If it is found that 60. 0 liters of carbon dioxide gas is produced at 298 K and 1. 18 atm. How much energy was also produced?


KJ (3 sig figs)

It would be Ionic Compounds.

Answer:

The water tastes sweet, and it usually appears to be cloudy or not clear.

Explanation:

If nothing dissolves into the water, then it should be clear.

Answer:You can tell if the sugar is still there by boiling off the water and leaving the sugar behind in the container. Sugar is a solid, and therefore cannot evaporate, so when the water reaches boiling point, it will evaporate at a quicker rate than before (water evaporates at any temperature in liquid form; just not enough to be noticeable) and leave the container to become water vapour

Explanation: If you stir a spoonful of sugar into hot water, the sugar will dissolve in the hot water. When sugar or another substance is dissolved in water, it disappears from view and forms a homogeneous mixture with the water, also called a solution.

Answer:

I would say:

C. It shifts right and [CH3COO-] increases.

Explanation:

I am uncertain, but since NaOH is basic I think it should shift right.

hope this helps though

In the flame test, the metal is put under the flame. The flame turns in different colors based on which the element is identified.

A flame test can be described as an analytical procedure used in chemistry to detect the presence of elements, primarily metal ions, based on the characteristic emission spectrum of each element. The color of flames depends on temperature and oxygen.

This test involves introducing a sample of the compound to a hot, non-luminous flame, then observing the color of the flame that results. Sample atoms evaporate when they are hot, they release light when being in flame.

Bulk samples can emit light too, but their light is not good for analysis. Bulk samples emit light with HCl to remove traces of previous analytes.

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Answer:

dam aye someone give this person a medal

Explanation:

Molar mass, which is measured in grammes per mole units, is the mass of one mole of a substance. The unknown compound's molar mass is 226.2 g/mol plus the molar masses of any additional elements it may contain.

We can first calculate the mass of the oxygen in one mole of the chemical to obtain the molar mass of the unknown compound: The chemical has 35.53 g of oxygen per mole. Oxygen has an atomic mass of 16.00 g/mol. As a result, there are 2.2206 moles of oxygen in a mole of the molecule, or 35.53 g / 16.00 g/mol. As there are 4 atoms per molecule, the following formula can be used to determine the molar mass of the unknown compound: Molar mass = (35.53 g + molar mass of other elements) / 2.2206 mol * 4 atoms/molecule. Molar mass = (35.53 g / 2.2206 mol * 4) + molar mass of other elements is the result of solving for the molar mass of the unidentified substance. Molar mass is equal to 226.2 g/mol plus the molar mass of other elements. Therefore, The unknown compound's molar mass is 226.2 g/mol plus the molar masses of any additional elements it may contain.

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Answer:

there are 4 sulfur atom.

Throwing isn't classified as a force so I'd say C but it is a force just not a type

Answer:

C- throwing

Explanation:

You physically have to throw it while the other forces act on their own.

Answer:

54 days

Explanation:

We have to use the formula;

0.693/t1/2 =2.303/t log Ao/A

Where;

t1/2= half-life of phosphorus-32= 14.3 days

t= time taken for the activity to fall to 7.34% of its original value

Ao=initial activity of phosphorus-32

A= activity of phosphorus-32 after a time t

Note that;

A=0.0734Ao (the activity of the sample decreased to 7.34% of the activity of the original sample)

Substituting values;

0.693/14.3 = 2.303/t log Ao/0.0734Ao

0.693/14.3 = 2.303/t log 1/0.0734

0.693/14.3 = 2.6/t

0.048=2.6/t

t= 2.6/0.048

t= 54 days

Answer: Different ways of distributing energy have different short-term and long-term environmental consequences.

Explanation:

Due to the big issue of some energy sources being non-renewable and some being renewable, lawmakers have a lot on their plate. Non-renewable sources of energy are harmful to the environment, but they work the best. Renewable sources of energy cost a lot and work, but they require a lot of effort.

The car speed : 204.545 miles/h

Given

The speed of the car = 300 ft/s

Required

Speed in miles/hour

Solution

In converting units we must determine the conversion factor

Conversion factors for miles and hour :

1 mile = 5,280 feet

1 ft = 0,000189394 mile

1 hours = 3,600 s

So for 300 ft/s to miles/hour :

= 300 ft/s x 3600 s/hr x 0,000189394 mile/ft

= 204.545 miles/h

To form one formula unit of Al2O3, a total of 12 electrons (6 from aluminum and 6 from oxygen) must be transferred.

The compound Al2O3, commonly known as aluminum oxide, is formed when two aluminum atoms and three oxygen atoms bond. To determine the number of total electrons that must be transferred to form one formula unit of Al2O3, we first need to find the number of electrons that are present in one formula unit of Al2O3.

Aluminum has an atomic number of 13, which means it has 13 protons and 13 electrons in a neutral atom. Each aluminum atom in Al2O3 contributes 3 electrons, and since there are two aluminum atoms in one formula unit of Al2O3, the total number of electrons contributed by aluminum atoms is 6.

Oxygen has an atomic number of 8, which means it has 8 protons and 8 electrons in a neutral atom. Each oxygen atom in Al2O3 contributes 2 electrons, and since there are three oxygen atoms in one formula unit of Al2O3, the total number of electrons contributed by oxygen atoms is 6.

Therefore, to form one formula unit of Al2O3, a total of 12 electrons (6 from aluminum and 6 from oxygen) must be transferred.

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Ca^2+ ion  is smaller than Mg^2+ ion hence it has a greater heat of formation or lattice energy.

When a crystal lattice is formed, the energy that is released if the component ions of the compound are brought together from infinity is called the lattice energy. It is the energy released when a crystal lattice is formed from its component ions.

The question lets us know that the heat released by the compounds depends on the energy released upon formation of the compound. Hence, the higher the energy released upon formation, the higher the magnitude of heat released upon dissolution of the compound.

Recall that lattice energy depends on the size of the ions. Thus, the smaller the ions, the higher the lattice energy.

Ca^2+ is smaller than Mg^2+ hence more energy is given off when CaCl2  is formed than when MgCl2  is formed.

As stated above, the greater the lattice energy, the greater the heat released when the lattice dissolves and the higher the rise in temperature.

Putting all these together, Sample A must be CaCl2 while sample B must be MgCl2.

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Answer:

The earth-atmosphere energy balance is achieved as the energy received from the Sun balances the energy lost by the Earth back into space. In this way, the Earth maintains a stable average temperature and therefore a stable climate. ... Shortwave radiation reflected back to space by clouds.

Explanation:

hope this helps have a good day

i made it easier to see the answer

Answer:Greenhouse effect

Explanation:

The greenhouse effect causes the atmosphere to retain heat

When sunlight reaches Earth's surface, it can either be reflected back into space or absorbed by Earth. Once absorbed, the planet releases some of the energy back into the atmosphere as heat (also called infrared radiation).

The moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.

A mole of. a substance is the amount of that substance which contains the avogadro number (6.02 × 10^23) of particles in it.

A mole of a substance is usually given as a standard unit measurement of that substance.

The mass of 1 mole of is known as the molar mass if that substance.

From the recipe for preparing scramble eggs given, the moles of substances required are as follows:

Therefore, the moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.

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Answer: double replacement

Explanation:

Answer:

Single Replacement

Explanation:

A + BC --> AC + B

A=Pb

B=H

C=PO4

Answer:

The volume of water containing 150g of sucrose is 600 mL.

Step by step explanation:

To solve this problem, we need to first determine the total mass of the solution. We know that the mass fraction of water is 0.8, which means that water makes up 80% of the solution.

Therefore, the mass fraction of the other component (sucrose) is 0.2, or 20%.

Let's assume we have a total mass of 1 kg (1000 grams) of solution, then the mass of water in the solution would be:

Mass of water = 0.8 x 1000 grams = 800 gramsSince the mass of sucrose is 20% of the total mass,

we can calculate it as:

Mass of sucrose = 0.2 x 1000 grams = 200 grams

Now we can use the density of water to calculate the volume of water that contains 800 grams.

The density of water is approximately 1 gram per milliliter (g/mL).

Therefore, the volume of water that contains 800 grams is:

Volume of water = 800 grams / 1 g/mL = 800 mL

Finally, we can calculate the volume of water that contains 150 grams of sucrose by using the mass ratio of sucrose to water, which is:

150 grams of sucrose / 200 grams of sucrose = 0.75

This means that the volume of water containing 150 grams of sucrose is 0.75 times the volume of water in the entire solution:

Volume of water containing 150g of sucrose = 0.75 x 800 mL = 600 mL

Therefore, the volume of water containing 150g of sucrose is 600 mL.

The infrared absorptions at 1660 cm-1 and 3400 cm-1 suggest the presence of two functional groups in the compound.

The absorption at 1660 cm-1 corresponds to a carbonyl group (C=O). This is because the carbonyl bond has a strong dipole moment, and it can vibrate in different modes, including stretching, bending, and twisting. The stretching vibration of the C=O bond occurs around 1660 cm-1 in the infrared spectrum, and this is a characteristic frequency that is often used to identify the presence of carbonyl groups in organic compounds.

The absorption at 3400 cm-1 corresponds to a hydroxyl group (-OH). This is because the O-H bond has a strong dipole moment, and it can vibrate in a stretching mode. The stretching vibration of the O-H bond occurs around 3400 cm-1 in the infrared spectrum, and this is a characteristic frequency that is often used to identify the presence of hydroxyl groups in organic compounds.

Therefore, the likely functional group that may be present in the compound is a combination of a carbonyl group and a hydroxyl group. One common example of a compound with these functional groups is a carboxylic acid, which has the general formula R-COOH, where R represents a hydrocarbon chain.

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Answer:

1 mole of any substance contains 6.02 x 1023 constituent particles, correct to three significant figures (avogadro constant).

Number of molecules of 4 moles of MgCl2 = 4 x 6.02 x 1023

In every molecule of MgCl2 there are 3 atoms.

Thus, number of atoms in 4 moles of MgCl2 = 3 x 4 x 6.02 x 1023 = 7.22 x 1024

The heating mantle and stir plate are raised up on an iron ring in the distillation setup to provide adequate clearance and support for the round-bottom flask that is being heated and stirred. This also helps to prevent the flask from tipping over or touching the hot surface of the heating mantle, which could cause it to crack or break. Additionally, the elevated height allows for easier access to the flask during the distillation process, making it easier to collect the desired product.

In a distillation setup, the heating mantle and stir plate are raised up on an iron ring for several reasons:

1. Safety: By elevating the heating mantle and stir plate, it helps to prevent accidental contact with the hot surface, reducing the risk of burns or damage to surfaces.

2. Proper positioning: Raising the heating mantle and stir plate ensures that the heat source and stirring mechanism are directly beneath the distillation flask, allowing for efficient and even heating and mixing of the liquid.

3. Easy adjustment: The iron ring allows for easy adjustment of the height of the heating mantle and stir plate, ensuring optimal distance between the heat source and the flask.

4. Stability: The iron ring provides stable and secure support for the heating mantle and stir plate, reducing the risk of accidental spills or mishaps during the distillation process.

In summary, raising the heating mantle and stir plate on an iron ring in a distillation setup provides safety, proper positioning, easy adjustment, and stability, which are essential for a successful distillation process.

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Answer:

B. It breaks larger rocks into smaller and smaller pieces.

Answer:

B

Explanation:

Weathering is the breaking down or dissolving of rocks and minerals on Earths surface.

Answer:

Explanation:

Valleys usually feature rounded sides that mimic a V or a U shape. U-shaped valleys form through glacial erosion. Glaciation develops in established v-shaped river valleys where the ice erodes the surrounding rocks to create a “U” shaped valley with a flat bottom and steep sides. Glacier movement is driven by gravity.

The pH of the resulting solution is 8.77.

The pH of the resulting solution can be calculated using the Henderson-Hasselbalch equation:

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

where pKa is the dissociation constant of the weak acid, [A^-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.

In this case, the weak acid is ammonia (NH₃) and its conjugate base is ammonium ion (NH₄⁺). The dissociation constant (pKa) for the ammonium ion is 9.25.

First, we need to calculate the new concentrations of NH₄⁺ and NH₃ after the addition of nitric acid. Nitric acid reacts with NH₃ to form NH₄⁺ and the nitrate ion (NO₃⁻):

HNO₃ + NH₃ → NH₄⁺ + NO₃⁻

The balanced equation shows that one mole of nitric acid reacts with one mole of ammonia to form one mole of ammonium ion. Therefore, the concentration of NH₄⁺ will increase by 0.0518 moles/0.225 L = 0.2307 M, and the concentration of NH₃ will decrease by the same amount.

So, after the addition of nitric acid, the concentrations of NH₄⁺ and NH₃ will be:

[NH₄⁺] = 0.289 M + 0.2307 M = 0.5197 M

[NH₃] = 0.452 M - 0.2307 M = 0.2213 M

Now, we can plug these values into the Henderson-Hasselbalch equation:

pH = 9.25 + log(0.2213/0.5197) = 9.25 - 0.485 = 8.77

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Oxalate and sulfate are anions, and silver nitrate with thiosulfate is used to test for anions. Barium nitrate and hydroxide can be used to test for cations as well as anions.

Oxalate is an anion, specifically the dianion of oxalic acid (C₂O₄²⁻). Silver nitrate (with thiosulfate) is used to test for the presence of halide anions (Cl⁻, Br⁻, I⁻), not cations.

Barium nitrate is used to test for the presence of sulfate (SO₄²⁻) ions, which are anions. Hydroxide is an anion (OH⁻), and can also be used to test for cations such as Ca²⁺, Mg²⁺, and Fe²⁺ by forming insoluble hydroxide precipitates with them.

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--The complete question is, Will the reagents listed below be used to test for cations or anions?

oxalate

silver nitrate (with thiosulfate)

barium nitrate

hydroxide--

The mass of carbon that you get is equal to 12 grams.

A mole is described as a scientific standard unit that is used to evaluate the huge number of quantities of ions, atoms, molecules, or other particular particles. The atomic mass can be defined as the mass of the one mole of any element and that of any compound is known as molar mass.

The number of entities in one mole was experimentally found to be equal to approximately 6.023 × 10 ²³ which is called Avogadro’s number.

Given, the total mass of carbon powder in the bottle = 500g

The mass of carbon asked to measure = 1 mole

The atomic mass of the carbon element = 12 g

It means the mass of the one mole of carbon element = 12 g

Therefore the mass of carbon that you get will be equal to 12 grams.

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When water is lost, but electrolytes are retained, the first thing that happens is that moves water from the ICF to the ECF.

The fluid inside of cells, also called the cytoplasm or cytosol, makes up about 60% of the water in the human body, totaling about 7 gallons. Organelles like the nucleus, endoplasmic reticulum, mitochondria, lysosomes, and Golgi apparatus are suspended in and supported by the ICF. Also found in the ICF are cellular building blocks like sugars, proteins, carbohydrates, and lipids.

ECFs are any body fluids that are not inside cells. The two main components of ECF are plasma and interstitial fluid (IF). The balance consists of cerebrospinal fluid, lymph, the synovial fluid in the joints, pleural fluid in the pleural cavities (lungs), pericardial fluid around the heart, peritoneal fluid in the peritoneal cavity (abdomen), and the aqueous humor of the eye. In mammals, milk is also considered an extracellular fluid.

The ICF has higher amounts of potassium, phosphate, magnesium, and protein compared to the ECF. The plasma has high concentrations of sodium, chloride, and bicarbonate, but lower levels of protein as compared to the ICF. While water moves passively via osmosis, sodium and potassium ions move in and out of cells using active transport ion pumps. The pumps are powered by adenosine triphosphate (ATP) to provide the energy to move the ions against their concentration gradients (i.e. sodium moves out of the cell and potassium is pumped in) and maintain the gradients inside and outside the cell.

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Butane < acetone < 1-propanol  is a list of the compounds in order of increasing boiling points.

The intermolecular interactions between molecules in a compound play a major role in boiling point. Higher boiling temperatures are a result of greater intermolecular interactions, bigger masses, and less branching.

The highest boiling point is for HF. As we go from HF to HI, the van der Waals forces of attraction between all hydrogen halides get stronger.

Boiling point rises as the difference in electronegativity grows. Additionally, the bp grows as the molecule's size does. So the sequence is CO2, CS2, CCl4, and then H2O.

Van der Waals attraction and dipole-dipole attraction draw acetone molecules together.

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The primary structure of a protein is held together by covalent peptide bonds.

A protein's primary structure refers to the linear sequence of amino acids in the polypeptide chain. Each amino acid in the chain is connected to the next through a covalent bond known as a peptide bond.

Peptide bonds form when the carboxyl group (\(-COOH\)) of one amino acid reacts with the amino group (\(-NH2)\) of the adjacent amino acid, resulting in the release of a water molecule in a process called condensation or dehydration synthesis.

The peptide bond is a strong covalent bond that gives the protein chain its backbone and stability. The sequence of amino acids in the primary structure is essential because it determines the overall structure, folding, and function of the protein.

Changes or alterations in the primary structure, such as mutations or deletions, can lead to significant alterations in the protein's structure and function, potentially resulting in diseases or malfunctioning proteins.

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