Calculate the concentrations of all species present in a 0.100 M aqueous solution of ascorbic acid (H2C2H6O6), a diprotic acid with Ka1 = 8.0 x 10-5 M and Ka2 = 1.6 x 10-12 M. What is the pH of this solution?

Answer:

No, although the bean crop can grow perfectly in full sun or a little shade in very warm places. It does not mean that they will adopt the growth patterns of the cactus, especially because this plant needs constant watering (in small quantities), very constant. Beans require good drainage for their growth.

Each vegetation have its own characteristics and the power of adaptation. A green bean cannot survive in a desert like a cactus in desert without water. It can only grow thick in soil with proper water content and nutrients.

Cactus is a type of plant grow in dry regions such as deserts. It can adapt in deserts without water for long time because, the plant have enough water storage in its stem.

Domestic vegetation such as bean, pea, nuts etc ill not grow in dry regions because they cannot adapt in deserts without water. The soil in deserts is dry and have no nutrients.

These conditions prevent the growth of vegetables in desert areas. Moreover, desert have summer season only. The extreme temperature over there will cause the normal plants to diminish.

Therefore, planting green bean in deserts will not make it grow thick like a cactus plant.

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Answer:

oxygen, carbondioxide

carbondioxide, oxygen

Answer : The original volume of gas is \(365cm^3\)

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas = 800 torr

\(P_2\) = final pressure of gas at STP = 760 torr

\(V_1\) = initial volume of gas = ?

\(V_2\) = final volume of gas at STP = \(450.0cm^3\)

\(T_1\) = initial temperature of gas = \(-40^oC=273+(-40) =233K\)

\(T_2\) = final temperature of gas at STP = \(0^oC=273+0=273K\)

Now put all the given values in the above equation, we get:

\(\frac{800torr\times V_1}{233K}=\frac{760torr\times 450.0cm^3}{273K}\)

\(V_1= 364.8cm^3\approx 365cm^3\)

Therefore, the original volume of gas is \(365cm^3\)

The arrangement and mobility of molecules in a fluid state, controlled by intermolecular interactions, are included in the molecular structure of a liquid.

A liquid is made up of a group of particles, usually molecules, that are constantly moving and display intermolecular forces of attraction. These intermolecular forces, including hydrogen bonds, dipole-dipole interactions, and van der Waals forces, are very important in influencing the behavior and characteristics of the liquid.

Although the molecules in a liquid are closely packed, they are not organized in a predictable way like they are in a solid. Instead, they are sufficiently energetic to move past one another, giving rise to a nature that is fluid and shape-adaptive. This property enables liquids to adopt the shape of the container they are contained in.

A liquid's molecular structure is dynamic and always in motion. Although individual molecules are free to move, intermolecular forces they encounter have an impact on how they behave. Depending on the sort of molecules present and their functional groups, these forces' potency and nature can change.

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Answer: acetone

Explanation: Acetone has the weakest intermolecular forces, so it evaporated most quickly. Water had the strongest intermolecular forces and evaporated most slowly.

Answer:

The specific heat of the metal is 0.0482 joules per gram-Celsius.

Explanation:

Block of metal is cooled by adding water and thermal equilibrium is reached. According to the First Law of Thermodynamics and by supposing the absence of energy and mass interaction of the system with surroundings, the change in the energy of the system is represented by:

\(\Delta U_{m} + \Delta U_{w} = 0\)

Where \(\Delta U_{m}\) and \(\Delta U_{w}\) are the changes in internal energies of the block of metal and water, measured in joules.

The expression described above is now extended by applying the definition of internal energy for constant mass systems:

\(m_{m}\cdot c_{v,m}\cdot (T_{m,in}-T_{m,out}) + m_{w}\cdot c_{v,w}\cdot (T_{w,in}-T_{w,out})= 0\)

Where:

\(m_{m}\), \(m_{w}\) - Masses of the block of metal and water, measured in grams.

\(c_{v,m}\), \(c_{v,w}\) - Specific heats of the block of metal and water, measured in joules per gram-Celsius.

\(T_{in, m}\), \(T_{in, w}\) - Initial temperatures of the block of metal and water, measured in Celsius.

\(T_{out, m}\), \(T_{out, w}\) - Final temperatures of the block of metal and water, measured in Celsius.

The specific heat of the metal is cleared in the equation:

\(c_{v,m} = -\frac{m_{w}\cdot c_{v,w} (T_{w,in}-T_{w,out})}{m_{m}\cdot (T_{m,in}-T_{m,out})}\)

If \(m_{m} = 12.6\,g\), \(m_{w} = 100\,g\), \(c_{v,w} = 4,186\,\frac{J}{kg\cdot ^{\circ}C}\), \(T_{w,in} = 21\,^{\circ}C\), \(T_{m,in} = 94\,^{\circ}C\) and \(T_{m,out} = T_{w,out} = 25.1\,^{\circ}C\), the specific heat of the metal is:

\(c_{v,m} = -\frac{(100\,g)\cdot \left(4,186\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (25\,^{\circ}C-25.1\,^{\circ}C)}{(12.6\,g)\cdot (94\,^{\circ}C-25.1\,^{\circ}C)}\)

\(c_{v,m} = 0.0482\,\frac{J}{kg\cdot ^{\circ}C}\)

The specific heat of the metal is 0.0482 joules per gram-Celsius.

Answer:

(B) It is tetrahedral because there are four bonded pairs around carbon

Explanation:

CCl4 means four chloride ions bonded covalently with single carbon.

its coordination figure is:

CF =  1/2(Vallence of central atom + electrons donated from substituents - charge)

CF = 1/2(4 + 4.1 - 0)

CF = 4

Bond electrons = 4

Lone pair electrons = 0

Hence, CCl4 is tetrahedral

1.4 g Co(OH)₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Unit 0

Atomic Structure

Aqueous Solutions

Stoichiometry

Step 1: Define

[RxN - Balanced] CoCl₂ + 2NaOH → 2NaCl + Co(OH)₂

[Given] 10.0 mL, 1.5 M CoCl₂

[Solve] grams Co(OH)₂

Step 2: Identify Conversions

[Base 10] 1000 mL = 1 L

[RxN] 1 mol CoCl₂ → 1 mol Co(OH)₂

[PT] Molar Mass of Co - 58.93 g/mol

[PT] Molar Mass of O - 16.00 g/mol

[PT] Molar Mass of H - 1.01 g/mol

Molar Mass of Co(OH)₂ - 58.93 + 2(16.00) + 2(1.01) = 92.95 g/mol

Step 3: Stoich

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs as our lowest.

1.39425 g Co(OH)₂ ≈ 1.4 g Co(OH)₂

Answer:

1.4 g Co(OH)₂

Explanation:

Molar mass of Co(OH)₂ = (58.9 + 16.0×2 + 1.0×2) g/mol = 92.9 g/mol

According to the given equation, mole ratio CoCl₂ : Co(OH)₂ = 1 : 1

No. of moles of CoCl₂ reacted = (1.5 mol/L) × (10.0/1000 mol) = 0.015 mol

No. of moles of Co(OH)₂ precipitated = 0.015 mol

Mass of Co(OH)₂ precipitated = (0.015 mol) × (92.9 g/mol) = 1.39 g / 1.4g

====

OR:

(1.5 mol CoCl₂ / 1000 mL CoCl₂ solution) × (10.0 mL CoCl₂ solution) × (1 mol Co(OH)₂ / 1 mol CoCl₂) × (92.9 g Co(OH)₂ / 1 mol Co(OH)₂)

= 1.39 g Co(OH)₂ / 1.4 g Co(OH)₂

The Ksp of the salt AB at 25 °C is 1.8 x 10^-7 M^2. Option A is the correct answer.

The given information states that only 0.0450 mol of the salt AB is soluble in 1.00 L of water at 25 °C. Using this information, we can determine the molar solubility of AB, which is the amount of AB that dissolves per liter of water. In this case, the molar solubility is 0.0450 M.

The Ksp (solubility product constant) is a measure of the equilibrium between the dissolved ions and the undissolved solid in a saturated solution. For the dissociation of AB into A+ and B- ions, the equilibrium expression is [A+][B-]. Since the stoichiometry of the reaction is 1:1, the Ksp can be calculated as the square of the molar solubility: Ksp = (0.0450)^2 = 1.8 x 10^-7 M^2.

Therefore, the Ksp of the salt AB at 25 °C is 1.8 x 10^-7 M^2, which corresponds to option A).

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The density of the solid is  6.724 g/ml.

Density is the number of factors which can be people, animals, vegetation, or objects in a sure place. To calculate density, you divide the number of objects by the dimension of the place. The populace density of a rustic is the wide variety of human beings in that us of a divided by means of the location in square kilometers or miles.

The density of an amount to being counted is its mass divided by means of its quantity. it also includes measured at zero °C and at 1 atmosphere of stress. Density is vital in figuring out the buoyancy of materials in fluids, as well as in evaluating materials and other measurements.

The density of an object is certainly one of its maximum crucial and easily-measured physical properties. Densities are extensively used to perceive natural substances and to represent and estimate the composition of many varieties of combos.

density = mass/ volume

      = 975g/145ml

      = 6.724 g/ml

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Answer:

depending on how you change the angle on the ramp the kanetic energy can go up or down depending on how u angle the ramp

Explanation:

The order of strongest to weakest bond type:

Ionic bond > Polar covalent bond > non polar covalent bond

Explanation:

Strong electrostatic force> temporary attractive force> no force of attraction

Ionic bond > Polar covalent bond > non polar covalent bond

So, from this, we can conclude that the order of ionic bond is the strongest followed by a polar covalent bond and then a nonpolar covalent bond.

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When calcium reacts with chlorine, the reaction involves: a transfer of electrons from Ca to Cl. The correct option is (a).

In the reaction between calcium (Ca) and chlorine (Cl), the electrons are transferred from calcium to chlorine. This is indicated by the formation of calcium ions (Ca²⁺) and chloride ions (Cl⁻).

Calcium has two valence electrons in its outer shell, and chlorine has seven valence electrons. Calcium tends to lose its two electrons to achieve a stable configuration, while chlorine tends to gain one electron to achieve a stable configuration of eight valence electrons.

As a result, calcium loses two electrons, which are gained by chlorine. This transfer of electrons leads to the formation of calcium ions with a +2 charge and chloride ions with a -1 charge.

The option "a. a transfer of electrons from Ca to Cl" correctly describes the electron transfer that occurs during the reaction between calcium and chlorine.

This type of reaction, involving the transfer of electrons, is known as an ionic reaction and is characteristic of the formation of ionic compounds.

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Answer:

1.82

Explanation:

pH is given by the equation

Answer:

The rate reduces by a factor cf /2.

Answer:

- Water from beaker will move to the tube

Explanation:

Total percentage of water in the beaker;

\( = { \tt{100\% - 5\%}} \\ = { \tt{95\%}}\)

Total percentage of water in dialysis tube;

\({ \tt{ = 100\% - 15\%}} \\ = { \tt{85\%}}\)

So, there is much water concentration in the beaker than the dialysis tubing, this causes a determined percentage of water to diffuse to the tubing, and determined percentage of salt to move from tubing to the beaker.

Percentage of water moving to tubing;

\({ \tt{ = 95\% - 85\%}} \\ = { \tt{10\%}}\)

Percentage of salt moving from tubing to beaker

\({ \tt{ = 15\% - 5\%}} \\ { \tt{ = 10\%}}\)

Answer:

sunlight

Explanation:

Answer:

More air pollution because there are fewer trees to take in carbon dioxide

Fewer birds and other wildlife because they have fewer places to live

Explanation:

I took the test on APEX

Answer:

light

Explanation:

Have a nice day

Answer:

light

Explanation:

When red blood cells are placed in Solution A, which contains 150 mM NaCl, no significant changes occur because the concentration of sodium chloride is similar to that of the cells' internal environment. The isotonic nature of Solution A ensures that there is no net movement of water across the cell membrane, resulting in the cells maintaining their normal shape and size.

However, when comparing the tonicity of Solutions B, C, D, and E to Solution A and each other, differences arise. Tonicity refers to the osmotic pressure exerted by a solution on a cell and is influenced by the concentration of solutes within the solution. Solutions B and E both contain additional solutes along with NaCl.

Solution B, consisting of 100 mM glucose and 100 mM NaCl, has a higher tonicity compared to Solution A. Glucose cannot freely cross the cell membrane, creating an osmotic gradient that draws water into the red blood cells, causing them to swell.

Solution C contains 100 mM Drug X, a small non-polar molecule, along with 150 mM NaCl. Since Drug X is non-polar, it can freely cross the cell membrane. The presence of Drug X does not significantly affect the tonicity compared to Solution A, as it does not create an osmotic gradient.

In contrast, Solution D, which contains 150 mM MgCl2, has a higher tonicity than Solution A. MgCl2 dissociates into Mg2+ and Cl- ions, both of which cannot cross the cell membrane easily. The higher concentration of impermeable ions creates an osmotic gradient, leading to water loss from the red blood cells and causing them to shrink.

Lastly, Solution E consisting of 300 mM fructose has a higher tonicity compared to Solution A. Fructose cannot freely cross the cell membrane, resulting in an osmotic gradient that draws water into the red blood cells, causing them to swell.

In summary, placing red blood cells in Solution A does not produce significant changes in the cells. However, when comparing the tonicity of Solutions B, C, D, and E to Solution A and each other, variations in osmotic pressure occur due to the presence of different solutes.

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Answer:

Explain your answer. mg2+ would be the smaller ion this is because each ion has the same number of electrons however mg2+ has a greater number of protons and therefore is more charge dense and the outer electrons feel a greater pull from the nucleus.

Hope this helps, have a great day/night, and stay safe!

Answer:

The Answer Is Quarks

Explanation:

Its mad up of Quarks

i hope this helps

pls make me brilliant or something

The particle that is labeled with a question mark (?) in the diagram is Quarks

Quarks are elementary particles and fundamental constituents of matter. They are considered the smallest known particles that make up protons and neutrons, which are the building blocks of atomic nuclei. Quarks are classified as fermions, which means they follow the rules of quantum mechanics and obey the Pauli exclusion principle.

There are six known types, or flavors, of quarks: up (u), down (d), charm (c), strange (s), top (t), and bottom (b). Each quark flavor has a unique set of properties, including mass, electric charge, and the way they interact with other particles through the strong nuclear force. The up and down quarks are the lightest and most common, while the top quark is the heaviest.

One notable property of quarks is that they possess a fractional electric charge. The up quark has a charge of +2/3 (e/3), while the down quark has a charge of -1/3 (-e/3), where "e" represents the elementary charge carried by an electron. Quarks are never found in isolation due to the confinement principle, which means they are always bound together in composite particles called hadrons.

Quarks interact through the strong nuclear force, which is mediated by particles called gluons. This force binds quarks together to form protons and neutrons, and also governs the interactions within atomic nuclei.

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The solubility product (Ksp) of the salt given in question is 1.6x10^-9.

What is solubility product?

The equilibrium constant for a solid material dissolving in an aqueous solution is the solubility product constant, Ksp. It stands for the degree of solute dissolution in solution. A substance's Ksp value increases with how soluble it is.

Suppose we have reaction:

aA(s)↽⇀cC(aq)+dD(aq)

So, the formula to determine solubility product will be:

\(K_{sp} = [C]^c[D]^d\)

Let S mol/L be the solubility of salt. So,

\(S = [BaSo_4] = [Ba^{2+}] = [So_4^{2-}]\)

\(S = 4.0\times10^{-5}\)

we know that,

\(K_{sp} = [C]^c[D]^d = S\times S\)

\(K_sp = (4.0\times10^{-5}) \times (4.0\times10^{-5})\)

\(K_sp = 1.6 \times 10^{-9}\)

Hence, the solubility product is \(1.6 \times 10^{-9}\).

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Answer: Your answer is Chemical weathering.

Hope this helps!

Answer:

chemical

Explanation:

I hope it help.........

The empirical formula of the compound would be A3B4.The empirical formula of a compound gives the simplest whole-number ratio of the atoms in the compound.

To determine the empirical formula of a hypothetical compound that contains 60% by mass of element A, we need to know the atomic mass of element A.Assuming we know the atomic mass of element A, we can start by assuming a 100 g sample of the compound. Since the compound contains 60% by mass of element A, this means the sample contains 60 g of element A.

Next, we need to convert the mass of element A to moles using its atomic mass. Once we know the number of moles of element A, we can calculate the number of moles of the other element(s) present in the compound by subtracting the number of moles of element A from the total number of moles in the sample.

Finally, we can divide the number of moles of each element by the smallest number of moles to get the simplest whole-number ratio of the atoms. This will give us the empirical formula of the compound.

For example, let's assume that element A has an atomic mass of 20 g/mol. Then, in a 100 g sample of the compound, there would be 60 g of element A, which corresponds to 3 moles of element A (60 g / 20 g/mol = 3 mol). If we assume that the other element in the compound has an atomic mass of 10 g/mol, then the remaining 40 g of the sample would correspond to 4 moles of the other element (40 g / 10 g/mol = 4 mol).

Dividing the number of moles of each element by the smallest number of moles (which is 3), we get the ratio of 3:4 for element A to the other element. Therefore, the empirical formula of the compound would be A3B4.

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Answer:

c warm water

Explanation:

Kinetic energy is related to temperature. The molecules in a glass of warm water have more kinetic energy (they move faster – see Racing Molecules) than the molecules in a glass of cold water. The temperature of a substance is the average* amount of kinetic energy its molecules have.

Answer:

hot water

Explanation:

The reaction is an addition reaction.

Addition reactions are chemical reactions involving 2 or more reactants reacting to produce a single product.

Addition reactions are different from decomposition reactions. In the latter, a single reactant decomposes to give two or more products.

In the illustrated reaction, Cl₂O5 and H₂O react together to form a single product, HCIO3.

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The molarity of the solution is approximately 0.148 M.

To calculate the molarity of a solution, you need to know the moles of solute and the volume of the solution in liters.

First, let's determine the moles of solute (C₆H₁₂O₆) using its mass and molar mass. The molar mass of C₆H₁₂O₆ is calculated by adding the atomic masses of carbon, hydrogen, and oxygen:

C6H12O6:

6 carbon atoms (C) x atomic mass of carbon = 6 * 12.01 g/mol = 72.06 g/mol

12 hydrogen atoms (H) x atomic mass of hydrogen = 12 * 1.01 g/mol = 12.12 g/mol

6 oxygen atoms (O) x atomic mass of oxygen = 6 * 16.00 g/mol = 96.00 g/mol

Total molar mass of C₆H₁₂O₆ = 72.06 g/mol + 12.12 g/mol + 96.00 g/mol = 180.18 g/mol

Next, we can calculate the moles of C₆H₁₂O₆: moles = mass / molar mass = 40.0 g / 180.18 g/mol ≈ 0.222 mol

Now, we need to convert the volume of the solution from milliliters to liters:

volume = 1500 ml = 1500 ml / 1000 ml/L = 1.5 L

Finally, we can calculate the molarity (M) of the solution using the formula:

Molarity = moles of solute / volume of solution in liters

Molarity = 0.222 mol / 1.5 L ≈ 0.148 M

Therefore, the molarity of the solution is approximately 0.148 M.

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There are 0.5 moles of helium atoms present in 11.2 L of Helium gas at Standard Temperature Pressure.

At STP (Standard Temperature and Pressure), which is defined as 0°C (273.15 K) and 1 atm of pressure, one mole of any gas occupies a volume of 22.4 L. Therefore, we can use the following formula to calculate the number of moles of helium atoms present in 11.2 L of He gas at STP:

n = V/ Vm

where n is the number of moles of helium atoms, V is the volume of the gas (11.2 L), and Vm is the molar volume of the gas at STP (22.4 L/mol).

Substituting the values, we get:

n = 11.2 L / 22.4 L/mol

n = 0.5 mol

Therefore, there are 0.5 moles of helium atoms present in 11.2 L of He gas at STP.

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Answer:

When a chemist adds a strip of magnesium metal to a basic solution, the reaction that occurs is the reaction producing a white precipitate of Mg(OH)2. The best answer option is A. No reaction.

Explanation:

The overall moles of all species stay the same. The chemical reaction that occurs when magnesium is added to a basic solution is represented as follows:

Mg + 2OH- → Mg(OH)2↓ + H2↑

Where Mg is magnesium metal and OH- is hydroxide ion. In this reaction, magnesium reacts with hydroxide ions to produce magnesium hydroxide and hydrogen gas. Magnesium hydroxide is a white precipitate and will form immediately as soon as magnesium is added to the basic solution.

It is insoluble in water and thus, separates from the solution in the form of a white precipitate. Therefore, the correct answer is option A. No reaction. The overall moles of all species stay the same.

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