An industry located close to farmlands produces large amount of waste water that contains suspended particles. What should be done to manage the waste water drained from the industry?

(a) reusing the drained water to irrigate farmlands
(b) recycling the drained water to be used in other industrial processes
(c) draining the water produced from the industry in rivers to increase the level of water
(d) diverting the water through water pipes and channels to recharge underground

Approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M.

To determine the mass of glucose (C6H12O6) required to prepare a 0.215 M solution in 5000 mL, we need to use the formula:

Molarity (M) = moles of solute / volume of solution (in liters)

First, let's convert the volume of the solution from milliliters (mL) to liters (L):

5000 mL = 5000/1000 = 5 L

Now, we can rearrange the formula to solve for moles of solute:

moles of solute = Molarity (M) x volume of solution (L)

moles of solute = 0.215 M x 5 Lmoles of solute = 1.075 mol

Since glucose (C6H12O6) has a molar mass of approximately 180.16 g/mol, we can calculate the mass of glucose using the equation:

mass of solute = moles of solute x molar mass of solute

mass of glucose = 1.075 mol x 180.16 g/mol

mass of glucose = 194.0 g (rounded to three significant figures)

Therefore, approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M. It's important to note that the molar mass of glucose used in this calculation may vary slightly depending on the level of precision required.

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The concentration of species in the reaction changes the reaction in the following ways: decrease carbon dioxide = forward direction of reaction.

The direction of the reaction can be assessed by the following.  On increasing the concentration of the reactant the reaction processes in the forward direction. On increasing the concentration of product the reaction processes in the backward direction.  

The given equilibrium is:

2CO(g) + O2(g) ↔ 2CO2(g)

increase CO = forward direction of reaction  

increase oxygen = forward direction of reaction

decrease CO = no change in equilibrium as reaction not processes.  

decrease oxygen = no change in equilibrium as reaction not processes.  

increase carbon dioxide= reverse direction  

decrease carbon dioxide = forward direction of reaction.

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If a teacher showed an animal to students on a field trip. The  tool will allow the students to best see the animal up close is the hand lens.

Option D is correct.

A hand lens is known as a magnifying glass  which is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle.

A hand lens  has two essential properties which are its focal length and its diameter.

The students will therefore require a hand lens to look up the animal close.

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#complete question:

A teacher showed this animal to students on a field trip. Which tool will allow the students to best see the animal up close? O A Tape measure O B Graduated cylinder O c. Notebook O D. Hand lens

Answer:

False

H2N2 is used in organic synthesis. This compound can exist as two distinct species, one that is polar and one that is nonpolar; but the H-H bond is said to be nonpolar.

Answer:

44.8 grams

Explanation:

The density exists as a ratio comparing the mass of a piece of copper per 1 cm³. Since you have been given a new volume, you can set up a proportion to find the new mass.

\(\frac{8.96 grams}{1.00 cm^3} =\frac{?grams}{5.00cm^3}\)                                         <----- Proportion

\(44.8 = (1.00cm^3)(?grams)\)                              <----- Cross-multiply

\(44.8= ?grams\)                                                 <----- Divide both sides by 1.00

Answer: Density means the compactness of an object

I hope this helps, and Happy Holidays! :)

Answer:

No, no precipitate is formed.

Explanation:

Hello there!

In this case, since the reaction between ammonium sulfide and aluminum nitrate is:

\(3(NH_4)_2S(aq)+2Al(NO_3)_3(aq)\rightarrow Al_2S_3(s)+6NH_4NO_3(aq)\)

In such a way, we can calculate the concentration of aluminum and sulfide ions in the solution as shown below, and considering that the final total volume is 140.00 mL:

\([Al^3^+]=\frac{120.00mL*0.0082M}{140.00mL}=0.00703M\)

\([S^2^-]=\frac{20.00mL*0.0090M}{140.00mL}=0.00129M\)

In such a way, we can calculate the precipitation quotient by:

\(Q=[Al^3^+]^2[S^2^-]^3=(0.00703)^2(0.00129)^3=1.05x10^{-13}\)

Which is smaller than Ksp and meaning that the precipitation does not occur.

Regards!

Answer:

1600 microliters

Explanation:

µl =mL ÷ 0.0010000 so 1.60÷0.00010000=1600

Answer:

Displacement reaction

Answer:

I say the second one, im not rlly sure tho

Explanation:

Answer:

C.) protons and neutrons

Explanation:

Most atoms contain proton(s), neutron(s), and electron(s). Within the nucleus of an atom, there are protons and neutrons. Electrons are located outside of the nucleus.

The appropriate items to their respective bins are:

Covalent: Carbon dioxide

Ionic: Table salt

Metallic: Iron

Molecular: Sugar

What is bins?

Bins are containers used for storing and organizing items. They can be made from a variety of materials, including wood, metal, and plastic, and come in many shapes and sizes. Bins are often used in large warehouses, retail stores, and other business establishments to store and organize products, tools, and other items. In the home, bins can be used to store toys, shoes, and other items that need to be kept organized.

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Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

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Answer:

The total pressure of a mixture of gases can be defined as the sum of the pressures of each individual gas: Ptotal=P1+P2+… +Pn. + P n . The partial pressure of an individual gas is equal to the total pressure multiplied by the mole fraction of that gas.

The new volume of a sample of gas that initially has a pressure of 3.2 atm and a volume of 345 ml is 120mL.

How to calculate volume?

The volume of a sample of gas can be calculated using the following formula:

P1V1 = P2V2

Where;

P1 = initial pressure

P2 = final pressure

V1 = initial volume

V2 = final volume

3.2 × 345 = 9.2 × V2

1104 = 9.2V2

V2 = 1104/9.2

V2 = 120

Therefore, the new volume of a sample of gas that initially has a pressure of 3.2 atm and a volume of 345 ml is 120mL.

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To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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At equilibrium, the concentrations of reactants and products are constant and do not change over time. In this particular reaction, 2 molecules of CH₂ combine to form 1 molecule of C₂H₂ and 3 molecules of H₂.

Initially, when the reaction starts, there is only CH₂, and as the reaction proceeds, some of the CH₂ molecules are converted into C₂H₂ and H₂. As the concentrations of C₂H₂ and H₂ increase, the reverse reaction can occur where C₂H₂ and H₂ react to form more CH₂ molecules. This process continues until the rate of the forward reaction equals the rate of the reverse reaction, resulting in a state of equilibrium.

At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction. The concentrations of reactants and products no longer change over time, and the system is said to be in a state of dynamic equilibrium.

Answer:

Water has a chemical formula of H2O . In here, there are two hydrogen atoms and one oxygen atom, and so its mass will be 2+16=18 amu . There are two water molecules formed, and that means the total mass of the products is 18⋅2=36 amu .

Answer:

hope this helps <3

Explanation:

Landon glances across the dinner table and thinks to himself that his fathers curly hair looks just like his own. He wishes his hair were straight like his mothers because he thinks he looks better with straight hair. Landon works hard to keep it straighter by combing and using hair gel, but it usually curls right back up. He has his mothers nose, but not her hair, unlike his sister Emily, who is also the result of the combination of the DNA from both of his parents and has straight hair like their mothers. Most eukaryotic organisms, like Landon, are formed through the process of sexual reproduction. Landon realizes that he and Emily are evidence that sexual reproduction, the combination of their two parents, creates diverse offspring.

Landons dinner plate is filled with one of his favorite foods-mashed potatoes made from potatoes fresh from his grandmothers garden. He remembers helping her get ready to plant the potatoes in early spring. They cut each potato into several pieces and planted the pieces in a nice straight row in the garden. When these eukaryotic plants came up, he noticed that each plant looked like all the others. These identical offspring with uniform traits are the result of asexual reproduction. Landons grandmother grew potatoes by cutting the whole potato into smaller pieces, which is a type of asexual reproduction called vegetative propagation.

After dinner, Landon wanted to go watch television, but his mother insisted that he put the leftover food in the refrigerator. Perhaps she knew that the cool temperature inside the refrigerator would stop the growth of bacteria, which are prokaryotic and can reproduce asexually in as little as 20 minutes. This rapid asexual reproduction, called binary fission, would produce thousands and thousands of identical bacterial cells that could cause Landons tasty leftover food to spoil before the end of his favorite show.

Landon finishes up the dishes and puts away the leftovers. As he sets the last dinner glass back into the cupboard, he catches a glimpse of his curly hair in his reflection. He thinks to himself that his mothers nose and his fathers hair are actually a good combination that looks pretty good on him

There are 48 hydrogen atoms,  24 carbon atoms, and 12 oxygen atoms, also 12 molecules of acetaldehyde were produced in the reaction.

The equation of the reaction is;

12C2H4 + 6O2 ------> 12 CH3CHO

In order to approach this problem, the balanced reaction equation is the first step. There are 12 ethylene molecules and six oxygen molecules. These will combine as shown.

There number of atoms involved are as follows;

H = 48

C = 24

O = 12

There are 12 molecules of acetaldehyde produced in the reaction.

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The standard Gibbs free energy change of the reaction at 25°C is -18,262 J/mol.

Energy is the ability to do work. It exists in many forms, such as kinetic energy (energy of motion), potential energy (stored energy), thermal energy (heat), chemical energy (energy stored in the bonds of molecules), electrical energy (energy carried by electrons), and nuclear energy (energy produced in the nucleus of an atom).

The reaction given is a reversible reaction and the given Kp value is at 25°C. Therefore, we can use the equation ΔG°rxn = -RT ln Kp to calculate the standard Gibbs free energy change of the reaction.
We know that R = 8.314 J/mol K and T = 298 K (25°C)
Therefore, ΔG°rxn = - 8.314 J/mol K x 298 K x ln (2.26 x 10⁴)
ΔG°rxn = -18,262 J/mol
Therefore, the standard Gibbs free energy change of the reaction at 25°C is -18,262 J/mol.

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Taking into account the reaction stoichiometry, 0.041 moles od KCl are formed when 5 grams of KClO₃ is decomposed.

In first place, the balanced reaction is:

2 KClO₃ → 2 KCl + 3 O₂

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 reaction stoichiometry 245.1 grams of KClO₃ form 2 moles of KCl, 5 grams of KClO₃ form how many moles of KCl?

\(moles of KCl=\frac{5 grams of KClO_{3}x2 moles of KCl }{245.1 grams of KClO_{3}}\)

moles of KCl= 0.041 moles

Then, 0.041 moles od KCl are formed when 5 grams of KClO₃ is decomposed.

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Answer:

A: Train I had the fastest average speed

C: Trains II and V had the same average speed

E: Trains III and IV had the same average speed

Explanation:

Answer:

Volume = 35.3L

Explanation:

Use Ideal Gas Law (PV=nRT) and isolate for V (volume) by dividing both sides by P (pressure). You will then get the eqaution listed below and you can solve by using the method I used below.

V = nRT/P

V = (0.75kPa)(8.314)(298K)/(52.7kPa)

V = 1858.179/52.7

V = 35.3L

Answer

Ions

Explanation

Answer: C

Explanation:

In endothermic reactions, enthalpy is positive, and in exothermic reactions, enthalpy is negative, So, if enthalpy is positive, then it is an endothermic reaction, and hence is required for the reaction to occur.