At 25 oC the solubility of magnesium carbonate is 3.16 x 10-3 mol/L. Calculate the value of Ksp at this temperature. Give your answer in scientific notation to 2 SIGNIFICANT FIGURES (even though this is strictly incorrect)

The number of moles of carbon, C, in the original sample is 0.83 moles.

Combustion analysis allows us to determine the composition of a compound by measuring the amounts of carbon dioxide and water produced. In this case, 7.00 g of the unknown compound produced 10.3 g of carbon dioxide and 4.20 g of water. To calculate the number of moles of carbon in the sample, we need to find the moles of carbon dioxide formed during combustion.

We can start by converting the mass of carbon dioxide into moles using its molar mass. The molar mass of carbon dioxide (CO2) is approximately 44.01 g/mol (12.01 g/mol for carbon and 16.00 g/mol for oxygen). Dividing the mass of carbon dioxide (10.3 g) by its molar mass gives us the number of moles: 10.3 g CO2 / 44.01 g/mol = 0.234 mol CO2.

Since carbon dioxide (CO2) has a 1:1 mole ratio with carbon (C) in the combustion reaction, we can conclude that there are 0.234 moles of carbon in the original sample.

Combustion analysis is a crucial technique used in chemistry to determine the elemental composition of a compound. By quantifying the amounts of carbon dioxide and water produced during combustion, it is possible to calculate the number of moles of carbon, hydrogen, and oxygen in the original compound.

This information can then be used to deduce the molecular formula of the unknown compound. By utilizing the principles of stoichiometry and the molar masses of the involved elements, scientists can derive valuable insights into the composition and structure of various organic compounds.

Learn more about carbon dioxide

brainly.com/question/3049557

#SPJ11

Acetic acid is the by product of production of aspirin. Aspirin crystals are formed after the acetic acid is removed through filtration of the acetic acid-water solution. Recrystallization from an ethanol/water solvent pair removes any trace levels of salicylic that are still present.

Acetylsalicylic acid (ASA), generally known as aspirin, is a nonsteroidal anti-inflammatory medication (NSAID) used to treat inflammation, fever, and/or pain as well as a blood thinner. Aspirin is used to treat a variety of inflammatory disorders, including Kawasaki disease, pericarditis, and rheumatic fever. 

Long-term usage of aspirin is also used to help those at high risk avoid further heart attacks, ischemic strokes, and blood clots.

The effects of pain or fever usually start to take effect after 30 minutes. While aspirin functions similarly to other NSAIDs, it also inhibits platelets' natural function.

To know more about aspirin, click here,

brainly.com/question/14911199

#SPJ4

The trend which depicts the reactivity of most nonmetals show in a periodic table, excluding the noble gases is that increases from left to right across the periodic table and is denoted as option C.

This is referred to as the tabular arrangement of elements into groups and periods according to their similar features such as reactivity, conductivity, valence electrons etc.

In the table, the reactivity of most nonmetals such as nitrogen decreases top down within groups and increases from left to right across period which is therefore the reason why it was chosen as the most appropriate choice.

Read more about Periodic table here https://brainly.com/question/15987580

#SPJ1

Answer:

its B! :)

Explanation:

c was not true ❕

Answer:

3

Explanation:

Answer:

No I don't have a graph of the Boyle's law

Iron has a molar mass of 55.84 grams/mole. So, five grams divided by 55.84 grams/mole gives us 0.089 moles of iron

To learn more about moles refers to:

brainly.com/question/15356425

#SPJ1

Answer:

The answer you have selected in the screenshot is correct.

Its tendency to react with oxygen is correct.

Hope this helps.

Answer:

Probably B?

Explanation:

I don't have one...

Hope it helps I guess..

Answer: i think is B

Explanation: HATE ME IF IM WRONG

Answer:

where ni = no. of moles of any compound and mi = molecular mass of any ... Sulphur : (w) O.C. + HNO3 → H2SO4 + BaCl2 → (w1) BaSO4 ... 0.365 g of pure HCl gas is dissolved in 50 mL of solution. ... yield is 80% then calculate the amount of Cl2 produced. the amount of water ... Fe2O3 + 3SO3 Fe2(SO4)3

Explanation:

did that help if not please contact me in the comments.

Answer:

carbon,hydrogen and oxygen

molecular formula=CH3COOH

Answer:

Điều này là kết quả của quá trình hydrat hóa các ion: lực hút của các phân tử nước đối với Công thức phản ứng của kali hydroxit với các ion nước. Phản ứng có thể được viết dưới dạng KOH (s) → K⁺ (aq) + OH⁻ (aq).

Explanation:

Answer:

protons

Explanation:

the number of protons determines where it is on the periodic table and therefore groups it with other like chemical properties. Protons = Atomic Number

Answer:

proton

Explanation:

hope this helps

Answer:

The initial volume of the container was 1.27L

Explanation:

Avogadro's law states that under the same pressure and temperature, equal moles of gases occupies equal volume. The equation is:

V₁n₂ = V₂n₁

Where V is volume and n moles of 1, initial state and 2, final state.

In the problem, initial moles are 5.67x10⁻², final moles after the addition are:

5.67x10⁻² + 2.95x10⁻² = 8.62x10⁻² moles

And, after the addition, the volume is 1.93L.

Replacing in Avogadro's law:

V₁×8.62x10⁻² moles = 1.93L×5.67x10⁻² moles

V₁ = 1.27L

A dichotomous key diagram for the given species of bacteria based on the provided tests Start,Gram stain

Here's a dichotomous key diagram for the given species of bacteria based on the provided tests:

Gram stain

Oxygen requirement

Sugar Fermentation broth

Growth on NaCl

Novobiocin

Nitrate reduction broth

Oxidase

Sugar Fermentation broth

End

Note: This dichotomous key is based on the provided tests and is specific to the given list of gram-positive bacteria.

Learn more about Bacterial Classification.

brainly.com/question/14373278

#SPJ11

The civil rights movement shifted its focus from ending de jure segregation in the south to combating de facto segregation and racial inequality in the north.

However, this proved to be a challenging task as it involved changing deep-rooted racist attitudes and tackling social and economic issues that were deeply ingrained in northern cities. Despite some progress, the results of the movement could be called mixed. While significant gains were made in ending legal segregation and securing voting rights, de facto segregation and racial inequality persisted in many parts of the country. The riots that erupted in several cities were a clear indication of the frustration and anger felt by African Americans over the lack of progress.

Furthermore, the growing involvement in the Vietnam War diverted resources away from the war on poverty and civil rights, causing a setback for the movement. However, the civil rights movement paved the way for future social justice movements and helped to bring about significant changes in American society.

To know more about segregation visit:-

https://brainly.com/question/14330237

#SPJ11

No, the Law of Conservation of Mass does not hold true for this case because the mass of reactant is not equal to the mass of product.

What is Law of Conservation of Mass?

To learn more about Law of Conservation of Mass from the given link

https://brainly.com/question/15289631

#SPJ1

It takes approximately 6 half-lives for there to be less than 1% of Uranium-238 left and approximately 5 half-lives for there to be less than 1% of Uranium-235 left.

The concept of half-life is a fundamental aspect of radioactive decay. The half-life of a radioactive substance is the time it takes for half of the initial amount of the substance to decay. After one half-life, 50% of the substance remains, after two half-lives, 25% remains, and so on.

For Uranium-238, which has a very long half-life of about 4.5 billion years, it takes approximately 6 half-lives to reach less than 1% of the initial amount. This means that after each half-life, the amount of Uranium-238 is halved, and after six such halvings, less than 1% is left.

On the other hand, Uranium-235 has a shorter half-life of about 703.8 million years. Thus, it takes approximately 5 half-lives for Uranium-235 to reach less than 1% of the initial amount.

Knowing the number of half-lives required for a substance to reach less than 1% of its initial quantity is important in various scientific and practical applications, particularly in understanding radioactive decay and the behavior of radioactive materials over time.

Learn more about half-lives here:

https://brainly.com/question/30599798

#SPJ11

Answer:

Mass

Explanation:

The kinetic molecular theory of matter explains the physical properties of matter and how they relate to their molecular structures. This theory states that matter is made up of tiny particles, called molecules, that are always in constant motion, even when in a solid state.

The kinetic molecular theory of matter helps in explaining the properties of matter and how it relates to the molecular structures of matter. According to this theory, the particles that make up matter are in constant motion regardless of their state of matter, and their motion is related to the state of matter they exist in. The theory is divided into three main postulates as follows:1. Matter is made up of tiny particles called molecules that are in constant motion, even when in a solid state.2. The movement of these particles increases with an increase in temperature, resulting in an increase in the kinetic energy of the particles.3.

The collisions between these particles and the walls of the container they are in result in the pressure exerted by the gas. The relationship between heat, energy, and temperature as part of the kinetic molecular theory is as follows:Heat is the transfer of energy between different systems, whereas temperature is the measure of the average kinetic energy of the particles in a system. This means that as heat is transferred into a system, the particles in that system will gain kinetic energy, which will lead to an increase in temperature.

To know more about kinetic molecular visit:

https://brainly.com/question/2180310

#SPJ11

Secondary amine is what it is. Option (B3-dimethylbutan-2-amine )'s is the primary organic product created during the following reaction. Thus, if more hydrogen is added to carbon, we will obtain the main product, according to the Markovnikov Rule.

As a result, the main product produced by adding hydrogen to carbon-1, which has a higher concentration of hydrogen, and adding bromine to carbon-2 is 2-bromopropane. When a reaction follows Markovnikov's rule, a chemical or product is said to be a major organic product. The tertiary alkyl iodide is the largest byproduct of the second process, which transforms alcohol into alkyl iodide, while the secondary alkyl iodide is the minor byproduct.

To learn more about hydrogen here,

https://brainly.com/question/24433860

#SPJ4

Percent by mass of potassium in the initial mixture: 35.1%

Molar mass:

In chemistry, the molar mass of a compound is defined as the mass of a sample of that compound divided by the amount of substance. This is the number of moles in that sample measured in moles. Molar mass is a mass, not a molecule, a property of matter.

1.913 gm AgCl = mass / molar mass = 0.384/ 169.87= 0.0022

let x gm KCl and (0.8870 - x) gm NaCl.

x gm KCl = x / 74.55 mole.

(0.8870 - x) gm NaCl = (0.8870 - x) / 58.5 mole.

x / 74.55  + (0.8870 - x) / 58.5 = 0.0022

x + 1.274 * (0.8870 - x) =0.0022 * 74.55

x + 1.274 * (0.8870 - x) =0.16401

0.274 x = 0.16401

x =0.598gm

so mass of  KCl = 0.598 gm

0.598 gm KCl contains = 39 * 0.598 / 74.55 = 0.312 gm potassium.

% of K = 0.312* 100 / 0.8870 = 35.1%

Learn more about molar mass here:

https://brainly.com/question/22997914

#SPJ4

Answer: The chemical name of the covalent compound \(P_4O_9\)  is, tetraphosphorous nonaoxide.

Explanation:

A covalent compound is a compound where the sharing of electrons takes place between elements where both the elements are non-metals.

The naming of covalent compound is given by:

1. The less electronegative element is written first.

2. The more electronegative element is written second. Then a suffix is added with it. The suffix added is '-ide'.

3. If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on.

Hence, the correct name for the compound \(P_4O_9\) which is a covalent compound is, tetraphosphorous nonaoxide.

If the chlorine level is too high, it may cause skin and eye irritation, leading to chemical burns in extreme cases. When p is the pH level and c is the chlorine level, the pH level should be between 7.4 and 7.6 pH units, and the chlorine level should be between 1.0 and 1.5 parts per million (PPM).

Pool owners and maintenance professionals must monitor two of the most important water quality indicators in swimming pools: pH and chlorine levels. These two chemicals are crucial to ensuring that the swimming pool remains a safe and healthy place to swim, and that the water is clean and clear. The pH level should be between 7.4 and 7.6 pH units, according to most water test kits.

pH levels outside this range may cause eye and skin irritation, corrosion of the pool’s surface, and an unbalanced pool. If the pH is too low, it will become acidic, causing skin and eye irritation. If the pH is too high, it can cause scaling, resulting in the formation of calcium deposits that are rough on the pool’s surface.

In general, when the pH is too low, the pool’s chlorine level can drop quickly, and when the pH is too high, the chlorine can become less effective. The chlorine level should be between 1.0 and 1.5 parts per million (PPM), according to most water test kits. Chlorine levels outside this range may cause health problems and increase the risk of waterborne illness. When the chlorine level is too low, the pool may become contaminated, resulting in bacterial growth and the spread of disease.

to know more about water test visit:

https://brainly.com/question/32027377

#SPJ11

Answer:

Explanation:

Let me start with a simple one:

An ice cube ( solid ) changing into water ( a liquid )

Another example:

Dry ice ( solid ) submiling.

HOPE IT HELPES

The solubility of methyl bromide in water at 25°C and a partial pressure of 300 mm Hg can be calculated using Henry's Law. The Henry's Law constant for methyl bromide is given as 0.159 mol/(L atm) at 25°C. By applying the equation for Henry's Law, the solubility of methyl bromide in water can be determined.

Henry's Law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. The equation for Henry's Law is written as:

S = k * P

Where S is the solubility of the gas in the liquid, k is the Henry's Law constant, and P is the partial pressure of the gas. In this case, we are given the Henry's Law constant for methyl bromide as 0.159 mol/(L atm) at 25°C. The partial pressure of methyl bromide is given as 300 mm Hg.

Substituting the values into the equation, we have:

S = 0.159 mol/(L atm) * (300 mm Hg)

To convert mm Hg to atm, we divide by the conversion factor of 760 mm Hg/atm:

S = 0.159 mol/(L atm) * (300 mm Hg / 760 mm Hg/atm)

Simplifying the equation, we find:

S ≈ 0.0628 mol/L

To learn more about Henry's Law click here: brainly.com/question/30636760

#SPJ11

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\ \)

From the question

mass of wood = 44 g

density = 0.531 g/cm³

It's volume is

\(volume = \frac{44}{0.531} \\ = 82.86252354...\)

We have the final answer as

Hope this helps you

9. (80-32)5/9

48×5/9

240/9

26.66°C

9. (90-32)5/9

58×5/9

32.22°C

10 (212-32)5/9

180×5/9

20×5

100°C

Answer:

b

Explanation:

Answer:

B. Color of the solute

Explanation: Study island ;)