rom the initial cell setup you calculated a cell constant, k, of 454.9 mv and a nernst constant, n, of 58.7 mv. after the addition of chloride you measure a cell voltage of 84.4 mv. what is the solubility product of silver chloride? (report your answer as log(ksp) with 3 decimal places) note: report your answer as log(ksp), not simply ksp. a ksp of 1.75e-10 would be reported as -9.757.

If you were to spill a little benzoic acid as you mix it with the lauric acid, the calculated molecular weight would be too high.

This is because the amount of benzoic acid would be greater than the amount of lauric acid, and the molecular weight of benzoic acid is higher than the molecular weight of lauric acid.

The molecular weight of a substance is the sum of the atomic weights of the atoms that make up the substance. Benzoic acid has a molecular weight of 122.12 g/mol, while lauric acid has a molecular weight of 200.32 g/mol.

If you were to spill a little benzoic acid, the total amount of benzoic acid and lauric acid would be greater than the amount of lauric acid that would be present if no benzoic acid were spilled.

This would cause the calculated molecular weight to be higher than the actual molecular weight of lauric acid.

To avoid this, it is important to be careful when mixing benzoic acid and lauric acid. It is also important to use a balance that is accurate to at least 0.01 g to measure the amounts of benzoic acid and lauric acid.

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Magma comes from earth crust. This lava has the possibility of pushing through holes or fissures in the crust, resulting in a volcanic explosion.

Magma is a very hot liquid and semi-liquid rock found under the Earth's crust. The core material, outer layer, mantle, as well as crust make up Earth's stratified structure. Magma makes up a large portion of the planet's mantle.

This lava has the possibility of pushing through holes or fissures in the crust, resulting in a volcanic explosion. Lava is formed when magma flow or erupts onto the Earth's surface. Magma, like solid rock, is a mineral combination. Small quantities of gaseous oxygen such as vapour, carbon dioxide, as well as sulfur are also present. Magma comes from earth crust.

Therefore, magma comes from earth crust.

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Answer:

Explanation:

The Kudzu is a plant that was introduced to the United States from Japan in the year 1876. In the United States it was introduced as an ornamental plant but with a reason which was to prevent soil erosion. Kudzu was disseminated as being high-protein content used to steer feed as well as a spreading plant to counteract soil erosion.

Answer:

Kudzu was introduced as an ornamental plant.

+

Kudzu was introduced as a way of preventing soil erosion.

So, A and D!

Answer:

The amount of energy required to vaporize 1.5 kg of aluminium is 16.345 GJ

Explanation:

Given that the heat of vaporization of aluminium, ΔHvap = 294000 kJ/mol

Mass of the given aluminium = 1.5 kG = 1500 g

Number of moles of aluminium = Mass of aluminium/(Molar Mass of aluminium)

Molar Mass of aluminium = 26.98 g/mol

Therefore, we have;

Number of moles = 1500/26.98 = 55.6 moles

The energy required = The heat of vaporization of aluminium × Number of moles of aluminium

The energy required = 294000 × 55.6 = 16345441.0675 kJ = 16.345 GJ.

Answer:

1650 kJ

Explanation:

Q = ΔH vaporization (for Al) x m

Q = 1100 kJ/kg x 1.5 kg = 1650 kJ

Answer:

A, And D

Explanation:

I did this before and i got it right ❤

Answer: 6 moles

Take a look at the balanced chemical equation for this synthesis reaction

N 2(g] + 3 H 2(g] → 2 NH 3(g]

Notice that you have a  1:3  mole ratio between nitrogen gas and hydrogen gas. This means that, regardless of how many moles of nitrogen gas you have, the reaction will always consume twice as many moles of hydrogen gas.

So, if you have  2 moles of nitrogen taking part in the reaction, you will need

2 moles N 2 ⋅ 3 moles H 2 /1 mole N 2 = 6 moles H 2

Answer:

\(\boxed {\boxed {\sf SO_3}}\)

Explanation:

An empirical formula shows the smallest whole-number ratio of the atoms in a compound.

So, we must calculate this ratio. Since we are given the amounts of the elements in moles, we can do this in just 2 steps.

The first step is division. We divide the amount of moles for both elements by the smallest amount of moles.

There are 0.300 moles of sulfur and 0.900 moles of oxygen. 0.300 is smaller, so we divide both amounts by 0.300

The next step is writing the formula. We use the numbers we just found as the subscripts. These numbers go after the element's symbol in the formula. Remember sulfur is S and there is 1 mole and oxygen is O and there are 3 moles.

This formula is technically correct, but we typically remove subscripts of 1 because no subscript implies 1 representative unit.

\(\bold {The \ empirical \ formula \ for \ the \ compound \ is \ SO_3}}\)

The observations regarding the differences in ionization energy can be explained by understanding the concept of electron configuration and the placement of electrons in energy levels.

1. Second and Third Ionization Energy of Magnesium:
When an atom loses an electron to form a cation, the energy required is called ionization energy. In the case of magnesium, the first ionization energy corresponds to the energy needed to remove the first valence electron. The second ionization energy, on the other hand, is the energy required to remove the second electron from the now positively charged ion.

The second electron in magnesium is located in a lower energy level than the first valence electron. It is closer to the nucleus and thus more strongly attracted. Therefore, it requires more energy to remove this electron compared to the first valence electron.

Now, the third ionization energy of magnesium is even higher because it involves removing an electron from the next energy level, which is even closer to the nucleus. As we move closer to the nucleus, the attraction between the positive nucleus and the negatively charged electrons increases, making it more difficult to remove an electron.

2. Third and Fourth Ionization Energy of Aluminum:
Similarly, in the case of aluminum, the third ionization energy represents the energy required to remove an electron from the third energy level. This energy is significantly higher than the second ionization energy because the third energy level is closer to the nucleus and the attraction between the nucleus and the electrons is stronger.

Moving on to the fourth ionization energy, it involves removing an electron from the next energy level, which is even closer to the nucleus. As mentioned earlier, the closer an electron is to the nucleus, the stronger the attraction, and the more energy is required to remove it.

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Answer:

hot to cold

Explanation:

Answer:

yeah hot to cold

Explanation:

Answer:

Field Ecologist. ...

Restoration Ecologist. ...

Park Naturalist. ...

Marine Biologist. ...

Environmental Consultant. ...

Environmental Protection Specialist. ...

Natural Resource Manager.

Answer:

C.) 4.85 x 10⁻¹⁹ J

Explanation:

To find the energy, you need to use the following equation:

E = hc / w

In this formula,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> c = speed of light (3.00 x 10⁸ m/s)

-----> w = wavelength (m)

Once you have converted nanometers to meters, you can plug the given values into the equation and solve.

410 nm                1 m
-------------  x  ----------------------  =  4.10 x 10⁻⁷ m
                        1 x 10⁹ nm

E = hc / w

E = (6.626 x 10⁻³⁴ J*s)(3.00 x 10⁸ m/s) / (4.10 x 10⁻⁷ m)

E = 4.85 x 10⁻¹⁹ J

Answer:

It is 20. g HF

Explanation:

H2 + F2 ==> 2HF  ...  balanced equation

Since the question is asking us to find the mass of product formed, we will want to first convert the molecules of H2 into moles of H2 (we could do this at the end of the calculations, but it's just as easy to do it now).

moles of H2 present (using Avogadro's number):  

3.0x1023 molecules H2 x 1 mole H2/6.02x1023 molecules = 0.498 moles H2

From the balanced equation, we see that 1 mole H2 produces 2 moles HF.  Therefore, we can now find the theoretical mass of HF produced from 0.498 moles H2:

0.498 moles H2 x 2 moles HF/1 mol H2 = 0.996 moles HF formed.

The molar mass of HF = 20.01 g/mole, thus...

0.996 moles HF x 20.01 g/mole = 19.93 g HF = 20. g HF formed (to 2 significant figures)

Answer:

4

Explanation:

if the 0 is in the beginning it is not significant.

0 in between are always significant.

the 0 at the end are only significant if theres a decimal.

The formula below is used to determine the temperature change of the exothermic reaction:

Temperature change = final temperature - beginning temperature.

Exothermic reactions are this kind of reaction.

The formula below is used to determine the temperature increase:

Temperature change equals final temperature minus beginning temperature.

The temperature of their surroundings rises as a result of exothermic reactions.

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Answer:

The correct option is;

A. 0

Explanation:

The ammonia molecule has four pairs of electron whereby being located around the central nitrogen atom is tetrahedral in shape.

Of the four pairs of electrons, three are the bonds between nitrogen and hydrogen, such that there is only one lone pair of electron in the ammonia molecule that is located on the central nitrogen atom

The one electron on each hydrogen atoms and one of the electrons on the nitrogen atom form a bonding pair of electrons, that is the bonding pair of electrons are shared by the two nuclei, hydrogen and nitrogen

Since a lone pair are a pair of electrons attached to only one nucleus, the hydrogen in ammonia has no lone pair of electrons.

The concentration of arsenic would be 26,13 ppm

To find the concentration in PPM, we can use this following formula:

(amount of solute ÷ amount of whole solution) × 1,000,000

The most crucial consideration when running a PPM calculation is to ensure that the units you select for the solution and the substance of interest are consistent with one another. For example, if you want to calculate the concentration of a solute in a solution, you can't just add up the solute's mass and the volume of the solution; you need to do the calculations using mass and mass or volume and volume.

Thus, the concentration of arsenic would be:

(0.0597 ÷ 2285) × 1,000,000 = 26,13 ppm

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This is true. nuclear fusion occurs in stars.

Nuclear fusion does occur in stars. It is the process by which stars generate energy by fusing lighter atomic nuclei, typically hydrogen, into heavier nuclei, such as helium.

This fusion process releases an enormous amount of energy, which is what powers stars and enables them to shine.

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1 and 2 are oxidation reactions.

An oxidation reaction is a type of chemical reaction that involves the transfer of electrons from one substance to another. Oxidation reactions are characterized by an increase in the oxidation state of a molecule, atom, or ion, resulting in a loss of electrons.

The substance that loses electrons is said to be oxidized, while the substance that gains electrons is said to be reduced.

Oxidation reactions play important roles in many chemical and biological processes, including energy production, metabolism, and corrosion.

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When the molecules absorb the heat, there is an increase in the kinetic energy of the molecules.

When the substance absorbs the heat, the vibration energy of the particles or the molecules in that substance will increases. The  vibrational energy is created due to the collision of the particles. When the molecules  absorbs the heat, the molecules will start moving more  faster because of the kinetic energy will increases, Therefore the  disorder will increases. When the heat absorbed by the molecules, the heat energy causes the inter particle bonds to be weaken and will break and this  leads to the change of state

Thus, the kinetic energy increases as the the molecules absorbs the heat energy.

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This diagrammatic representation is called an organizational chart or an organogram.

Organizational charts use boxes or rectangles to represent positions or departments within a firm, and lines or arrows to connect them, indicating the reporting relationships and hierarchy within the organization.   Organizational charts can vary in complexity depending on the size and structure of the firm. They provide a visual representation of the reporting relationships and help individuals understand the hierarchy and structure of the organization.

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Solution with a pH of 2 is 100 times more acidic than a solution with a pH of 4. The correct answer is d. 100.

A solution with a pH of 2 is how many times more acidic as a solution with a pH of 4?

To determine this, follow these steps:

Step 1: Calculate the difference in pH levels.
Difference = pH of 4 - pH of 2 = 4 - 2 = 2

Step 2: Use the formula for comparing acidity levels.
Acidity Ratio = 10^(Difference) = 10⁻²

Step 3: Find the answer.
Acidity Ratio = 100

Solution with a pH of 2 is 100 times more acidic than a solution with a pH of 4. The correct answer is d. 100.

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After 6 half-lives, only 15.625 g of the initial 1000 g of cobalt-60 would remain in the sample.

The half-life of cobalt-60 is 5.27 years, which means that after every 5.27 years, half of the initial amount of the isotope would decay. So after 1 half-life, we would have 500 g remaining. After 2 half-lives, we would have 250 g remaining, after 3 half-lives we would have 125 g remaining, after 4 half-lives we would have 62.5 g remaining, and after 5 half-lives we would have 31.25 g remaining.

Now, we need to calculate how much would remain after 6 half-lives. So after 5 half-lives, we had 31.25 g remaining. After another half-life, we would have half of 31.25 g, which is 15.625 g remaining.

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Answer:

C.

Explanation:

Its earthquake that is produced.

Answer:

They mask the recessive alleles

Answer:

5.2 moles of  KClO₃  are needed

Explanation:

Given data:

Number of moles of potassium chlorate needed = ?

Number of moles of O₂ formed = 7.8 mol

Solution:

Chemical equation:

2KClO₃      →     2KCl + 3O₂

now we will compare the moles of KClO₃ and  O₂.

                   O₂        :         KClO₃    

                    3          :           2

                   7.8        :          2/3×7.8 = 5.2

5.2 moles of  KClO₃  are needed.

Answer:

yes it it

Explanation:

Magnesium ion and silicate 2:1.

The average temperature is 17.0 °C.

The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature.

Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points and thermometric substances. The most popular scales are the Celsius scale, sometimes known as centigrade, with the unit symbol °C, the Fahrenheit scale (°F), and the Kelvin scale (K), with the latter being mostly used for scientific purposes. One of the International System of Units' (SI) seven base units is the kelvin law of cosines.

The lowest point on the thermodynamic temperature scale is absolute zero, or zero kelvin, or 273.15 °C.

To find the average temperature, we add up the individual temperatures and divide by the total number of measurements. Let's calculate:

Average temperature = (16.9 + 17.0 + 17.1) / 3 = 51.0 / 3 = 17.0

Therefore, the average temperature is 17.0 °C.

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Answer:

Magnesium (Mg)

Explanation:

The amount of electrons displayed on this model is 12. Assuming that this is a neutral atom, the amount of electrons is equal to the atomic number of a given element. Therefore, 12 electrons correspond to the twelfth element on the Periodic Table, Magnesium.

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The molecular weight of the hydrocarbon is approximately 82 g/mol.. To determine the molecular weight of the hydrocarbon, we need to use the boiling point elevation formula.

The boiling point elevation, ΔTb, of a solution is given by ΔTb = Kb * molality, where Kb is the molal boiling point constant for the solvent (1.71 °C/m for acetone) and molality is the concentration of solute in the solution (moles of solute per kilogram of solvent).

The molality of the solution can be calculated as follows:

molality = (5.35 g of hydrocarbon) / (molecular weight of hydrocarbon)

The boiling point elevation can then be calculated as:

ΔTb = Kb * molality

Rearranging the equation and substituting the known values, we can solve for the molecular weight of the hydrocarbon:

molality = (56.60°C - 55.95°C) / Kb

molality = 0.065 mol/kg

molecular weight of hydrocarbon = (5.35 g) / (0.065 mol/kg)

The molecular weight of the hydrocarbon is approximately 82 g/mol.

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