i) what would happen to the Vmax of the enzyme if you were to reduce the substrate concentration by 50%?ii)provide reasoning. Less than 50 words total

To calculate the solubility of Fe(OH)2 in water at 25°C, we need to know its solubility product constant (Ksp). The solubility product constant is a measure of the equilibrium between the dissolved and solid states of a sparingly soluble substance.

For Fe(OH)2, the Ksp value at 25°C is approximately 4.87 × 10^-17. We can use this value to find the solubility of Fe(OH)2. First, let's write the balanced chemical equation and the corresponding solubility product expression:
Fe(OH)2 (s) ⇌ Fe²⁺ (aq) + 2 OH⁻ (aq)
Ksp = [Fe²⁺] [OH⁻]²
Let x represent the solubility of Fe(OH)2 in moles per liter. Then, [Fe²⁺] = x and [OH⁻] = 2x. Substitute these values into the solubility product expression:
4.87 × 10⁻¹⁷ = x (2x)²
Solve for x:
4.87 × 10⁻¹⁷ = 4x³
x³ = 1.2175 × 10⁻¹⁷
x = (1.2175 × 10⁻¹⁷)^(1/3)
x ≈ 2.30 × 10⁻⁶6 M
The solubility of Fe(OH)₂ in water at 25°C is approximately 2.30 × 10⁻⁶ moles per liter.

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The height of a ramp does not directly determine the strength of the frictional force between a book and an object.

The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.

The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.

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Answer:

b

Explanation:

. B. atoms of the elements hydrogen and oxygen are in the reactants and also in the productsatoms of the elements

To answer your question, in the electrolysis of a molten mixture of RbF and CaCl2, the product that forms at the negative electrode is Rb metal and F2 gas.

To answer your question, in the electrolysis of a molten mixture of RbF and CaCl2, the product that forms at the negative electrode is Rb metal and F2 gas. This is because the negative electrode, also known as the cathode, attracts positively charged ions, which in this case is Rb+. The Rb+ ions are reduced by gaining electrons from the cathode and form Rb metal. At the same time, the F- ions in the molten mixture are also attracted to the cathode, and they gain electrons to form F2 gas.
On the other hand, the product that forms at the positive electrode, also known as the anode, is Cl2 gas and Ca metal. This is because the positive electrode attracts negatively charged ions, which in this case is Cl-. The Cl- ions are oxidized by losing electrons at the anode to form Cl2 gas. At the same time, the Ca2+ ions in the molten mixture are also attracted to the anode, and they lose electrons to form Ca metal.
It is important to note that in electrolysis, the cathode is the electrode where reduction occurs, while the anode is the electrode where oxidation occurs. Electrodes are conductive materials that allow the flow of electricity and are used in electrolysis to transfer electrons between the solution and the power source.

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Egg whites are simply made frothy by adding air during the whipping process. It's a physical shift as they are still eggs whites—a material that has not changed. Yet in a chemical transformation.

To put it another way, a chemical always consists of the same "substance." There are some substances in nature, like water. Other chemicals, including chlorine, are produced

All of these things are made of chemicals, some organic and others manmade, including air, water, iron, fuel, clothes, stones, equipment, plastics, plants, and food. Chemicals can be made up of several distinct chemicals or they might be specific chemical molecule like water. Nitrogen, carbon, water, carbon dioxide, and other substances are all present in air.

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CaO(s) + CO2(g) → CaCO3(s) Above 1200 K, however, the opposite process takes place: calcium carbonate breaks down into calcium oxide and releases carbon dioxide.

When heated, a compound will split into two or more components, which may be elements or other compounds. As a result, when calcium carbonate is heated, calcium oxide and carbon dioxide are produced.

Lime, a crucial component in the production of steel, glass, and paper, and carbon dioxide are produced when calcium carbonate breaks down. Calcium carbonate is utilised in industrial settings to neutralize acidic situations in both soil and water due to its antacid qualities.

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Question:

Calcium carbonate is heated name the;  reactant and the state:  product and the state:  word equation:  balanced formula:  type of reaction:

Answer:

A. The largest value is 7 and the smallest value is 1. Find the difference. 7 - 1 = 6.

Explanation:

Answer:

Weather:

- The wind is blowing from the south.

- There is a thunderstorm warning.

- The average high temperatures for July in Yellowknife is 32.5 degrees Celcius.

- The wind is blowing at 56 km / hr.

Climate:

- The average temperature for February in Australia is 19 degrees Celsius.

- The average rainfall for June in Kenya is 3.3cm.

- 10mm of rain fell today.

- It is usually cold in Ottawa in January. -There was a cold weather advisory on Jan 21 2020.

-Hurricanes are most likely to hit the Gulf of Mexico and the Carribean.

Explanation:

Hope it helps.

The gland has the ability to synthesize chemical substances that are discharged and used in some other part of the body.

A gland can be described as a group of cells in the body that synthesizes substances such as hormones for release into the bloodstream or into cavities inside the body or its outer surface.

Glands are classified on basis of their shape. If the gland remains its shape like a tube then it is a tubular gland. If the secretory portion of the gland is enlarged and the lumens increased in size then it is termed a saccular gland.

The diseased gland has abnormal development of glandular tissue which is sometimes tumorous.

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The mass of KCl required to make 59.0 mL of a 0.260 M KCl solution is approximately 1.14 grams.

To find the mass of KCl needed to make 59.0 mL of a 0.260 M KCl solution, you can use the formula:

mass = moles × molar mass

First, calculate the moles of KCl needed using the given volume and molarity:

moles = volume × molarity
moles = 0.059 L × 0.260 mol/L
moles = 0.01534 mol

Now, multiply the moles by the molar mass of KCl (74.55 g/mol):

mass = 0.01534 mol × 74.55 g/mol
mass ≈ 1.14 g

So, approximately 1.14 grams of KCl is required to make 59.0 mL of a 0.260 M KCl solution.

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Answer: T = 9.74°C

Explanation: An ideal gas in a quasi-static adiabatic process follows the equation: \(pV^{\gamma} = constant\).

So:

\(1.10^{1.67} = constant\)

constant = 46.7735

Adiabatic conditions can be written as:

\(TV^{\gamma-1}=constant\)

Then, new temperature is

\(T.(10.4)^{1.67-1}=46.7735\)

\(T.(10.4)^{0.67}=46.7735\)

\(T = \frac{46.7735}{4.802}\)

T = 9.74°C

The new temperature is 9.74°C.

The sum of 89.0, 469, and 0.3469, rounded to the appropriate number of significant figures, is 558.3, with three significant figures.

To calculate the sum of 89.0, 469, and 0.3469, we add these numbers together. The sum of 89.0 and 469 is 558.0, and when we add 0.3469 to this sum, we get 558.3469. However, we need to express the result with the correct number of significant figures.

The rule for determining the number of significant figures in addition is to consider the number with the least number of significant figures. In this case, 0.3469 has four significant figures, whereas 89.0 and 469 have three significant figures. Therefore, our final answer should have three significant figures. Rounding the result to three significant figures, we get 558.3.

Significant figures, also known as significant digits, are used to indicate the precision or accuracy of a measurement or calculation. They represent the digits that carry meaning in a number. When performing calculations, it is important to consider the number of significant figures and apply rounding rules to ensure the result is properly expressed.

In addition, the rule for addition and subtraction is to consider the number with the least number of significant figures. This is because the least precise measurement limits the level of precision for the final result. By rounding to the appropriate number of significant figures, we maintain consistency and avoid falsely implying a higher level of precision than is justified by the original data.

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Answer:

See explanation

Explanation:

Turning on a flashlight: The chemical energy in the flashlight batteries is converted to electrical energy when the flashlight is turned on. The electrical energy is then converted to light (electromagnetic / radiant energy) and some thermal energy (little warmth from light in flashlight) by the light bulb. Chemical to Electrical to Light and Thermal

A Toaster: When electrical energy passes through the heating element in a toaster, it converts this electrical energy to thermal energy which helps to prepare toast. Electrical to thermal

Playing a violin: When the violin and the strings vibrate due to mechanical energy, it produces sound waves and sound energy. Mechanical to Sound

Nuclear power plant: Nuclear power plants use heat from fission to make steam that turns the turbine, creating mechanical energy. Mechanical energy turns the electric generator. Thermal to Mechanical

Answer:

The element that is the reaction is Pt

Explanation:

Answer:

The answer is pt on edge

Explanation:

Answer:

January 9th 1915

Explanation:

Multivalent ions are located in the right hand side of periodic table in a zig-zag order.

Multivalent ions are defined as the elements with more than one stable ion. Generally, Ionic compounds containing multivalent elements must have Roman numerals in their names in order to indicate which ions is forming that compound. Basically, the roman numeral is written in brackets after the element to indicate the charge

The Five Multivalent Metals present in the modern periodic table are copper. Cu 1+ copper(I) Cu 2+ copper(II) iron. Fe 2+ iron(II) Fe 3+ iron(III) mercury. Hg2 2+ mercury(I) Hg 2+ mercury(II) lead. Pb 2+ lead(II) Pb 4+ lead(IV) tin. Sn 2+ tin(II) sn 4+ tin(IV).

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The concentration of lead in Saplingville's drinking water is 6.76 x 10^-11 M

To find the concentration of lead in molarity, we first need to convert the given value of 14 ppb to a value in moles per liter (M).

1 ppb = 1 x 10^-9 grams per liter (g/L)
So, 14 ppb = 14 x 10^-9 g/L

Next, we need to convert the mass of lead in grams to moles. The molar mass of lead is 207.2 g/mol.

So, 14 x 10^-9 g/L ÷ 207.2 g/mol = 6.76 x 10^-11 mol/L

Therefore, the concentration of lead in Saplingville's drinking water is 6.76 x 10^-11 M.

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A molecule with strong intermolecular forces will have a weak or low vapor pressure.

Molecules generally with a high intermolecular force of attraction will have a low vapor pressure. This is because since the force of attraction between molecules is high as they are tightly packed, only fewer molecules will get a chance to move with kinetic energy at a given temperature.

Whereas, molecules with weak intermolecular force can travel easily and escape and so will have a greater vapor pressure. But it is not the case with strong intermolecular forces. Molecules with high vapor pressure are called volatile. Therefore, the molecules with strong intermolecular forces will have a low vapor pressure, and only that is expected to happen in such cases.

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If he pressure, temperature, and volume of an ideal gas are related by the equation n=

PV/RT,solving this for R will give us , R = PV/nT

​

We are to solve the given equation, which is PV=nRT, for R. The equation is ideal gas law equation.The ideal gas law is expressed mathematically as PV = nRT, where P, V, n, R, and T represent pressure, volume, number of moles, ideal gas constant, and temperature respectively.To solve this equation for R we need to follow these steps;Step 1 : Rearrange the equation so that R is on one side of the equals sign. PV=nRT can be rearranged into PV = nRT by dividing each side by n. PV/n = RT.  Step 2: Divide both sides of the equation by PT/ nV = RThe final equation we obtain after the above two steps is;R = PV/nT Therefore, we have successfully solved the given equation for R.

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Answer:

avg is 85.4678 atomic mass unit

Option c) NH4Cl will hydrolyze when dissolved in water.

Hydrolysis is a chemical reaction that occurs when a salt reacts with water, resulting in the formation of an acidic or basic solution. In this case, when NH4Cl (ammonium chloride) is dissolved in water, it undergoes hydrolysis.

The ammonium ion (NH4+) is the conjugate acid of ammonia (NH3), which is a weak base. When NH4Cl dissociates in water, the ammonium ion reacts with water to form NH3 and H3O+ (hydronium ion). This process is called hydrolysis.

NH4+ (aq) + H2O (l) ↔ NH3 (aq) + H3O+ (aq)

The formation of NH3 leads to an increase in the concentration of hydroxide ions (OH-) in the solution, making it slightly basic. At the same time, the presence of H3O+ ions makes the solution slightly acidic. Therefore, the hydrolysis of NH4Cl results in a slightly acidic and slightly basic solution.

In contrast, salts like NaCl and KCl do not undergo hydrolysis when dissolved in water because they consist of cations (Na+ and K+) and anions (Cl-) that do not react with water to form acidic or basic species.

Na2SO4 (sodium sulfate) is also an example of a salt that does not undergo hydrolysis. The sulfate ion (SO42-) does not react with water to form acidic or basic species, so the solution remains neutral.

Therefore, among the given options, only NH4Cl undergoes hydrolysis when dissolved in water.

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The question is incomplete. Find the full content below:

Which one of the following salts when dissolved in water will hydrolyse?

a) NaCl

b) KCl

c) NH4Cl

d)Na2SO4

Answer:

A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: (1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed.

Explanation:

Answer:

Using the VSEPR theory, the electron bond pairs and lone pairs on the center atom will help us predict the shape of a molecule. The shape of a molecule is determined by the location of the nuclei and its electrons. The electrons and the nuclei settle into positions that minimize repulsion and maximize attraction.

The correct answer is Carbon Monoxide (CO). When organic matter is burned with insufficient oxygen, it leads to incomplete combustion and the production of various gases, including carbon monoxide. Carbon monoxide is a colorless, odorless gas that is extremely poisonous and can be fatal in high concentrations.Carbon dioxide (CO2) is a product of complete combustion and is not produced when there is insufficient oxygen.Benzene is a hydrocarbon compound composed of six carbon atoms and six hydrogen atoms, and it is not produced from combustion.Methane (CH4) is a hydrocarbon compound composed of one carbon atom and four hydrogen atoms, and it is not produced from combustion.Mercury is a metallic element and is not related to combustion.

Answer:

reactants

The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction

Explanation:

product_The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction. In the equation above, the zinc and sulfur are the reactants that chemically combine to form the zinc sulfide product.

There is a standard way of writing chemical equations. The reactants are all written on the left-hand side of the equation, with the products on the right-hand side. An arrow points from the reactants to the products to indicate the direction of the reaction:

reactants → products

Reactants

1. The substances used as starting materials and which react with one another are reactants.

2. Example: In this reaction Mg and O2 are reactants.

Products

1. The substances which are formed as a result of reaction are products.

2. Example: In this reaction MgO is a product.

Answer:

D. a program on a computer

Explanation:

7.3 mL of NaOH are used to titrate the 10.00 mL aliquot.

The balanced equation for the reaction between NaOH and HCl is:

NaOH(aq) + HCl(aq) → H₂O(l) + NaCl(aq)

To calculate the volume of NaOH used,  determine how much HCl is left after it reacts with the CaCO₃, and then how much NaOH is required to neutralize that remaining HCl.

Step 1: Calculate the moles of HCl used to react with CaCO₃

The balanced equation for the reaction between CaCO₃ and HCl is:

CaCO₃(aq) + 2HCl(aq) → CaCl₂(aq) + H2O(l) + CO₂(g)

From the balanced equation, we can see that 1 mole of CaCO₃ reacts with 2 moles of HCl. Therefore, the number of moles of HCl used to react with the CaCO₃ is:

moles HCl = (7.50 mL)(2.00 mol/L) = 0.015 mol

Step 2: Calculate the concentration of HCl in the 125.0 mL solution

Started with 7.50 mL of 2.00 M HCl, which is equivalent to 0.015 moles of HCl. We added enough water to make a 125.0 mL solution, so the concentration of HCl in the solution is:

C = moles of HCl / volume of solution in L

C = 0.015 mol / 0.125 L = 0.12 M

Step 3: Calculate the moles of HCl remaining in the 10.00 mL aliquot

moles NaOH = moles HCl remaining in aliquot

(C of NaOH)(volume of NaOH) = (C of HCl)(moles of HCl remaining in aliquot)

(0.058 mol/L)(volume of NaOH) = (0.12 mol/L)(moles of HCl remaining in 10.00 mL aliquot)

moles of HCl remaining in 10.00 mL aliquot = moles of HCl in 125.0 mL solution - moles of HCl used to react with CaCO₃

moles of HCl remaining in 10.00 mL aliquot = (0.12 mol/L)(0.125 L) - 0.015 mol = 0.0035 mol

Substituting this into the equation gives:

(0.058 mol/L)(volume of NaOH) = (0.12 mol/L)(0.0035 mol)

volume of NaOH = (0.12 mol/L)(0.0035 mol) / (0.058 mol/L) = 0.0073 L

Step 4: Convert the volume of NaOH to mL

volume of NaOH = 0.0073 L x (1000 mL / 1 L) = 7.3 mL

Therefore, 7.3 mL of NaOH are used to titrate the 10.00 mL aliquot.

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Answer:

Explanation:

c

Answer:

As the age of an object gets older, the half-life of the probe needed to accurately estimate its age should get relatively longer. This is because the longer the half-life of the probe, the more time it has to decay, and therefore the more accurately it can measure the age of the object. For example, if an object is very old and has very little of the original isotope remaining, a probe with a shorter half-life might not have enough time to decay and give a accurate measurement of the object's age. On the other hand, a probe with a longer half-life would have more time to decay and give a more accurate measurement.