From the same 44,000 liters of water used to discover Rubidium Chloride, Busen extracted 17 g of Cesium Chloride (MW=168.36). what was the original concentration (in micromolar) of Cesium chloride? ______ micromolar

Answer: 0.00098

Explanation:

1. Zeroes that appear before a nonzero significant figure are not significant.

  Ex: 0.002 (1 significant figures), 0.13 (2 significant figures)

2. Zeroes that appear between nonzero digits are significant

  Ex: 0.705 (3 significant figures), 2006 (4 significant figures)

3. Zeroes that appear after a nonzero digit are significant only if it is

A. Followed by a decimal point

  Ex: 40 (1 significant figure), 20. (2 significant figures)

or B. They appear to the right of a decimal point

  Ex: 37.0 (3 significant figures), 4.100 (4 significant figures)

7.54 *\(10^8\) meters is  75.4 nanometers.

To convert 7.54 *  \(10^8\) meters to nanometers, you can multiply the value by \(10^9\)

as,  \(10^9\)nanometers = 1  meter.

7.54 * \(10^8\) m * \(10^9\) =  7.54 x \(10^1\) nm

Therefore, 7.54 *\(10^8\) meters is equal to 75.4 nanometers.

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To convert 7.54 x 10^-8 meters to nanometers, you multiply 7.54 x 10^-8 by 1 x 10^9 to get 75.4 nanometers.

To convert meters to nanometers, you need to know that 1 meter is equivalent to 1 x 109 nanometers. Therefore, if you were to convert 7.54 x 10-8 m to nanometers, you would multiply 7.54 x 10-8 by 1 x 109.

Here's how you'd do it: 7.54 x 10-8 m * 1 x 109 nm/m = 75.4 nm. So, 7.54 x 10-8 meters is equivalent to 75.4 nanometers.

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Answer:

Catalysts help in increasing rates of reactions

Answer:

тємρєяαтυяє

Explanation:

Temperature. Usually reactions speed up with increasing temperature.

Answer:

Collecting data

Explanation:

Scientific inquiry can be explained as methods undertook by scientists to profer solutions, explanations, predict natural occurence and to some extent solve some of the problems of the earth through scientific study and processes. Evidence of solutions is made available to be built upon by also other scientists in the near future.

process of scientific inquiry include, in no particular order:

Note, that the explanation below doesn't follow any order.

1. Formulating questions: This is the problem that needed to be solved. Scientific inquiries usually begin with a question that can be proven scientifically.

2. Observation: taking neccessary information for the experiment.  Collecting data (answer to the question) falls under this process as information collected are used to carry out the experiment.

3. Hypothesis: Based on the observation and test carried out, scientists provide answers to the experiment, however methods used remain open for further experiments by other scientists. This is done so the results are tested and proven before they can be generally accepted as a rule or law.

4. Experiment: the experiment is carried out here.

5. Data analysis: Here the data collected are analysed using scientific methods.

6. Results: This stage shows the other aforementioned stages took place. Results of the scientific research/experiment are published.

Answer:collecting data

Explanation:i did it on study island

The volume of the gas in the tank at 293K and 3.0 atm pressure is 248 L. Hence, option B is correct.

Given:

T1 = 473K

T2 = 293K

P1 = 0.92 atm

P2 = 3.0 atm

The ideal gas law equation is:

PV = nRT

where P is pressure, V is volume, n is the number of moles of gas, R is the universal gas constant, and T is temperature.

n1 = (PV)/(RT)

= (0.92 atm × 500.0 L)/(0.0821 Latm/molK × 473K)

= 10.42 mol

Use the ideal gas law again to find the final volume of the gas in the tank under high pressure:

V2 = (n1 × R × T2)/P2

= (10.42 mol × 0.0821 Latm/molK × 293K)/(3.0 atm)

= 248 L

Therefore, the volume of the gas in the tank at 293K and 3.0 atm pressure is 248 L.

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Answer:

Using the ideal gas law, PV=nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature in Kelvin, we can solve for n:

n = PV/RT

We know that the initial volume is 500.0 L, pressure is 0.92 atm, and temperature is 473K. We can use this information to find the initial number of moles:

n1 = (0.92 atm x 500.0 L)/(0.08206 L atm/mol K x 473K) = 11.80 mol

Next, we can use the ideal gas law again to find the final volume. We know that the final pressure is 3.0 atm and the final temperature is 293K:

V2 = nRT2/P2

V2 = (11.80 mol x 0.08206 L atm/mol K x 293K)/3.0 atm = 95 L

Therefore, the volume of the gas at the lower temperature and higher pressure is approximately 95 L. Answer: 95 L.

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:

an unbalanced force

Explanation:

Answer:

I think:

CH3COCH2CH2CH3 belongs to ketone because it has a carbonyl group C=O in its structure.

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:

There are many plate boundaries along Pacific coastlines is explained below in complete details.

Explanation:

The San Andreas Fault, extending along the central west shoreline of North America, is one of the common operating faults on the Ring of Fire. It rests on the transform boundary within the North American Plate, which is traveling south, and the Pacific Plate, which is traveling north. This kind of boundary produces a large number of earthquakes as tightness in Earth's crust forms up and is discharged.

Answer:

This would be 63 gallons :)

Explanation:

The Volume of water = 2.4 × 10² L

The Volume of water in gal = ?

The solution:  We know that one gal is equal to 3.785 litter.

So in conclusion, 2.4 × 10²L × 1 gal / 3.785 L

2.4 × 10²L × 0.264 gal. L⁻¹

0.634 × 10² gal

Hopefully this helps :3

63 gal

Hello, this is Bing. I can help you with your question. Based on the information I found on the web, **H2** can be broken down into its two atoms of hydrogen (H) by supplying enough energy to overcome the bond that holds them together⁴. This process is called **dissociation** and requires an energy equal to or greater than the **dissociation energy** of H2, which is about 436 kJ/mol⁴.

One way to break down H2 is by using **electricity** to split water (H2O) into hydrogen (H2) and oxygen (O2) through a process called **electrolysis**¹. In this process, water is decomposed into its elements by passing an electric current through it. The electric current is provided by a battery or another source of electricity and the water needs to have an **electrolyte**, such as salt or acid, added to it to make it conductive¹. Two electrodes, usually made of metal or other conductive material, are inserted into the water and connected to the battery. The electrode connected to the positive terminal of the battery is called the **anode** and the one connected to the negative terminal is called the **cathode**¹. When the electric current flows through the water, hydrogen gas bubbles form at the cathode and oxygen gas bubbles form at the anode¹. The overall chemical reaction for electrolysis of water is:

2 H2O → 2 H2 + O2

Another way to break down H2 is by using **heat** to cause a reaction between hydrogen and oxygen that produces water and releases a large amount of energy. This reaction is called **combustion** or **oxidation** and can be ignited by a spark or a flame³. The reaction is very fast and explosive and can be dangerous if not controlled. The overall chemical reaction for combustion of hydrogen is:

2 H2 + O2 → 2 H2O

I hope this helps you understand how H2 can be broken down and what methods are used to do so.

Answer:

D

Explanation:

P1 x V1 = P2 x V2

7.00(740) = x(2.00)

2590 mm Hg

took me a while because i dont know this, hope its right good luck

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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The sludge treatment tank , organic solids that have settled to the bottom of the treatment tanks in step B are transferred.

What is sludge treatment tank?

The procedures utilized to handle and dispose of the sewage sludge created during sewage treatment are referred to as sewage sludge treatment. In order to cut down on transportation and disposal expenses as well as potential health issues, sludge treatment focuses on reducing sludge weight and volume.

What is organic solids ?

All organic solids share the unique property of being intricate chemical complexes based on carbon. Due to the fact that carbon atoms contain four valence electrons, they frequently combine with atoms of other elements, such as hydrogen or nitrogen, to create covalent bonds.

Therefore,  sludge treatment tank , organic solids that have settled to the bottom of the treatment tanks in step B are transferred.

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(E, E)-3,5-octadiene, molecular formula is C8H14, molecular weight is 110.20,(3E,5E)-octa-3,5-diene is its IUPAC name.

What is IUPAC?

The International Union of Pure and Applied Chemistry (IUPAC) is a global federation of National Adhering Organizations dedicated to the progress of the chemical sciences, particularly through the creation of nomenclature and terminology. It is an International Science Council member (ISC).

What is the Molecular formula?

A molecule is made up of two or more atoms that have joined together chemically. A molecular formula is the chemical representation of a molecular compound that lists the types and quantities of atoms that make up each molecule.

Hence, the structure of the compound (E, E)-3,5-octadiene is in the image attached. The image is from Pubchem, National library of medicine (NCBI).

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Answer:

Answer choice B. 2

Explanation:

5.678 plus 82.5 equals 88.178. The solution should be rounded to the least amount of decimal places in any of the numbers, which is one decimal place in 82.5 as both values contain three significant figures.

Therefore, 88.2 is the final response, rounded to the proper significant digits.

The number of meaningful digits in a number is referred to as a significant figure. They are crucial for computations and measurements in science since they show how precise a measurement was.

The least precise measurement or value used in the calculation usually determines the number of significant numbers in a measurement or calculation.

The final result should be rounded to the same number of decimal places or significant figures as the calculation's least exact number when adding or subtracting values with differing amounts of decimal places or significant figures.

In this instance, 5.678 contains four significant figures, but 82.5 has three. The final result should therefore be rounded to three significant digits.

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Answer:

HS(-)

HCOO(-)

SO3(2-)

SO4(2-)

S(2-)

NO2(-)

CN(-)

Explanation:

The parenthesis are the charges of the compounds. When an acid is introduced in a base, it dissociates its Hydrogens giving protons to the base. In this case, if you remove one hydrogen of a compound, you will reduce the charge of a compound since basically you're removing a positive charge from a compound. If you need to, I can explain how the thing of the charges work.

In fact, the definition of a conjugate base is a compound created when the original (an acid) compound dissacioate an atom of hydrogen (a proton) in a base.

Answer:

if I remember correctly there should be 12

There are 12 oxygen atoms in the 6 molecules of carbon dioxide.

In each molecule of carbon dioxide (CO₂), there are two oxygen atoms. Therefore, to determine the total number of oxygen atoms in 6 molecules of carbon dioxide, we multiply the number of molecules by the number of oxygen atoms per molecule.

6 molecules of carbon dioxide × 2 oxygen atoms per molecule = 12 oxygen atoms

Hence, there are 12 oxygen atoms in 6 molecules of carbon dioxide.

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Answer:

+5.7%

Explanation:

18.5mL/17.5mL = 1.057 = 105.7% - 100% = 5.7%

Since the measured volume was higher, it is PLUS 5.7%

The consistency that should be assessed for observations via different observers is inter-rater reliability.

The following information should be considered:

Therefore we can conclude that the consistency that should be assessed for observations via different observers is inter-rater reliability.

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An amino group is a functional group consisting of an amino (-NH2) and a carboxyl (-COOH) group, which is found in proteins.

It is essential for the formation of peptide bonds between amino acids, which are the building blocks of proteins. The amino group is partially positively charged and is therefore able to interact with other molecules through hydrogen bonding and electrostatic interactions.

The amino group is also able to donate a hydrogen atom, making it an important component in many biochemical reactions.

Furthermore, it plays an important role in the folding of proteins, as the electrostatic interactions between the amino and carboxyl groups help stabilize the protein's three-dimensional structure. In addition, the presence of the amino group can influence the solubility of proteins in different solutions.

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1) 155.52 g of oxygen of magnesium chlorate. 2) 6,246.41 g of copper(I) sulfide is produced from 78.5 moles of copper. 3) 175.95 kg of potassium produce 9.00 x \(10^3\) . 4) 1.49 x \(10^-4\)g of calcium oxide is formed from 2.95 x \(10^-6\) moles of aluminum oxide and calcium phosphide.

1. The balanced equation for the decomposition of magnesium chlorate is:

2Mg\((ClO_{3})\)2(s) → 2MgO(s) + \(3O_{2} (g)\) +\(2Cl_{2} (g)\)

From the equation, 2 moles of magnesium chlorate produce 3 moles of oxygen gas.

So, 3.24 moles of magnesium chlorate will produce (3/2) x 3.24 = 4.86 moles of oxygen.

The molar mass of oxygen is 32 g/mol.

Therefore, the mass of oxygen produced is:

4.86 moles x 32 g/mol = 155.52 g

2. The balanced equation for the reaction between copper and sulfur is:

2Cu(s) + S(s) → \(Cu_{2}S(s)\)

From the equation, 2 moles of copper react with 1 mole of sulfur to produce 1 mole of copper(I) sulfide.

So, 78.5 moles of copper will produce (1/2) x 78.5 = 39.25 moles of copper(I) sulfide.

The molar mass of copper(I) sulfide is 159.16 g/mol.

Therefore, the mass of copper(I) sulfide produced is:

39.25 moles x 159.16 g/mol = 6,246.41 g

3. The balanced equation for the reaction between potassium and water is:

2K(s) + 2\(H_{2}O\)(l) → 2KOH(aq) + \(H_{2}\)(g)

From the equation, 2 moles of potassium react with 2 moles of water to produce 1 mole of hydrogen gas.

So, 9.00 x \(10^3\) moles of hydrogen gas will be produced by the reaction of (1/2) x 9.00 x \(10^3\) = 4,500 moles of potassium.

The molar mass of potassium is 39.10 g/mol.

Therefore, the mass of potassium required is:

4,500 moles x 39.10 g/mol = 175,950 g or 175.95 kg

4. The balanced equation for the reaction between calcium phosphide and aluminum oxide is:

\(3Ca_{3}P_{2}\)(s) +\(10Al_{2}O_{3}(s)\) → 9CaO(s) + \(2Al_{2}S_{3}\)(s) + \(6P_{4}\)(g)

From the equation, 3 moles of calcium phosphide react with 10 moles of aluminum oxide to produce 9 moles of calcium oxide.

So, 2.95 x\(10^-6\) moles of aluminum oxide will produce (9/10) x 2.95 x \(10^-6\) = 2.655 x \(10^-6\) moles of calcium oxide.

The molar mass of calcium oxide is 56.08 g/mol.

Therefore, the mass of calcium oxide formed is:

2.655 x\(10^-6\) moles x 56.08 g/mol = 0.000149 g or 1.49 x \(10^-4 g\).

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Answer:

the theoretical 100% yield of the product in milligrams is 302920 mg

Explanation:  

Given the data in the question;  

245 mg of an oil

Using the moles of our protected aldehyde calculated earlier (2.96)

the molecular weight of the product (102 g/mol) = 102000 mg/mol

so, the mass of aldehyde produced (100% yield) will be;

⇒ number of moles × molar mass

⇒ 2.96 mol × 102000 mg/mol

⇒ 302920 mol.mg / mol

⇒ 302920 mg

Therefore, the theoretical 100% yield of the product in milligrams is 302920 mg

Answer:

the population of the region

Hope this helps :)