at 25c, a 0.0100m ammonia solution is 4.1% ionized. calculate (a) the concentration of the oh- and nh4+ ions, (b) the concentration of molecular ammonia, (c) the ionization constant of aqueous ammonia, (d) [oh-] after 0.0090mol of nh4cl is added to 1l of the above solution
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Runoff includes; rivers, streams, creeks, and lakes.

Runoff refers to water that flows on the surface of the ground. Run off usually occurs after a heavy storm and may be responsible for some cases of flooding.

Runoff flows into water bodies such as rivers, streams, creeks, and lakes. These are water bodies that receives runoff water.

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Answer: all of these

Answer:

By adding heat energy It became a gas Explanation:The molecules moving about another is a clear indicator that the substance is a liquid. In a liquid, the molecules stick together and move about one another. When the scientist increase the speed of the of substance, the kinetic energy increases. if this increase causes a phase change, then the substance becomes a gas. So, by adding heat energy a substance becomes gaseous if it is a liquid already.

Explanation:

Answer:

carbon atom is used to determine the amt of particles in a mole

Answer: Industrial processes including mining and manufacturing historically have been leading causes of soil pollution. Industrial areas typically have much higher levels of trace elements and organic contaminants. This is due to intentional and unintentional releases from industrial processes directly into the environment, including to the soil, adjacent water bodies, and the atmosphere.

Explanation:

Answer:

That Jupiter's gravitational force is much stronger than Earth's gravitational force.

Answer:

Maybe (C)

...............

Answer:

A. plates move in faster

Explanation:

The convergence is a process where both the plates tend to move in closer as one plate overrides the other and the formation of a Himalayas is described as a range that formed by the movement of the sediments that were bought by the Tethys sea. By the collision of the Indian and the Eurasian plate.

i hope this helps

Answer:

A. 488.31 mL.

B. 67.22 mL.

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 250 mL

Initial pressure (P₁) = 752 mm Hg

A. Determination of the new volume when the pressure is lowered to 385 mmHg.

Initial volume (V₁) = 250 mL

Initial pressure (P₁) = 752 mm Hg

Final pressure (P₂) = 385 mmHg

Final volume (V₂) =?

P₁V₁ = P₂V₂

752 × 250 = 385 × V₂

188000 = 385 × V₂

Divide both side by 385

V₂ = 188000 / 385

V₂ = 488.31 mL

Thus, the new volume of the gas is 488.31 mL

B. Determination of the new volume of the gas when the pressure is increased to 3.68 atm.

Initial volume (V₁) = 250 mL

Initial pressure (P₁) = 752 mm Hg

Final pressure (P₂) = 3.68 atm.

Final volume (V₂) =?

Next, we shall convert 3.68 atm to mmHg. This can be obtained as follow:

1 atm = 760 mmHg

Therefore,

3.68 atm = 3.68 atm × 760 mmHg / 1 atm

3.68 atm = 2796.8 mmHg

Thus, 3.68 atm is equivalent to 2796.8 mmHg.

Finally, we shall determine the new volume of the gas as follow:

Initial volume (V₁) = 250 mL

Initial pressure (P₁) = 752 mm Hg

Final pressure (P₂) = 2796.8 mmHg.

Final volume (V₂) =?

P₁V₁ = P₂V₂

752 × 250 = 2796.8 × V₂

188000 = 2796.8 × V₂

Divide both side by 2796.8

V₂ = 188000 / 2796.8

V₂ = 67.22 mL

Thus, the new volume of the gas is 67.22 mL

We frequently observe kids playing with polythene bags filled with water that have little holes drilled into them at various locations so they can sprinkle water on other kids. Through this experiment, we can say that pressure acts in all directions in liquids.

Since both liquids and gases may flow, they are both referred to as fluids. Fluids under rest pressure behave uniformly in all directions.

Weather forecasts can be made using barometers. They track the evolution of atmospheric pressure throughout time.

On weather forecast maps, pressure variations appear as an isobar pattern. Predictions are made using these changes in pressure, and they are fairly accurate when combined with wind observations.

As you go away from a liquid's surface, pressure rises. for instance: A bucket has three holes that are all the same size. Since there is more pressure at the bucket's bottom, the water spills out more forcefully. Dams are thicker at the bottom for this reason.

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Answer:

heat energy

Explanation:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

Answer:

7.77×10^4=77,700

Explanation:

10^4 is 10,000, since there are 4 zeros in 10,000, move the decimal in 7.77 4 spaces to the right.

1: 77.7

2: 777.

3: 7,770.

4 77,700.

Side note: This trick ONLY works with +/-10^x value. If the value is positive the decimal moves to the right, and if the value is negative the decimal moves to the left.

Example: 7.77×(-10)^3=.00777

(-10)×(-10)×(-10)=(-10)^3= -1000

1: .777

2: .0777

3: .00777

If this scenario is used as a model for genetic information, then the statement 'the manual is a chromosome' is correct. A chromosome contains linear arrangements of genes.

A chromosome can be considered as a long nucleotide sequence that contains linear arrangements of genes.

In a chromosome, each DNA strand contains a nucleotide sequence that may encode proteins (i.e., different genes).

A chromosome can then be considered as manual containing instructions (genes) for how to build a variety of structures using a set of interlocking bricks (nucleotides).

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Answer:

the manual is a chromosome

Explanation:

Answer:

I believe its B

Explanation:

Answer:

B. Measure 114 mL of the 1.75 M solution, and dilute it to 2.00 L.

Answer:

2) 110 g P2O3

Explanation:

If the green box is in the denominator of a fraction and represents the molar mass of P2O3, then the correct answer choice would be 2) 110 g P2O3. Here’s how you can use this value to solve the problem:

The balanced chemical equation for the reaction between P2O3 and H2O to produce H3PO3 is: P2O3 + 3H2O → 2H3PO3.

From this equation, we can see that 1 mole of P2O3 reacts with 3 moles of H2O to produce 2 moles of H3PO3. So the number of moles of H3PO3 produced is twice the number of moles of P2O3 that reacted.

The molar mass of P2O3 is approximately 110 g/mol. So 93.2 g of P2O3 is equivalent to (93.2 g) / (110 g/mol) = 0.848 mol of P2O3.

Since the number of moles of H3PO3 produced is twice the number of moles of P2O3 that reacted, the number of moles of H3PO3 produced is 0.848 mol × 2 = 1.696 mol.

The molar mass of H3PO3 is (3 × 1.01 g/mol) + (1 × 30.97 g/mol) + (3 × 16.00 g/mol) = 81.99 g/mol. So 1.696 mol of H3PO3 is equivalent to (1.696 mol) × (81.99 g/mol) = 139 g of H3PO3.

So the complete reaction of 93.2 g P2O3 would produce approximately 139 g of H3PO3.

Question: ) ✨ Illustrate the structural and functional difference between glucose and fructose?

Answer: We know that Glucose is six membered ring, while fructose is a five-membered ring. Both rings contain an oxygen atom.Glucose and fructose are structural isomers: have the same chemical formula but have different arrangement of atoms. While glucose has aldose sugar- carbonyl group at the end of the chain, fructose has ketose sugar- carbonyl group in an internal of the chain (specifically, at the second carbon.

Hope this helps <3

Explanation:

Answer:

hey what up

Explanation:

The equilibrium constant shows the extent of dissolution of a substance in solution. The molar solubility of the compound here is 1.2 * 10^-8 M.

The solubility product is the equilibrium constant that shows the extent to which a substnace is dissolved in soution.

Now let us set up the ICE table as shown;

               Cr(OH)3 (s) <-> Cr^3+ (aq) + 3OH^- (aq)

I                                           0                 0

C                                          +x               +3x

E                                          x                   3x

Ksp = [Cr^3+] [OH^- ]^3

6.3x10^-31 = [x] [3x]^3

6.3x10^-31 = 27x^4

x = 4√6.3x10^-31 /27

x = 1.2 * 10^-8 M

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Answer:

Solids cant react to each other because they are the same room temperature

Answer:

A is the correct answer.

Explanation:

A mixture of solids is the correct answer.

To solve this problem, I'll need some additional information related to the molar mass of butane (C4H10). Please provide the molar mass of butane so that I can proceed with the calculations.

The pressure of the environment affects the liquid's boiling point. The boiling point of the liquid is higher when it is under high pressure than when it is under normal atmospheric pressure. For a given pressure, various liquids have different boiling points.

The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. This temperature causes the liquid to become a vapour.

The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapour all affect its boiling point.

We know that change in temperature of a system is given by the following formula:

Initial boiling point (T₁) = 80.1 °C

ΔT = T₂ - T₁

2.25 = T₂ - 80.1

T₂ = 82.35  °C

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Answer:

82.35

Explanation:

acellus

Approximately 766.08 grams of oxygen are required to completely react with 240g of C₂H₆.

To determine the amount of oxygen required to completely react with 240g of C₂H₆ (ethane), we need to set up a balanced chemical equation for the combustion of ethane.

The balanced equation for the combustion of ethane is as follows:

C₂H₆ + O₂ → CO₂ + H₂O

From the balanced equation, we can see that the stoichiometric ratio between C₂H₆ and O₂ is 1:3. This means that for every one mole of C₂H₆, three moles of O₂ are required for complete combustion.

To calculate the amount of oxygen required, we need to convert the given mass of C₂H₆ to moles using its molar mass, and then use the stoichiometric ratio to determine the moles of O₂ required. Finally, we can convert the moles of O₂ back to grams using the molar mass of oxygen.

The molar mass of C₂H₆ is calculated as follows:

(2 x atomic mass of carbon) + (6 x atomic mass of hydrogen)

(2 x 12.01 g/mol) + (6 x 1.01 g/mol) = 30.07 g/mol

Now, we can proceed with the calculation:

Calculate the moles of C₂H₆:

moles of C₂H₆ = mass of C₂H₆ / molar mass of C₂H₆

moles of C₂H₆ = 240 g / 30.07 g/mol ≈ 7.98 mol

Determine the moles of O₂ using the stoichiometric ratio:

moles of O₂ = moles of C₂H₆ x (3 moles of O₂ / 1 mole of C₂H₆)

moles of O₂ = 7.98 mol x 3 ≈ 23.94 mol

Convert moles of O₂ to grams:

mass of O₂ = moles of O₂ x molar mass of O₂

mass of O₂ = 23.94 mol x 32.00 g/mol = 766.08 g

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The initial concentration of HCl is 0.125 M.

To calculate the initial concentration of HCl, we can use the balanced chemical equation for the reaction between HCl and NaOH:

HCl + NaOH -> NaCl + H2O

From the balanced equation, we can see that the stoichiometry of the reaction is 1:1. This means that for every mole of NaOH used, one mole of HCl is consumed.

First, let's calculate the number of moles of NaOH used:

moles of NaOH = M x V = 0.1138 M x 0.02746 L = 0.003125 moles

Since the stoichiometry of the reaction is 1:1, the number of moles of HCl consumed is also 0.003125 moles.

Next, let's calculate the initial concentration of HCl:

initial moles of HCl = final moles of HCl = 0.003125 moles

the initial concentration of HCl = initial moles of HCl / initial volume of HCl

We are given the initial volume of HCl as 25.00 mL, but we need to convert it to liters:

initial volume of HCl = 25.00 mL = 0.02500 L

Substituting the values we have:

initial concentration of HCl = 0.003125 moles / 0.02500 L = 0.125 M

Therefore, the initial concentration of HCl is 0.125 M.

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Answer:

43.964

Explanation:

i think i used a calculator so let me know if its wrong

Answer:

39.49 kg

Explanation:

:)

Answer:

Linear molecule is a molecule in which atoms are deployed in a straight line (under 180° angle). Molecules with an linear electron pair geometries have sp hybridization at the central atom. An example of linear electron pair and molecular geometry are carbon dioxide (O=C=O) and beryllium hydride BeH2.

Explanation:

In 4.38 × 10^21 molecules of water, there are approximately 0.073 moles.

To calculate the number of moles, we can use Avogadro's number, which states that 1 mole of a substance contains 6.022 × 10^23 molecules. So, by dividing the given number of molecules (4.38 × 10^21) by Avogadro's number, we can find the number of moles.

Now, let's explain the process in detail. Avogadro's number is a constant that represents the number of particles (atoms, molecules, etc.) in one mole of a substance. It is approximately 6.022 × 10^23. Therefore, if we divide the given number of molecules by Avogadro's number, we can determine the number of moles.

In this case, we divide 4.38 × 10^21 molecules by 6.022 × 10^23 molecules/mole, resulting in approximately 0.073 moles.

Significant figures play an important role in reporting the answer. The given number of molecules has three significant figures (4, 3, and 8), so our answer should be reported with three significant figures as well. Therefore, the number of moles is approximately 0.073.

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when hydrogen and oxygen combine then they form water as product

also in neutralization reaction water form as product

hope it helps

Water is always a product in a type of chemical reaction called a neutralization reaction.

A reaction is a process that involves the transformation of one or more substances into one or more different substances.

Neutralization reaction is type of reaction occurs when an acid and a base react together to form a salt and water. The general equation for a neutralization reaction is:

\(\rm acid + base \rightarrow salt + water\)

In this type of reaction, the hydrogen ions (\(\rm H^+\)) from the acid combine with the hydroxide ions (\(\rm OH^-\)) from the base to form water (\(\rm H_2O\)). The remaining ions from the acid and the base combine to form a salt.

Therefore, water is always a product in a neutralization reaction, which occurs when an acid and a base react together to form a salt and water.

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Based on the given reaction, the acid-base pairs in this reaction are:

An acid-base pair refers to a set of two chemical species that are related through the transfer of a proton (H+ ion) during a chemical reaction.

One species acts as an acid by donating a proton, while the other acts as a base by accepting that proton.

In the given reaction:

HCO₃⁻ (aq) + NH₃ (aq) → NH₄⁺ + CO₃²⁻

An acid-base pair can be identified as follows:

HCO₃⁻ (bicarbonate ion) can act as an acid by donating a proton (H⁺), becoming CO₃⁻.

NH₃ (ammonia) can act as a base by accepting a proton (H⁺), becoming NH₄⁺ (ammonium ion).

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Answer:The respiratory system

Explanation:

is the network of organs and tissues that help you breathe. It includes your airways, lungs, and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.

Respiratory  system moves oxygen into the blood and removes carbon dioxide from the blood.

Respiratory  system is  defined as a biological system which consists of specific organs structures which function for gaseous exchange in plants as well as animals.

The physiology of the system varies greatly depending on size of organism , its environment and evolution. In animals residing on land, the respiratory  organs are the lungs . In lungs gas exchange takes place through the alveoli which are small air sacs . They have rich blood supply  which brings  air in close contact with the blood.

In aquatic animals, respiratory system consists of gills .Gas exchange takes place through gills  which consist of thin or very fine filaments and lamellae.  In amphibians respiration takes place  through skin.

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