what is the solubility of mgco₃ in a solution that contains 0.060 m mg²⁺ ions? (ksp of mgco₃ is 3.5 × 10⁻⁸)

Answer:

c lined with aluminum foil

Answer:

157 grams magnesium chloride

Explanation:

1.  We must first find the molar mass (g/mole) of magnesium chloride.  The molecular formula is MgCl2.

Add the elemental atromic weights for one molecule of the material:

1 Mg = 24.3

2 Cl = 2*(35.45) = 70.9

Total = 95.2 grams/mole

We can use this as a conversion factor by multiplying it times the moles we are asked to convert:  (1.65 moles MgCl2)*(95.2 grams/mole MgCl2).

The moles cancel, leaving us with 157 grams of magnesium chloride.

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{2.997 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 49.784053\)

We have the final answer as

Hope this helps you

for deadlock-free condition

R ≥ P(N − 1) + 1 =m >=n(N-1)+1 = m>=nN-n+1 =m+n>=nN+1 here N=1 max need so m+n>=n+1

Assume N = Sum of all Needs I A = Addition of all Allocations I and M = Addition of all Maximums (i). Using contradiction as evidence

Let's say this system has deadlocks. Because there is only one type of resource and resources may only be requested and released one at a time, if a deadlock condition exists, then A = m.

Condition B states that M m + n = N + A. Identifies N + m m + n. And we obtain Nn. It denotes that Need(i) = 0 for at least one process, i.

Pi can release at least one resource under condition A. Now that n-1 processes share m resources, Conditions a and b are still valid. No method will wait indefinitely or permanently, in reference to the argument.

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Answer:

Its letter A

Explanation:

bilatnimobahougbahokaugduga

Garden forks were originally made of wood, but the majority are now made of forged carbon steel or stainless steel. Hence, option A is correct.

Metals are opaque, lustrous elements that are good conductors of heat and electricity.

A garden fork is used similarly to a spade in loosening and turning over soil.

Its tines allow it to be pushed more easily into the ground, and it can rake out stones and weeds and break up clods, it is not so easily stopped by stones, and it does not cut through weed roots or root-crops.

Garden forks were originally made of wood, but the majority are now made of forged carbon steel or stainless steel.

Hence, option A is correct.

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Answer : The initial concentration of HI and concentration of HI at equilibrium is, 0.27 M and 0.386 M  respectively.

Solution :  Given,

Initial concentration of H_2 and I_2 = 0.11 M

Concentration of H_2 and I_2 at equilibrium = 0.052 M

Let the initial concentration of HI be, C

The given equilibrium reaction is,

    H_2(g)+I_2(g)\rightleftharpoons 2HI(g)

Initially               0.11   0.11            C

At equilibrium  (0.11-x) (0.11-x)   (C+2x)

As we are given that:

Concentration of H_2 and I_2 at equilibrium = 0.052 M  = (0.11-x)

The expression of K_c will be,

K_c=\frac{[HI]^2}{[H_2][I_2]}

54.3=\frac{(C+2(0.058))^2}{(0.052)\times (0.052)}

By solving the terms, we get:

C = 0.27 M

Thus, initial concentration of HI = C = 0.27 M

Thus, the concentration of HI at equilibrium = (C+2x) = 0.27 + 2(0.058) = 0.386 M

Answer:

4 Fe + 6 02 ----> 2 Fe2O3

Explanation:

you need 4 iron and 6 oxygen in each side

There are approximately 1 x 10^23 He atoms in a balloon containing 1/6 mol Helium.

To answer this question, we first need to understand what a mole is. A mole is a unit of measurement used in chemistry that represents the amount of substance in a system. One mole of any substance contains 6.02 * 10^{23} particles, which is known as Avogadro's number.
In this case, we have a balloon containing 1/6 mol He. This means that there are 1/6 * 6.02 * 10^{23} He atoms in the balloon. Simplifying this, we get:
1/6 * 6.02 * 10^{23} = 1.0033 * 10^{23}
Therefore, there are approximately 1 x 10^23 He atoms in the balloon.

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complete question:

I have a balloon containing 1/6 mol He. How many He atoms are in the balloon?

a) 10^23

b) 4 million

c) 0.01

d) 1 x 10^21

A reference chart in chemistry is a table or chart that provides information about various chemical elements and compounds.

What is reference chart ?

A reference chart in chemistry is a table or chart that provides information about various chemical elements and compounds. It can include information such as atomic number, symbol, name, atomic mass, electronegativity, electron configuration, and other properties. Reference charts in chemistry can be used as a quick reference for students, scientists, and other professionals in the field of chemistry. They can also be used for identifying elements, determining chemical formulas, and understanding chemical reactions and processes. Some common examples of reference charts in chemistry include the periodic table, ionization energy chart, and electron affinity chart.

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The new volume of the gas in the balloon when the pressure is doubled is determined as 11.2 L.

The new volume of the balloon is determined by applying general gas equation as shown below

P₁V₁/T₁ = P₂V₂/T₂

Where;

\(\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} \\\\V_2 = \frac{P_1V_1T_2}{T_1P_2} \\\\V_2 = \frac{1 \times 22.4 \times 273}{273 \times 2} \\\\V_2 = 11.2 \ L\)

Thus, the new volume of the gas in the balloon when the pressure is doubled is determined as 11.2 L.

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Answer:

Growing a sunflower that is 10 feet tall is very impressive.

Explanation:

Hope it helps

The catalyst used in the hydrogenation of vegetable oils is a transition metal, commonly nickel, which facilitates the addition of hydrogen atoms to the unsaturated carbon-carbon double bonds in the oil molecules, resulting in a solid product with improved stability and shelf life.

Hydrogenation is a chemical reaction where hydrogen gas (H2) is combined with another substance, often to convert unsaturated molecules into saturated ones. In the case of vegetable oils, hydrogenation is employed to turn liquid oils into solid fats, such as margarine or shortening. This process enhances the stability, shelf life, and melting point of the oils.

The catalyst used in the hydrogenation of vegetable oils is typically a metal, often a transition metal. Common catalysts include nickel, palladium, platinum, and sometimes even rhodium. These metals facilitate the addition of hydrogen atoms to the unsaturated carbon-carbon double bonds found in the vegetable oil molecules. Nickel, being relatively inexpensive and effective, is the most commonly used catalyst in this process.

During the hydrogenation reaction, the vegetable oil is heated and mixed with hydrogen gas. The metal catalyst is introduced, and its presence accelerates the reaction, allowing the hydrogen atoms to be added to the oil molecules efficiently. The result is a product with a higher percentage of saturated fatty acids, leading to its solid state at room temperature.

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Answer:

Metallic character (becoming less metal like)

Explanation:

I took the test

9.  The slope for the given equation 3- y ≤ -5x is 5 and intercept is 3.

Slope-intercept form (y=mx+b) of linear equations highlights the slope (m) and y-intercept (b) of line. The slope intercept formula y = mx + b is used when you know the slope of line that is to to be examined and point given is also the y intercept (0, b). In this formula, b represents y value of the y intercept point.

The slope intercept for of linear equation is: y = mx +b

m is slope and b is y intercept.

So, y = 5x + 3

Now m = 5 ; so the slope is 5

b = 3 ; hence y-intercept is 3

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The coordination number around the central metal atom in ammonium diaquabis(oxalato)nickelate(II) is 6.

In the given compound, ammonium diaquabis(oxalato)nickelate(II), the nickel (Ni) ion is the central metal atom. The coordination number refers to the number of ligands (atoms or molecules) that are directly bonded to the central metal atom. In this case, there are two oxalate ligands (C₂O₄²⁻) and two water ligands (H₂O) bonded to the nickel ion, resulting in a coordination number of 6.

Each oxalate ligand contributes two oxygen atoms, and each water ligand contributes one oxygen atom, giving a total of six ligands surrounding the central nickel atom.

Therefore, in the compound ammonium diaquabis(oxalato)nickelate(II), the central metal atom has a coordination number of 6.

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The shopper does approximately 1580.5 Joules of work on the cart as they move along the 50.0 m length of the aisle.

To find the work done by the shopper on the cart, we can use the formula: work = force * distance * cos(angle).

Given:

Force (F) = 35 N

Angle (θ) = 25° downward from the horizontal

Distance (d) = 50.0 m

First, we need to determine the horizontal component of the force, which is F_horizontal = F * cos(θ).

F_horizontal = 35 N * cos(25°) ≈ 31.61 N

The work done by the shopper on the cart is then:

Work = F_horizontal * distance

Work = 31.61 N * 50.0 m = 1580.5 Joules

Therefore, the shopper does approximately 1580.5 Joules of work on the cart as they move along the 50.0 m length of the aisle.

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Answer: A Temperature of the solute

Explanation:

One thing that would be the symptoms for an air-cooled condenser where the air leaving the condenser is hitting a barrier and recirculating is: that there is less heat transfer from the refrigerant to the surrounding environment. Hence this will cause heat to accumulate in the condenser, making the cooling system inefficient.

A condenser is a heat transfer used in heat transfer systems to cool a gaseous component and condense it into a liquid condition. The latent heat is released by the material and redistributed to the surrounding environment as a result.

The condenser's function is to accept high-pressure gas from the compressor and convert it to liquid. It does this by heat transfer or the notion that heat always moves from a warmer to a colder substance.

The condenser coil, evaporator, expansion valve, and compressor are the components. Each is critical to the overall performance of your unit.

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The concentration of H3O+ at equilibrium depends on the equilibrium constant of the reaction, which is not given.

To calculate the concentration of H3O+ at equilibrium, we need to know the equilibrium constant (Keq) of the reaction between HClO2 and water.

The balanced equation for the reaction is:

HClO2 + H2O ⇌ H3O+ + ClO2-

Assuming that the reaction is in a dilute aqueous solution at standard temperature and pressure, the equilibrium constant expression is:

Keq = [H3O+][ClO2-]/[HClO2][H2O]

Without knowing the value of Keq, we cannot calculate the concentration of H3O+ at equilibrium.

However, we do know that HClO2 is a weak acid and will only partially ionize in water, so the concentration of H3O+ at equilibrium will be less than the initial concentration of HClO2.

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The concentration of H3O+ at equilibrium is 1.60×10^-2 M.

To calculate the  concentration of H3O+ at equilibrium, we need to use the equilibrium constant expression for the reaction: HClO2(aq) + H2O(l) ⇌ H3O+(aq) + ClO2-(aq). The equilibrium constant for this reaction is given by the expression: K = [H3O+][ClO2-]/[HClO2]. The initial concentration of HClO2 is given as 1.51×10^-2 M. Assuming that the change in concentration of H3O+ and ClO2- is "x" at equilibrium, the concentration of H3O+ at equilibrium can be calculated as [H3O+] = [ClO2-] = x and [HClO2] = 1.51×10^-2 - x. Substituting these values in the equilibrium constant expression and solving for "x" gives us the concentration of H3O+ at equilibrium as 1.60×10^-2 M.

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Answer:

Blood, bone, tendon, ligament, adipose, and areolar tissues are examples of connective tissues.Explanation:

The type of gloves that is damaged by contact with petroleum products or solvents is latex gloves.

Latex gloves are a type of protective glove typically made from natural rubber latex. They are commonly used in healthcare settings, as well as in food preparation, cleaning, and other industries that require protection from contact with potentially harmful substances.

Latex gloves provide a barrier against bacteria, viruses, and other pathogens, helping to prevent the spread of infection. They are also durable, flexible, and comfortable to wear, making them a popular choice for many workers. However, some individuals may have an allergy or sensitivity to latex and should use alternative gloves made from materials such as vinyl or nitrile.

That being said, these gloves are made from a natural latex material that is sensitive to oils and solvents, causing them to break down and become damaged. It is recommended to use nitrile or neoprene gloves when handling petroleum products or solvents, as these materials are more resistant to these types of chemicals.

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Ca is the correct answer. Maybe

From the case above, it can be concluded that to dissolve silver acetate in 100 mL of water 0.800g of silver acetate is needed. Silver acetate is one of the most soluble compound in water.

Silver acetate is a chemical compound that has the empirical formula CH₃CO₂Ag. This compound is a white powder like crystalline solid, photosensitive, and moderately soluble in water. In the health sector, silver acetate functions as a deterrent for smokers to smoke in the form of gum, sprays, and lozenges. As well as being utilized as a well-known precursor used in printed electronics.

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Answer:

A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.

Explanation:

According to the graph, the concentration of A decreases with time before leveling out. Option A.

The reaction shown is that of a reversible reaction in which A is on the reactant's side and A2 is on the product's side.

At the beginning of the reaction, the concentration of A decreases as a result of forming A2. In other words, the concentration of A2 increases just as that of A decreases.

With time, the reaction reaches an equilibrium during which the rate of formation of A equals the rate of formation of A2. At this point, the concentration of A levels off.

In summary, the concentration of A first decreases before leveling off.

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To determine the number of moles of sodium hydroxide (NaOH) in the solution, we need to use the given concentration and volume.

The concentration of the solution is 0.350 M, which means there are 0.350 moles of NaOH dissolved in 1 liter (1000 mL) of the solution. First, we need to convert the given volume from milliliters (mL) to liters (L). Since 1 liter is equal to 1000 mL, we have:
Volume = 450.0 mL = 450.0 mL / 1000 mL/L = 0.450 L
Next, we can calculate the number of moles of NaOH using the formula:
Moles = Concentration × VolumeMoles = 0.350 M × 0.450 L = 0.1575 moles
Therefore, there are approximately 0.1575 moles of NaOH in the 450.0 mL of the 0.350 M solution.

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Answer:

The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.

Explanation:

Answer:

nitrogen, oxygen, carbon dioxide, water vapour, ozone, helium, and hydrogen.

Explanation: