in ionic compounds , each atom becomes ____ with a noble gas ?

As per the given balanced reaction, 2 moles of silver gives 1 mole of the product silver sulfide. Hence, 0.04 moles will given 0.02 moles of silver sulfide.

The theoretical yield of a reaction is the amount of product obtained based on the balanced chemical equation of the reaction. However, the actual yield might vary from the the theoretical value.

The given reaction of Ag and H₂S shows that, two  moles of Ag produce one mole of the product silver sulfide.

Number of moles of silver sulfide produce by 0.04 moles of Ag is  then half of this number that is 0.02 moles of Ag₂S.

Therefore, 0.0 moles of Ag will give 0.02 moles of silver sulfide.  Using the same way, we can determine the yield of products in any reaction.

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Answer:

a molecule is the smallest particle of a substance that can normally exist independenty

Answer:

B is the answer. 2.00 x 10^5 ppm

Explanation:

Right on edmentum

The ratio of ions in the given ionic compound, 2 Na₃PO₄ is 6 : 2.

Ions are substances formed when atoms of elements gain or lose or lose electrons.

In some instances, the group of atoms may come together and react as one unit and these are called radicals.

Ionic compounds are formed when two oppositely charged ions are held together by electrostatic forces of attraction.

The ions in the given ionic compound, 2 moles of Na₃PO₄, are as follows;

2 * 3 moles of Na⁺ = 6 moles

2 * 1 mole of PO₄ = 2 moles

The ratio of ions = 6 : 2

The ratio of ions = 3 : 1

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Answer:

erosion can be reduced by planting trees and other plants

Answer:

A

Explanation:

Answer:

moles CO₂ produced from combustion of 7.9 mole of C₅H₁₂ = 39.5 moles CO₂

Explanation:

              C₅H₁₂      +   8O₂      =>      6H₂O      +      5CO₂

Given:   7.9moles    excess            _____            ? moles

From Equation, 1 mole C₅H₁₂ =============>  5 moles CO₂

Given            7.9 mole C₅H₁₂  =============>         X

Solving for 'X' using ratio and proportion ...

1mole C₅H₁₂ / 7.9mole C₅H₁₂ =  5mole CO₂ / X

=> X = 5 mole CO₂ x  7.9mole C₅H₁₂ / 1mole C₅H₁₂  =  39.5 moles CO₂

≅ 40 moles CO₂ (2 sig. figs.)

Answer:

The concentration of the copper (II) sulfate solution is 2.06 * 10^2 μmol/L or 2.06 * 10^2 μM

Explanation:

The concentration of a solution is the amount of solute dissolved in a given volume of solution. In this case, the concentration of the copper(II) sulfate solution in micromoles per liter (symbol ) is the number of micromoles of copper(II) sulfate dissolved in each liter of solution. To calculate the micromoles of copper(II) sulfate dissolved in each liter of solution you must divide the total micromoles of solute by the number of liters of solution.

Here's that idea written as a formula: c= n/V

where c stands for concentration, n stands for the total micromoles of copper (II) sulfate and V stands for the total volume of the solution.

You're not given the volume of the solution in liters, but rather in milliliters. You can convert milliliters to liters with a unit ratio: V= 150. mL * 10^-3 L/ 1 mL = 0.150 L

Next, plug in μmol and liters into the formula to divide the total micromoles of solute by the number of liters of solution: c= 31 μmol/0.150 L = 206.66 μmol/L

Convert this number into scientific notation: 2.06 * 10^2 μmol/L or 2.06 * 10^2 μM

Answer: 2.4e+24

Explanation:

It could just as easily have been selected to be 1/24th of the mass of one atom of a carbon atom, or 1/10th the mass of a calcium atom, A sample of 250 grams is equivalent to 1.58 moles of potassium permanganate.

Answer

An atom wants to form an octet or duet because an atom always wants to be in the most stable form. For any atom, stability is achieved by following the octet rule or duet rule, which is to say all atoms (with a few exceptions) want 8 electrons (octet) or 2 electrons (duet) in their outermost electron shell just like noble gases.

Moles of HCL present in the reaction is 0.899 moles

The mole is the unit of substance that is equal to the number of atoms in 0.012 kilogrammes of carbon 12 and is represented by the sign "mol".

chemical reaction, the transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.

Use the following formula to calculate the moles of each reactant present at the start of the reaction:

Molar mass divided by mass equals a mole.

The molar mass of HCl is 36.461 g/mol (1.008 g/mol for H and 35.453 g/mol for Cl), while the molar mass of \(Ca(OH)_2\) is 74.093 g/mol (40.078 g/mol for Ca, plus 215.999 g/mol for O and 21.008 g/mol for H).

Consequently, the amount of \(Ca(OH)_2\) in the starting moles of the reaction is:

\(Ca(OH)_2\) moles are equal to 48.5 g / 74.093 g/mol, or 0.654 moles.

At the start of the reaction, there are: moles of HCl present.

32.8 g of HCl divided by 36.461 g/mol yields 0.899 moles.

Since we have only 0.899 moles of HCl present, it is the limiting reactant. This means that all of the \(Ca(OH)_2\) will react, and some of the HCl will be left over.

To convert this to grams, we use the formula:

mass = moles x molar mass

The molar mass of \(CaCl_2\) is 110.984 g/mol (40.078 g/mol for Ca and 2*35.453 g/mol for Cl).

Therefore, the mass of \(CaCl_2\) produced is:

mass of \(CaCl_2\) = 0.654 moles x 110.984 g/mol = 72.6 g

So, 48.5 g of \(Ca(OH)_2\) and 32.8 g of HCl will produce 72.6 g of \(CaCl_2\) and 2 moles of \(H_2O\).

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Answer:

ammonia is a common base

Answer:

cornea,Jens and pupil

tma Po yan

Explanation:

here's the answer to your question

Decomposition of Sulfurous Acid (H₂SO₃):

H₂SO₃ → H₂O + SO₂

In this reaction, sulfurous acid decomposes into water (H₂O) and sulfur dioxide (SO₂).

The decomposition of carbonic acid (H₂CO₃) and sulfurous acid (H₂SO₃) can be represented by the following balanced chemical equations:

Decomposition of Carbonic Acid (H₂CO₃):

H₂CO₃ → H₂O + CO₂

In this reaction, carbonic acid decomposes into water (H₂O) and carbon dioxide (CO₂).

Decomposition of Sulfurous Acid (H₂SO₃):

H₂SO₃ → H₂O + SO₂

In this reaction, sulfurous acid decomposes into water (H₂O) and sulfur dioxide (SO₂).

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Answer:

chu papi

Explanation:

Answer:

The study of chemistry is about the learning of chemist arts

Answer

Explanation

Given that:

The normal freezing point of the solvent X, T₁(solvent) = -6.70 °C

The freezing point of the solution, T₂ = -10.9 °C

The freezing point depression constant, Kf = 2.22 °C.kg/-mo

Mass of solvent X = 500.0 g = 0.50 kg

What to find:

To calculate the mass of C₂H5NO₂ that was dissolved.

Step-by-step solution:

Step 1: Calculate the freezing point depression, ΔTf.

The freezing point depression, (ΔTf) can be calculated using:

Step 2: Calculate the molal concentration of the solution.

The molality of the solution can be determined using:

Where m is the molality of the solution.

Putting ΔTf = 4.2 °C, Kf = 2.22 °C.kg/mol, the molality of the solution is:

Step 3: Determine the mass of C₂H5NO₂ that was dissolved.

The mass of C₂H5NO₂ that was dissolved can be calculated using the formula for molality below:

Molality = m = 1.891891892 mol/kg, kilogram of solvent = mass of X = 0.5 kg.

So,

If I were given a food sample in powdered form I would determine the food class of the food sample by adding some water to it. By adding water to the Powder the nature of the the food can be easily determined based on the solubility of the Powder in water.

A mixture of oxygen and chlorine gas with a partial pressure of 3040 mmHg and 1.63 atm respectively will have a total pressure of 5.55 atm.

According to Dalton's law of partial pressure, when a gas contains a mixture of gases, the total pressure of the gas mixture is the sum of the individual gas pressure.

This law can be mathematically expressed as:

P (total) = P ₁ + P ₂ + P ₃ + ......

Where P is the pressure of gas and 1, 2, 3, etc., represent the gases respectively.

In this case, the pressure of oxygen is 3040 mmHg. We first need to convert this to atm.

1 mmHg = 0.0013 atm

Thus, 3040 mmHG = 3040 x 0.0013

                                = 3.952 atm

The pressure of chlorine is 1.63 atm. Thus, the total pressure of the gas mixture would be:

P (total) = P oxygen + P chlorine

             = 3.92 + 1.63

              = 5.55 atm

In other words, the total pressure inside the container in atm would be 5.55 atm.

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Answer:

The definition has been defined throughout the clarification segment below, as per the provided case.

Explanation:

Polypeptides were essential amino acids although therefore realize that those acids become charged individually, provide various R groups but have specific isoelectric positions as well.

The polypeptides could be divided by analysis of multiple isoelectric points including fulfilling the following, even though a protein always at the isoelectric point seems to have the end up losing money.

Answer:

a pressure of 10 Nm -2 is equal to ?​

1 atmosphere

Explanation:

A pressure of 10 N/m² is equal to 10 Pa and 9.86x10⁻⁵ atm.

Pressure (P) is the measure of the perpendicular force (F) applied to an object's surface area (A):

\( P = \frac{F}{A} \)                          

Hence, the unit of the pressure is Newton per square meter (N/m²), which is defined as Pascal (Pa).

\( 1 Pa = 1 N/m^{2} \)

Also, we have that 1 atm is equal to 101325 Pa, so:

\( P = 1 Pa*\frac{1 atm}{101325 Pa} =9.86 \cdot 10^{-6} atm \)

So, in a pressure of 10 N/m² we have:

\( P = 10 N/m^{2} = 10 Pa = 9.86 \cdot 10^{-5} atm \)

Therefore, a pressure of 10 N/m² is equal to 10 Pa and 9.86x10⁻⁵ atm.

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I hope it helps you!        

For this question we are given:

T2 = 11.4 degrees celsius

V1 = 14.8 cm3

V2=19.9 cm3

We want to know T1. So we need to use Charles Law:

Now if we re-arrange:

So T1 = (11.4 x14.8)/19.9

T1 = 8.48 degrees celsius

Therefore, at the equivalence point, the pH is very high (approaching infinity), indicating a basic solution.

Methylamine (CH3NH2) is a weak base, and HCl is a strong acid.

CH3NH2 + HCl → CH3NH3+ + Cl-

At the equivalence point, the moles of HCl added will be equal to the moles of methylamine present in the solution.

CH3NH3+ + H2O → CH3NH2 + H3O+

The Kb of methylamine is given as 5.0 × 10^-4. To find the pKb, we can use the equation:

pKb = -log(Kb)

pKb = -log(5.0 × 10^-4)

pKb = 3.3

Since pKb + pKa = 14 (for any conjugate acid-base pair), we can find the pKa of the methylammonium ion:

pKa = 14 - pKb

pKa = 14 - 3.3

pKa = 10.7

Now, we can use the Henderson-Hasselbalch equation to find the pH at the equivalence point:

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

where [A-] is the concentration of the methylammonium ion and [HA] is the concentration of the methylamine.

At the equivalence point, we know that the moles of HCl added will be equal to the moles of methylamine initially present. Since the initial concentration of methylamine is 0.160 M, the concentration of the methylammonium ion will also be 0.160 M. Therefore:

[A-] = [CH3NH3+] = 0.160 M

[HA] = [CH3NH2] = 0.000 M (all of the methylamine has reacted)

Substituting into the Henderson-Hasselbalch equation:

pH = 10.7 + log(0.160/0.000)

pH = 10.7 + log(infinity) (since the concentration of methylamine has become negligible)

pH = 10.7 + infinity

pH = infinity

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Answer:HNO3 + NaOH = NaNO3 + H2O is a neutralization reaction (also a double displacement reaction). The strong acid (HNO3) and strong base react to produce a salt (NaNO3) and water (H2O).Type of Chemical Reaction: For this reaction we have a neutralization reaction. Balancing Strategies: Here is a neutralization reaction. The HNO3 and NaOH combined and form a salt and water.

hope this helps have a nice night ❤️

Explanation:

Answer:

Row 2 = 4.07

Row 3 = 6.03

Explanation:

The prompt gives you the correct equation for calculating the average. For this question, it may make more sense to write the equation as follows:

Average Time = (Time Trial 1 + Time Trial 2 + Time Trial 3) / # of Trials

So, for a distance of 20 cm, the average time is...

Average Time = (4.11 + 4.03 + 4.06) / 3

                        = 12.2 / 3

                        = 4.07 s

For a distance of 30 cm, the average time is...

Average Time = (6.07 + 5.99 + 6.03) / 3

                        = 18.09 / 3

                        = 6.03 s

Answer:

C) Integumentary, nervous, muscular

Explanation:

When a human body touches a hot stove , our sense organ which is integumen first of all receives the impulse of heat . The impulse is transformed into electrical signal which is transmitted to brain which is a part of nervous system . Then brain processes it and command signal is sent to muscle of hand to move it away from that place . Hence the order is

Integumentary, nervous, muscular .

Answer:

methane

Explanation: methane is obtained from the decaying of flora and fauna mostlyunder damp

The equilibrium constant at this temperature is Kc= 4.17 x 10⁻⁶.

Since the equilibrium constant depends on the equilibrium concentration of both the reactants and the products of the chemical reaction.

Balanced reaction equation

2CH₄(g)⇌C₂H₂(g)+3H₂(g)

The initial concentration of the CH₄ = 0.093 M

The equilibrium concentration of the H = 0.017 M

Equilibrium constant = ?

Let's make the ice table

2CH₄(g) ⇌ C₂H₂(g) + 3H₂(g)

0.093 M 0 0

-2x +x +3x

0.093-2x x 0.017 M

3x = 0.017 M

Therefore, x =0.017 M /3 = 0.00567 M

Therefore, the equilibrium concentration of CH₄ =

0.093 M – 2x = 0.093 M – (2 x 0.00567 M) = 0.0817 M

Equilibrium concentration of the C₂H₄ = x = 0.00567 M

Let's write the equilibrium constant expression

Kc= [C₂H₄[H2]³/[CH₄]²

Let's put the values in the formula

Kc= [0.00567][0.017]³/[0.0817]²

Kc= 4.17 x 10⁻⁶

Therefore, the equilibrium constant is 4.17 x 10⁻⁶.

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Answer:

Explanation:Because of the delocalised electrons exposed above and below the plane of the rest of the molecule, benzene is obviously going to be highly attractive to electrophiles - species which seek after electron rich areas in other molecules.

Answer:

Benzene has a pi electron system that is electron rich.

Electrophiles are molecules that are attracted to electron rich molecules as they are electron deficient in order to form a more stable complex.

Hence, as benzene is electron rich, electrophiles will be attracted to it.

Answer:

its b

Explanation:

just did the test on A P E X

If the isotope models are accurate, One shows 8 neutrons, and one shows 9. Therefore, the correct option is option B.

A chemical element's isotope is one of more than one species of atoms that share the same atomic number, spot on the periodic table, and almost identical chemical activity, but differ in atomic mass and physical characteristics. There are a number of isotopes for each chemical element.

The first step in identifying and labelling an atom is to count the protons within its nucleus. Usually, this nuclear number is denoted by the letter Z. The fact that all atoms possessing the same number of electrons have essentially equal chemical characteristics lends the atomic number its enormous significance. If the isotope models are accurate, One shows 8 neutrons, and one shows 9.

Therefore, the correct option is option B. If the isotope models are accurate, One shows 8 neutrons, and one shows 9.

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