will cu(oh)2 precipitate out of a solution whose ph is 6.8 and whose concentration of cu2 is 0.18 m? explain and justify your answer with calculations.

Answer:

A chemical change results in a new substance being formed whereas a physical change will result in a different state of matter

Draw each isomer and take into account all potential isomerisms. [Cr(NH3)5(NO2)]Cl2, the original compound; [Cr(NH3)5(ONO)] Cl2 (linkage isomerism via NO2), [Cr(NH3)5Cl)Cl(NO2) (ionization isomerism).

The two basic types of isomerism are stereoisomerism and spatial isomerism, in which the bonds between the atoms are the same but their relative positions are different, and structural as well as constitutional isomerism, in which the bonds between the atoms differ.

Their bonding patterns and the way they occupy three-dimensional space allow you to distinguish between them. By examining the bonding patterns, distinguish structural (constitutional) isomers. While the atoms in the compounds are identical, their connections create various functional groups.

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A rate is what is used when two quantities are in a ratio but have different units. We can predict how one quantity will change as we adjust another using rates.

Volume of a cone = π*r^2*h/3

                              = π*10^2*20/3

                              = 2094.3951 cubic meters.

Volume of water lost when its 8 inches deep = V = π*r^2h/3

                                                                             = π·10^2·12/3

                                                                             = 1256.63706 cubic meters.

Remaining volume = 2094.3951 - 1256.63706

                               = 837.758 cubic meters.

Volume of water lost per minute = 0.5 cubic meters.

Time remaining =  837.758 * 0.5

                          = 7 hours approx.

Volume is a measurement of three-dimensional space that is occupied. It is frequently expressed mathematically using standard or SI-derived units. Volume and the measurement of length are connected.

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Electrical conductivity is the property of metals is as a result of having delocalized valence electrons. The correct option to this question is D.

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Answer:

O ( Oxygen )

because oxygen atom is a non metal and highly electronegative which reacts by itself to form a di-molecular compound of Oxygen

\(O _{2}\)

Answer:

4 yards/second is the answer

Answer:

the answer is 4 yards per second

Explanation:

80 yards in 20 seconds

20+20+20+20=80

there are 4, 20s to make 80

in other words...

80÷4=20

Answer:

by watching and writing down the information that is provided

Explanation:

The method for extracting magnesium from magnesium sulphate solution described in the invention includes the following steps: decreasing stress.

The technique described by the invention includes the following steps to recover magnesium from the a magnesium sulphate solution: Calcium sulphate, which is employed as a seed crystal, is mixed with cao and/or calcium hydroxide in (A), and magnesium sulphate solution is mixed with the ca(oh)2 and/or calcium hydroxide combination in (B).

The most favoured method for separating the halite crystals from the magnesium sulphate crystals after milling is elutriation. This method involves pumping air into a container(19) containing a mixture very coarse halite and fairly fine magnesium.

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Answer:

heat

wather

climate

cold

Answer:

1)burning of wood

2)digestion of food

3)process of photosynthesis

4)cooking of food

Answer:

C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + H₂O

Explanation:

When a forest burns and all that's left is some ash,  most of the mass of the trees go to the atmosphere, in the form of carbon dioxide.

In a total combustion process of organic matter, the two molecules produced are carbon dioxide and water. (CO₂ and H₂O)

The equation for the combustion of glucose is:

C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + H₂O

Answer:  i think C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + H₂O

Explanation:

Answer:

The Ideal gas law

Explanation:

From the given question, we have:

V \(\alpha\) \(\frac{nT}{P}\)

where each variable has its usual meaning.

Thus,

V = \(\frac{nRT}{P}\)

where R is the ideal gas constant

cross multiply to have;

PV = nRT

This implies that the volume of the gas is directly proportional to the number of moles of the gas.

Therefore, the law can be used to determine the relationship between the volume and number of moles is the ideal gas law.

Among the given polymers, polycarbonate would be suitable for the fabrication of cups to contain hot coffee.

Polycarbonate is a thermoplastic polymer known for its excellent heat resistance and durability. It has a high glass transition temperature and can withstand high temperatures without melting or deforming. This makes it suitable for holding hot beverages such as coffee without compromising its structural integrity.On the other hand, polyethylene, polypropylene, poly(vinyl chloride) (PVC), and PET polyester have lower heat resistance compared to polycarbonate. These polymers may soften or deform at higher temperatures, which can be a concern when handling hot liquids like coffee.Therefore, polycarbonate stands out as a suitable choice due to its superior heat resistance, making it well-suited for the fabrication of cups to contain hot coffee.

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Answer:

The loudness of sound is determined, in turn, by the intensity, or amount of energy, in sound waves. The unit of intensity is the decibel (dB) Intensity of sound results from two factors: the amplitude of the sound waves and how far they have traveled from the source of the sound.

Explanation:

Mendeleev developed the periodic table, the element gallium had not yet been discovered because gallium has known biological value

There is a very close match lies between the gallium actual property and the properties that were predicted and this has helped a lot in gaining a wider acceptance periodic table of Mendeleev and he left blank spaces for the undiscovered element atomic masses 44 scandium 68 gallium 72 germanium and 100 techtanium and so certain element can be grouped together

The element has no known biological value and in nature gallium is never found as a free element and cannot be found in substantial amount in any minerals and the element which were unknown when Mendeleev gave his classification were geranium gallium and scandium and he left gap for the unknown element and gallium has the atomic number is 31 and atomic mass is 69.72

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Answer:

C

Explanation:

APEX

the conclusions of an scientific experiment tell why the data support or reject the hypothesis. Thus option C is correct.

Scientific experiment involve asking different scientific questions, making hypothesis, design experiment, result and conclusion.

A good scientific experiment should have some facts which can be answered by using data analysis.

The types of scientific questions are Verification questions, Theory questions, Experimental questions

The verification question can be solved by collecting data from observation, which include characteristics or properties of a subject.

A theory question refers an imaginative exercise, is not fictional, depend on prior knowledge of the phenomenon being asking about.

The scientific question or an experimental question used to compare the element of a system when altered, it involves variables such as independent, dependent and controlled variables.

Thus option C is correct.

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The dipotassium salt of citric acid (K2HC6H5O7) is formed by the neutralization reaction between citric acid (H3C6H5O7) and potassium hydroxide (KOH).

The citric acid molecule has three acidic hydrogen atoms that can dissociate in water to form H+ ions, resulting in an acidic solution. However, in the dipotassium salt form, two of the acidic hydrogen atoms have been replaced by potassium ions, leaving only one acidic hydrogen atom.

When the dipotassium salt of citric acid is dissolved in water, the remaining acidic hydrogen atom can dissociate to form H+ ions, but the solution will be less acidic compared to a solution of citric acid. Therefore, the dipotassium salt of citric acid forms a weakly acidic solution in water.

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50 % is the yeild of reaction, expressed in percentage terms, if 4 grams of hydrogen and extra oxygen produce 18 grams of water

The reaction involving the process is:

\(2H_2+O_2- > 2H_2O\)

so the number of moles of water is same as the number of moles of hydrogen given that oxygen is in excess so hydrogen is limiting reagent

number of moles of hydrogen = given mass/ molar mass

=> 4 /2

=>2

number of moles of water = given mass / molar mass

=> 18/18

=>1

so the 1 mole of  water is formed by 2 moles of hydrogen so the percentage yeild is given as:

\(\frac{moles of water}{moles of hydrogen}\) *100

=> 1/2 *100

=> 50

so the yeild of the reaction is 50%

A limiting reagent is a reactant that entirely consumes itself before any other reactants are used up in a chemical reaction, hence restricting the amount of product that may be created. It can be found by comparing the proportions of each component in the reaction and its stoichiometry. Once the limiting reagent has been determined, the amount of product that can be generated can be computed using the reaction's stoichiometry.

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Minerals Can Be formed by Precipitation, Crystallization

Answer:

Option 3 or C An ion is all in Electrostatic forces so it's c if its not I'll work it out for you

An ion with a negative charge will repel another ion with a negative charge is the correct statement.

The electrostatic force is the force that exists between electrically charged particles or objects at rest means that objects having similar charge repel each other whereas objects having different charges attract each other.

An ion with a negative charge will repel another ion with a negative charge is the statement true about electrostatic forces because electrostatic force always occur between static object having charges on it.

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KOH serves as the base in the reaction in the chemical equation H2SO4 + KOH H2O + K+ + HSO4-. Potassium hydrogen sulphate (KHSO4) and water are produced when the strong base KOH reacts with the strong acid H2SO4.

Potassium hydroxide, also known as KOH, is a potent alkali used in a wide range of industrial and laboratory processes. It is a white, odourless solid that dissolves quickly in water and produces a potent alkaline solution. In chemical reactions, KOH is frequently used as a base, especially in the creation of soaps, detergents, and biodiesel. It is also employed in the production of potassium salts, fertilisers, and dyes, as well as an electrolyte in alkaline batteries. KOH is also used in the manufacturing of some pharmaceuticals and cosmetic products, as well as in the food industry as a pH regulator.

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Answer: 294.3 g/mol

Explanation: Calculate the molar mass of aspartame.

I believe that the answer is C

Answer:

In simple synthesis reactions involving reaction of elements, such as aluminum metal reacting with chlorine gas, the product will be a simple compound containing both elements. In this case, it is easiest to consider the common charges that the elements adopt as ions and build your product accordingly.

Explanation:

The number of different codons for an amino acid and the frequency of the amino acid in proteins is correlated for a given bacterium. The codon usage bias of the bacterium helps to dictate the frequency of the amino acids in proteins.

There are 64 different codons for 20 different amino acids, and this implies that multiple codons can encode the same amino acid. However, the occurrence of synonymous codons in a bacterium's genome is not uniform, and some codons are used more frequently than others. This phenomenon is known as codon usage bias, and it varies between bacterial species.

This is determined by the tRNA population and other factors that may impact gene expression. There is a correlation between the number of different codons for an amino acid and the frequency of that amino acid in proteins for a given bacterium. For example, the bacterium Escherichia coli has 4 codons for phenylalanine, with UUU being the most frequent. As a result, phenylalanine is one of the most frequent amino acids in E. coli proteins.

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False: Oxidative phosphorylation and photophosphorylation do not share chlorophyll.

Chlorophyll is specifically involved in photophosphorylation, which occurs during photosynthesis in plants, algae, and some bacteria. Oxidative phosphorylation, on the other hand, takes place in the mitochondria of eukaryotic cells during cellular respiration and does not involve chlorophyll.

A phosphate group is added to a molecule, often a protein or a nucleotide, during the biological process of phosphorylation. The target molecule receives the phosphate group from ATP (adenosine triphosphate), which is transferred by enzymes known as kinases. By causing structural changes, generating or destroying binding sites, or driving the activation or inhibition of signalling pathways, phosphorylation can modify the function and activity of the target molecule. Phosphorylation is frequently controlled in response to environmental and developmental stimuli and is essential for many cellular activities, including metabolism, cell signalling, gene expression, and cell division.

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We would need 2.635 moles of AIPO₄ to produce 168.6g of oxygen.

To calculate the number of moles of AIPO₄ required to produce 168.6g of oxygen, we need to use stoichiometry. From the balanced chemical equation, we know that 1 mole of AIPO₄ produces 2 moles of O₂. We can use the molar mass of O2 to convert the given mass of oxygen to moles:

Molar mass of O₂ = 32 g/mol

Moles of O₂ = mass of O2 / molar mass of O2

                     = 168.6 g / 32 g/mol

Moles of O₂ = 5.27 mol

Since 1 mole of AIPO₄ produces 2 moles of O₂, we can use the mole ratio to calculate the number of moles of AIPO4 needed:

Moles of AIPO₄ = Moles of O₂ / 2

Moles of AIPO₄ = 5.27 mol / 2

Moles of AIPO₄ = 2.635 mol

As a result, 2.635 moles of AIPO₄ are required to create 168.6g of oxygen.

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