Write a balanced net ionic equation for each reaction. Hint pb(no3)2(aq) + h2so4(aq) → pbso4(s) + hno3(aq) pb(c2h3o2)2(aq) + hcl(aq) → pbcl2(s) + hc2h3o2(aq) na3po4(aq) + fecl3(aq) → nacl(aq) + fepo4(s) (nh4)2s(aq) + co(no3)2(aq) → cos(s) + nh4no3(aq)

The solubility of ionic compounds depends on the nature of the ions and their charges.

Ionic compounds containing Na+, K+, and NO3- ions are generally soluble in water because they have small ionic radii and weak ionic interactions. On the other hand, ionic compounds containing Ba2+, PO4-3, and CO3-2 ions tend to be less soluble in water because they have larger ionic radii and stronger ionic interactions.

Ba2+ and PO4-3 ions tend to form insoluble compounds, such as Ba3(PO4)2, while Ba2+ and CO3-2 ions can also form insoluble compounds, such as BaCO3. K+ and CO3-2 ions may also form an insoluble precipitate when combined with certain cations such as Ba2+. Overall, the solubility of ionic compounds can be influenced by factors such as temperature, pH, and the presence of other ions in the solution.

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Answer: yeah i just attached a labeled picture ‍♀️

Answer:

126 g of H₂O

Explanation:

Firstly, we complete the equation:

2H₂  +  O₂  →  2H₂O

If we have 7 moles of hydrogen, we assume, the oxygen is in excess.

Ratio is 2:2.

2 moles of hydrogen can produce 2 moles of water

Then, 7 moles of H₂ must produce 7 moles of water.

We convert moles to mass → 7 mol . 18 g/mol = 126 g

Answer:

The pH of the solution resulting from mixing 100 cm3 of 0.50 mol dm–3 HCl(aq) with 200 cm3 of 0.10 mol dm–3 NaOH(aq) is 12.2, calculated using the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution.

Explanation:

Answer:

Fair Labor Standards Act

Explanation:

It is correct. I just took the test on Clever

Answer:

I would say it’s B

Explanation:

Answer:8.933572

Explanation:

for an approximate result, multiply the volume value by 3.785

Answer:

8.934 liters

Hopefully this helped!

-✩sandwichchan✩

Answer:

Metallic character of the element

Explanation:

Answer:

Element is a pure substance that cannot split up into simpler form by chemical means while compound is a substance that is made up by two or more elements in a chemical combination

Periods are horizontal columns of the periodic table which have same number of shell

Groups are vertical columns with the same number of outer most shell

Halogens react with metals to form salts

5b. He arranged elements in order of their increasing atomic masses and by similarities of properties

6. Calcium Ca

Barium Ba

Helium He

Neon Ne

7a. 2NaOH + O2

7c. alkali Will observed

Answer:

45.6 degrees Celsius

Explanation:

The pressure of the gas inside the cylinder is 52.90 atm

Given is the number of moles of gas, the temperature and the volume of the gas and we need to find the pressure of the gas inside the cylinder, for this we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure of the gas (in units of pressure, such as atm)

V = Volume of the gas (in liters)

n = Number of moles of the gas

R = Ideal gas constant (0.0821 L·atm/(mol·K))

T = Temperature of the gas (in Kelvin)

First, let's convert the temperature from Celsius to Kelvin:

T = 25.0 °C + 273.15 = 298.15 K

Now we can substitute the values into the ideal gas law equation:

P × 12.5 L = 27.0 moles × 0.0821 L·atm/(mol·K) × 298.15 K

Simplifying the equation:

P × 12.5 L = 661.2587 L·atm

Dividing both sides by 12.5 L:

P = 661.2587 L·atm / 12.5 L

P ≈ 52.90 atm

Therefore, the pressure of the gas inside the cylinder is approximately 52.90 atm.

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We can use the ideal gas law equation to determine the pressure of a gas within a cylinder:

PV = nRT

Where:

P is the pressure of the gas (in units of pressure, such as atm)

V is the volume of the gas (in units of volume, such as liters)

n is the number of moles of the gas

R is the ideal gas constant (0.0821 L·atm/(mol·K))

T is the temperature of the gas (in units of temperature, such as Kelvin)

we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 25.0 °C + 273.15

T(K) = 298.15 K

Now we can plug the data into the ideal gas law equation as follows:

P * 12.5 L = 27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K

Simplifying the equation:

P = (27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K) / 12.5 L

Calculating the pressure:

P ≈ 5.046 atm

As a result, the gas inside the cylinder is under a pressure of about 5.046 atm.

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BEcause

Explanation:

Sulfur (or sulphur in BrE) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic.

Silicon is represented by small brown sphere in the center of this silica tetrahedron.

The silica tetrahedron that positions the support of all the silicate crystal is composed of silicon and oxygen. The mineral quartz SiO₂ is create in all types of rock and in all portions of the world.

Quarts falls into a group of minerals called the silicates, all of which comprise the elements silicon and oxygen in some amount. Silicates are by far the most shared minerals in earth’s crust and mantle creating up 95% of the crust and 97% of the mantle by most estimations.

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Answer T

Explanation:

You are looking for an element in the fourth period and a transition metal. As most have about 3 valence electrons. Gallium and Scandium work perfectly.

Answer:

Gallium is the Answer.

Explanation:

In kinematics, a scalar variable known as the speed of an object is frequently used to express how much its position varies over time or how much it changes per unit of time.

In Newtonian physics, an object's linear momentum, translational momentum, or simply momentum is defined as the product of its mass and velocity. It is a vector quantity since it has both a magnitude and a direction. The formula mathbfp = m mathbfv determines an object's momentum p if it has mass m and velocity v.

The vehicle will travel 300 cm farther while traveling at a high speed than when moving more slowly.

The truck's speed will be reduced by the weight of the 50g of earth it contains since speed is calculated as distance * time. increasing the amount of time needed to travel a distance.

When the truck is empty, however, it will take less time to travel that distance since the weightlessness will increase its speed.

The weight of an object refers to the gravitational force acting on it. Weight is the term used in many widely used textbooks to describe the gravitational force exerted on the object. Weight is sometimes referred to as a scalar quantity that gauges the strength of the gravitational pull.

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Answer:

165.3 cm^3

Explanation: hope this is correct!!

P1 * V1 / T1 = P2 * V2 / T2

P1 = 84.6 kPa

V1 = 215 cm³

T1 = 23.5°C = 23.5 + 273 K = 296.5 K

At STP:

P2 = 101.3 kPa

V2 = ?

T2 = 273 K

In the equation Ni²⁺(aq) + 6 NH₃(aq) ⇆ Ni(NH₃)₆)²⁺(aq), NH₃ is acting as a ligand. In this reaction, ammonia (NH₃) molecules are bonding to the nickel ion (Ni²⁺) to form a complex ion, Ni(NH₃)₆)²⁺. NH₃ is acting as a ligand, which means it is a molecule or ion that forms a coordinate covalent bond with a central metal ion. Ligands donate electron pairs to the metal ion, forming a complex that stabilizes the metal ion.

In this reaction, NH₃ is acting as a ligand. A ligand is a molecule or ion that binds to a central metal ion to form a coordination complex. In this case, the Ni²⁺ ion is the central metal ion, and NH₃ molecules act as ligands by donating their lone pair of electrons to form coordinate covalent bonds with the metal ion. The resulting complex, Ni(NH₃)₆)²⁺, has six NH₃ ligands attached to the central metal ion. This reaction is an example of complexation, which is the process of forming coordination complexes. Complexation is a common chemical phenomenon that is used in various applications, including catalysts, sensors, and pharmaceuticals.

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Answer:

4. c) Lose only 3 electrons

5. d) Nitrogen.

Your answers are correct

Answer:

Explanation:

Answer:

each principal energy level above the second contains, in addition to one s orbital and three p orbitals, a set of five d orbitals, called the d sublevel. The five d orbitals can hold up to 10 electrons. Thus, the third level holds a maximum of 18 electrons: 2 in the s orbital, 6 in the three p orbitals, and 10 in the five d orbitals.

Explanation:

addition of potassium hydroxide slightly increases the pH .

What is buffer solution ?

A buffer is a solution that can withstand changes in pH due to the addition of acidic or basic components. It can neutralize small amounts of added acids or bases and keep the pH of the solution relatively stable. This is important for processes and reactions that require a specific and stable pH range. Buffers have a working pH range and capacity that determines how much acid/base they can neutralize before their pH changes, and how much they change. Both of the two components (conjugate acid and conjugate base) are present in significant amounts and can neutralize small amounts of other acids and bases (in the form of H3O+ and OH-), thus withstanding pH changes. increase. Added to the solution. To illustrate this effect, we can consider a simple example of a buffer made from hydrofluoric acid (HF) and sodium fluoride (NaF). Hydrofluoric acid is a weak acid due to the strong attraction between the relatively small F ions and solvated protons (H3O+), which prevents complete dissociation in water.

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The word equation "Iron + Oxygen → Iron (III) oxide" represents the reaction between iron and oxygen to produce iron (III) oxide, which is commonly known as rust.

The word equation for the chemical reaction between iron and oxygen to form iron (III) oxide is as follows:

Iron + Oxygen → Iron (III) oxide

Let's break down this word equation step by step:

1. Iron: This is the reactant on the left side of the equation. It represents the element iron, which is a metal.

2. Oxygen: This is also a reactant, also on the left side of the equation. Oxygen is an element that exists in the form of a gas. It is necessary for the reaction to occur.

3. →: This arrow represents the direction of the reaction. It shows that the reactants on the left side are transforming into the products on the right side.

4. Iron (III) oxide: This is the product on the right side of the equation. It is the compound formed when iron and oxygen react. Iron (III) oxide is also known as rust. The Roman numeral (III) indicates that iron is in its +3 oxidation state in this compound.
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Making both reactants in excess and the concentration of Fe(SCN)* can be determined, Making FeSt in excess and SCN as the limiting reactant and the concentration of Fe(SCN)* will be equal to the concenation of SCN.

A reagent, sometimes known as an analytical reagent, in chemistry is a substance or compound supplied to a system to either initiate a chemical reaction or test whether one happens. Although the terms "reactant" and "reagent" are not frequently used interchangeably, "reactant" refers to a material that is consumed during a chemical reaction. The anion [SCN] is thiocyanate. Thiocyanic acid's conjugate base is it. The colorless compounds potassium thiocyanate and sodium thiocyanate are examples of common derivatives. In the past, pyrotechnics employed mercury(II) thiocyanate. Thiocyanic acid is a hydracid, which is cyanic acid in which the oxygen is substituted by a sulfur atom. SCN is a tiny, very acidic [1] pseudohalide thiolate.

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Explanation:

pH= –log¹⁰[H+]

0.50= –log¹⁰[H+]

log¹⁰[H+]=0.50

take the antilog of 0.50

[H+]= 3.16moldm-³

Explanation:

External force of 220 applied on a pistan of a cylinder containg 1.25 ammonia gas move 10cm as shown in diagram below

Answer:

Option B

Explanation:

Abiotic components are non living such as temperature, climate, rainfall, soil composition, wind, sunlight etc. While biotic components are living such as  food, availability of mates, disease, and predators.

Here in this case, only option B represents a scenario where the unavailability of grass represents a biotic component

The crystals of igneous rock are formed due to different chemical composition, size and structure of the rocks

The crystals of an igneous rock are used to classify its own because the crystals of igneous rock are formed due to different chemical composition as well as size and structure. Igneous rocks are the type of rocks which are formed when magma cools and change into solid state.

They are classified on the basis of grain size, silica content, and silica saturation. The igneous rock is depend on the rate of cooling i.e. slow cooling causes the formation of large crystals whereas fast cooling produces small crystals. The igneous rocks are classified according to their chemical composition.

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Answer:

0 electrons in outermost shell as it is a noble gas

Answer:

the valency of argon is 0

since it has complete valence shells , so it doesn't react with any other element

The solution has a pH which is approximately 2.06

To calculate the pH of a solution prepared by mixing 0.0630 mol of chloroacetic acid and 0.0290 mol of sodium chloroacetate in 1.00 L of water, you'll need to use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

First, you need to find the pKa of chloroacetic acid, which is 2.85.

Next, calculate the concentrations of the acid (HA) and its conjugate base (A-) in the solution:

[HA] = (0.0630 mol) / (1.00 L) = 0.0630 M
[A-] = (0.0290 mol) / (1.00 L) = 0.0290 M

Now, substitute these values into the Henderson-Hasselbalch equation:

pH = 2.85 + log(0.0290/0.0630)

Calculate the pH:

pH ≈ 2.85 + (-0.79) = 2.06

Therefore, the pH of the solution is approximately 2.06.

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