So, there is approximately 7.3188 grams of NaCl in 1.25L of 0.1035M solution.

Answer:

42.75 grams of SiCl2Br2 must be weighed out

Explanation:

Here is the complete question:

An experiment requires that enough SiCl2Br2 be used to yield 13.2g of bromine . How much SiCl2Br2 must be weighed out?

Explanation:

First, we will determine the Molar mass of SiCl2Br2,

Si = 28.08, Cl = 35.45, Br = 79.90

Molar mass of SiCl2Br2 = 28.08 + 35.45(2) + 79.90(2)

= 258.78

Hence, the molar mass of SiCl2Br2 is 258.78 g/mol

If 79.90 grams of bromine is present in 258.78 grams of SiCl2Br2

Then, 13.2 grams of bromine will be present in \(x\) grams of SiCl2Br2

\(x\) = (13.2× 258.78) / 79.90

\(x\) = 42.75 grams

Hence, 42.75 grams of SiCl2Br2 must be weighed out.

Answer:

Path length is the overall distance traveled following the path of where the object travel. ... Displacement is the distance from the starting point of the object to its final point irregardless where it travels.

Answer:

gas

Explanation:

solid molecules are close together

liquid molecules are close

gas molecules do not touch

Answer:

Confederation
☆

EDGE2022; Good Luck :3!!!!

The vapor pressure of the solution at 30°C is 0.9676781. The pressure that a vapor exerts on its condensed phases (solid or liquid) in a closed system at a specific temperature is known as vapor pressure.

The pressure of the solvent above the solution is known as the vapour pressure of a solution. Temperature, ambient pressure, and solute concentration all have an impact on a solution's vapour pressure. A manometer or a barometer can be used to determine a solution's vapour pressure. When a liquid is contained in a closed container, its molecules frequently crash into the walls of the container. Due to these collisions, the container's walls experience pressure equal to the liquid's vapour pressure.

Solution of P = (0.9677 x 31.8 mmHg)

P solution = 30.8 mmHg

X Solvent = 34.63588 mol/1.156 + 34.635

X Solvent = 0.9676781

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Answer: The mole percent of 1-methylcyclohexene was 80.21% and the mole percent of 3-methylcyclohexene was 19.79%. This is because 1-methylcyclohexene is the major product with the more stable carbocation intermediate and 3-methylcyclohexene is the minor product with the less stable carbocation intermediate.

Explanation: The mole percent of 1-methylcyclohexene was 80.21% and the mole percent of 3-methylcyclohexene was 19.79%

Answer:

840960 minutes in 1.6 years ...

Draw a structural formula for the major product of the reaction shown:

The structural formula for the major product (2-butene) of the given reaction is as follows:$$\ce{CH3CH2CH=CH2}$$

The given reaction is an acid-catalyzed dehydration reaction.

During the reaction, the hydroxyl group (OH) and the adjacent hydrogen atoms (H) on the reactant alcohol (2-butanol) undergo dehydration (loss of water) to form an alkene (2-butene) as the major product.

The reaction is shown below:$$\ce{CH3CH2CH2CH2OH + H2SO4 ->[\Delta] CH3CH2CH=CH2 + H2O}$$To draw the structural formula for the major product of the given reaction, we need to consider the following points:

1. The reactant alcohol (2-butanol) is a four-carbon alcohol with the hydroxyl group (OH) attached to the second carbon atom (C2) of the chain.

2. The product alkene (2-butene) will be a four-carbon alkene with a double bond between the second and third carbon atoms (C2 and C3) of the chain.

The other two carbon atoms will have a single bond with the adjacent carbon atoms and a hydrogen atom each attached to them.

3. The major product will be formed via the elimination of water (dehydration) between the hydroxyl group (OH) and the adjacent hydrogen atoms (H) on the second carbon atom (C2) of the reactant alcohol (2-butanol).

4. The acid catalyst (H2SO4) does not participate in the reaction and remains unchanged. It only facilitates the formation of the alkene by providing a proton (H+) to the hydroxyl group (OH) and a medium for the elimination of water.

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Answer:

Water sweated by water from the leaf cells evaporating into the air, which pulls water and nutrients from the leaf into the air.

Hi!

When the ocean reaches its saturation level of carbon dioxide, a couple of things will happen:

First, more carbon dioxide will remain in the atmosphere, and second, the ocean's pH will drop.

Carbonate and bicarbonate ions in seawater act as a buffer system which keeps the ocean's pH levels stable. When CO2 dissolves in seawater, it reacts with the ocean's buffer system in such a way that it produces two hydrogen ions, which lowers the pH. As more and more CO2 reacts with the ocean's buffer system and the system becomes saturated, less atmospheric carbon dioxide will cross over into the ocean. This excess CO2 will remain in the atmosphere and contribute to global climate change.

Hope this helped!

When the ocean reaches it's saturation level of carbon dioxide  more amount of carbon dioxide remains in the atmosphere and  pH of the ocean drops.

It is defined as the level or extent up-to which a substance is soluble in a particular solvent. Due to global warming ,there is an excessive release of carbon dioxide in atmosphere. The excessive amount cannot be soluble in the ocean water which leads to ocean acidification.

As a result of ocean acidification the pH of water in the ocean drops thus there is less amount of oxygen present for aquatic organisms which is needed to survive. When carbon dioxide dissolves in water it yields carbonic acid which further reduces the pH of water  and thus making it unfit for aquatic environment.

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Answer:

Explanation:

what?

Answer:

82gS

Explanation:

2 Fe  + 3 S  →  Fe2S3

          ↓      ↑  

       mol → mol

        Fe         S

\(\frac{95 g Fe }{} \frac{1 mol Fe }{55.85 g Fe } \frac{3 mol S }{2 mol Fe } \frac{32.07 g S}{1 mol S} = 82 g S\)

Answer:

Protein is a necessary ingredient that is important for numerous bodily functions, such as tissue growth and repair, hormone and enzyme production, and immune system maintenance. When humans eat protein, the amino acids that make up the protein are disassembled.

In the stomach, where it is combined with digestive enzymes and stomach acid, protein breakdown starts. The amino acids are separated from the protein bonds with the assistance of this combination. The small intestine then receives the resulting concoction of amino acids and peptides.

Additional digestive enzymes are released into the small intestine by the pancreas and the intestinal wall to further break down the protein into its component amino acids. The small intestine's inner wall then allows these amino acids to enter the circulation where they are then carried to various bodily cells.

Once inside the cells, amino acids can be digested to provide energy or utilised to create new proteins. To ensure that it has enough amino acids to meet its requirements, the body also controls the balance of amino acids in the bloodstream.

In conclusion, the breakdown and absorption of protein begins in the stomach when it is combined with digestive enzymes and stomach acid. Then, the process continues in the small intestine, where additional breakdown occurs, and ends with the absorption of individual amino acids into the bloodstream.

Desertification:Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid.

Deforestation: the action of clearing a wide area of trees.

Climate change: Climate change describes a change in the average conditions — such as temperature and rainfall — in a region over a long period of time. NASA scientists have observed Earth's surface is warming, and many of the warmest years on record have happened in the past 20 years.

Extinction:

the state or process of being or becoming extinct.

Answer:

Partial pressure of Neon is 373 mmHg

Explanation:

In a mixture of gases, the total pressure is equal to the sum of the partial pressures of each gas. In the problem:

Total Pressure = Partial Pressure Ne + Partial Pressure CO2 + Partial pressure O2 + Partial pressure H2

Replacing:

1245 mmHg = Partial pressure Ne + 145mmHg + 228mmHg + 499mmHg

Partial pressure Ne = 1245 - 145 - 228 - 499

Answer:

well mountain ranges form from earthquakes usually and earthquakes cause when tectonic plates are moved so just talk about how tectonic plates move and what they cause which would be earthquakes than earthquakes cause mountain ranges so just talk about that if you want me to answer it actually comment on my answer here and ill tell you.

Explanation:

hope this helps though.

Answer:

The bond-dissociation energy is one measure of the strength of a chemical bond A−B. It can be defined as the standard enthalpy change when A−B is cleaved by homolysis to give fragments A and B, which are usually radical species

The usual enthalpy change for the 200g/7.68 mol of ethyne reaction is C2H6g C2H2g Plus 2H2g - 2,388.5kJ.

The quantity of heat released or absorbed during a reaction occurring at constant pressure is known as the enthalpy change.

H stands for "enthalpy change," Hf for "system final enthalpy" (i.e., the enthalpy of the byproducts of the system in equilibrium in a chemical reaction), and Hi for "system initial enthalpy" (i.e., the entropy for the reactants in a chemical reaction).

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Answer:

The electronegative of two atoms are not equal.

Explanation:

Answer

Ozone occurs both in the Earth's upper atmosphere and at ground level. Ozone can be good or bad, depending on where it is found. Called stratospheric ozone, good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields us from the sun's harmful ultraviolet rays. On the other hand, tropospheric ozone artificialy occurs in the lower atmosphere, where it polluts the air and slowly warms the earth.

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The molar mass is 3230.8 g/mol

First, we need to know that the formula for the general gas law  is represented as;

PV = nRT

such that the parameters are;

Substitute the values

1 × 2.33 = n × 8.314 × 433.15

Multiply the values, we get;

n = 2.33/ 8.314 × 433.15

Divide the values

n = 6.5 × 10⁻⁴ moles

But, number of moles = mass/molar mass

Molar mass = 2.10/ 6.5 × 10⁻⁴

Molar mass = 3230.8 g/mol

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Answer:

B.) trigonal bipyramidal

Explanation:

A.) is incorrect. In octahedral molecules, the central atom is bonded to six other atoms.

B.) is correct. In trigonal bipyramidal structures, the central atom is bonded to five other atoms.

C.) is incorrect. In tetrahedral molecules, the central atom is bonded to four other atoms.

D.) is incorrect. There is not such thing as a pyramidal molecular shape. This term is most likely referring to the shape, trigonal pyramidal. However, this is still incorrect. In trigonal pyramidal molecules, the central atom is bonded to three other atoms and a lone pair of electrons.

The back torn of Camel is important because it acts as a storage facility for

fats.

Camels are found in desert regions where there is scarcity of

This makes the food it eats to get stored at the back in the hump

region as fats so as to enable it survive long periods of unavailability of food.

The fats are gradually metabolized into nutrients which is used by the body

cells to ensure adequate energy availability and optimal survival.

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Answer:

how to rapidly separate red#40 from ZnO

Red #40 is soluble in water while zinc oxide is not. 4- heat the solution of red #40 and water until water evaporates and red#40 remains

hope it's help

For 1 mole of  C₅H₈N₄O₁₂ , 4 moles of water will be produced.

A combustion reaction is a chemical reaction in which a fuel/explosive undergoes oxidation , which results in release of high amount of energy.

The reaction of combustion of C₅H₈N₄O₁₂ (PETN) Explosive is

 C₅H₈N₄O₁₂  → 4H₂O + 3CO₂ + 2CO + 2N₂

For 1 mole of  C₅H₈N₄O₁₂  , 4 moles of water will be produced.

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