consider the following reaction: ca(oh)2(aq) + 2hcl(aq)®2 h2o(l) + cacl2(s) determine the limiting reactant when 1.00 g of each reactant is combined. what is the theoretical yield of h2o?

Answer:3.90

Explanation:

If half life of an isotope is 12 days, then there are about 820.42 transformations in the stomach after the person ate 400 Bq of the isotope.

Using the GI track model information, the number of transformations in Stomach can be calculated as follows :

We know that the half-life of an isotope is defined as the time taken for half of the radioactive atoms to decay.

The decay of the isotope can be represented by the following formula : N(t) = N0e^(-λt)

where:

N(t) = Number of atoms at time t

N0 = Initial number of atoms

λ = Decay constant

t = Time elapsed from the initial time t = 0

For a given isotope, the decay constant is related to the half-life as follows : λ = 0.693/T1/2

where : T1/2 = Half-life time of the isotope

Given that the half-life of the isotope is 12 days, we can calculate the decay constant as follows :

λ = 0.693/12 = 0.0577 day^(-1)

The number of transformations in the stomach can be calculated by using the following formula :

Activity = A0e^(-λt)

where : A0 = Initial activity of the isotope in Bq

λ = Decay constant

t = Time elapsed from the initial time t = 0

Activity = 400 Bq (Given)

Decay constant (λ) = 0.0577 day^(-1)

Time elapsed (t) = Time taken by the isotope to reach the stomach from the time of consumption = 0.17 days (Given by GI track model)

Therefore, the number of transformations in the stomach is :

Activity = A0e^(-λt)A0 = Activity/e^(-λt)A0 = 400 Bq/e^(-0.0577 × 0.17)A0 = 400 Bq/e^(-0.009809)A0 = 447.45 Bq

The number of transformations in the stomach can be calculated as follows :

Number of transformations = Activity decayed per unit time/Disintegration constant

Activity decayed per unit time = A0 - Activity after time elapsed

Activity decayed per unit time = 447.45 - 400 = 47.45 Bq

Disintegration constant = Decay constant = 0.0577 day^(-1)

Therefore, number of transformations = (447.45 - 400) Bq/0.0577 day^(-1)

Number of transformations = 820.42

This means that there are about 820.42 transformations in the stomach after the person ate 400 Bq of the isotope.

To learn more about half-life :

https://brainly.com/question/1160651

#SPJ11

There are 0.0035 moles of Cu+2 in the solution.To find the number of moles of Cu+2 in the solution, we need to use the formula: n = C x V where n is the number of moles, C is the concentration in Molarity, and V is the volume in liters.

First, we need to convert the volume from mL to L:

20.0 mL = 0.020 L

Now we can substitute the given values into the formula:

n = 0.175 M x 0.020 L

n = 0.0035 moles

Since the Cu*2 complex contains one Cu+2 ion, the solution contains 0.0035 moles of Cu+2.

Therefore, the answer is that there are 0.0035 moles of Cu+2 in the solution.

To know about moles :

https://brainly.com/question/30885025

#SPJ11

Answer:

A gas is most soluble in water under conditions of high pressure, and low temperature.

Sewage sludge in the United States contains a mixture of dangerous chemicals that include human waste and various contaminants.

These contaminants can include heavy metals (such as lead, mercury, and cadmium), pathogens (such as bacteria and viruses), pharmaceuticals, pesticides, and other toxic substances. The specific composition of contaminants in sewage sludge can vary depending on factors such as the source of the sewage and the treatment processes it has undergone. Proper treatment and disposal of sewage sludge are important to minimize the potential environmental and health risks associated with these hazardous substances.

Learn more about pathogens here:

https://brainly.com/question/30591454

#SPJ11

Explanation:

the first question's answer is a

the second question's answer is c

70 ml would be the stroke volume (SV) every beat.

Given,

End Diastolic Volume(EDV) = 120 ml/beat

End Systolic Volume(ESV) = 50 ml/beat

According to the formula

Stroke volume = End Diastolic Volume(EDV) - End Systolic Volume(ESV)

Stoke volume = 120 ml/beat - 50 ml/beat

Stroke volume = 70 ml/beat

The amount of blood in the ventricles just before the heart contracts is known as end-diastolic volume.

End-systolic volume (ESV) is the amount of blood in a ventricle at the point where systole, or contraction, ends and diastole, or filling, begins.

At any time during the cardiac cycle, the ESV has the lowest blood volume in the ventricle.

The amount of blood that is pumped out of the left ventricle of the heart with each systolic cardiac contraction is referred to as the stroke volume.

Learn more about stroke volume here https://brainly.com/question/19584309

#SPJ1

Answer:

The word that best characterizes the Pardoner in this passage is hypocritical.

Explanation:

The Pardoner is against avarice, but as it turns out, he himself commits this sin.

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

For more such questions on charge visit:

https://brainly.com/question/18102056

#SPJ8

Answer:

carbon-14

Explanation:

becouse protons and neutrons are nagetivly charged

3.

1. 2Fe + 3Cu(NO₃)₂⇒ 2Fe(NO₃)₃ + 3Cu

2. Zn + Cu(NO₃)₂⇒ Zn(NO₃)₂ + Cu

3. 3Zn + 2Fe(NO₃)₃⇒ 3Zn(NO₃)₂ + 2Fe

4. Fe³⁺ reduced to Fe (oxidation number from +3 to 0)

Metal(s) acted as reducing agents : Zn

Further explanation

There are two types of chemical reactions that may occur,  

single-replacement reactions and double-replacement reactions.

A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

Not all of these reactions can occur. We can use the activity series, which is a list of elements that can replace other elements below / to the right of them in a single replacement reaction.

This series is better known as the Volta series, where the metal element with a more negative electrode potential is on the left, while the element with a more positive electrode potential on the right.

The more left the position of a metal in the series, the more reactive metal (easy to release electrons, the stronger the reduction)

Generally, the Volta series used is

Li K Ba Sr Ca Na Mg Al Mn Zn Cr Fe Cd Co Ni Sn Pb H Sb Bi Cu Hg Ag Pt Au

3.

Fe and Zn element can replace the Cu element, which is on the right side so the reaction will occur

Zn also can replace Fe which is on the right side

1. 2Fe + 3Cu(NO₃)₂⇒ 2Fe(NO₃)₃ + 3Cu

2. Zn + Cu(NO₃)₂⇒ Zn(NO₃)₂ + Cu

3. 3Zn + 2Fe(NO₃)₃⇒ 3Zn(NO₃)₂ + 2Fe

4. Yes, Fe³⁺ reduced to Fe (oxidation number from +3 to 0)

Metal(s) acted as reducing agents : Zn

Answer:

2

Explanation:

cause it is what it is :> mark me brainlest

Answer:

A-two

Explanation:

To identify any formal charges in acetylcholine and use the "+" and "-" tools to add any missing formal charges, follow these steps:
1. Determine the total number of valence electrons for each atom in the molecule.
2. Assign electrons to each atom according to the Lewis structure rules.
3. Calculate the formal charge for each atom using the formula: Formal Charge = Valence Electrons - (0.5 x Bonding Electrons + Non-Bonding Electrons).

Since a drawing of acetylcholine was not provided, I cannot add the missing formal charges directly to the drawing. However, I can still help you identify the formal charges in the molecule.
Acetylcholine consists of a quaternary ammonium cation and a carboxylate anion:
Cation:
- Nitrogen (N) atom in the center with four covalent bonds and a formal charge of +1
- Three methyl (CH3) groups bonded to N with no formal charges
- One acetyl (CH3COO-) group bonded to N with a formal charge of -1 on the oxygen atom with a single bond to the carbon
Anion:
- One carboxylate group (CH3COO-) with a formal charge of -1 on the oxygen atom with a single bond to the carbon
In summary, acetylcholine has three atoms with formal charges: +1 on the central nitrogen atom and -1 on two oxygen atoms.

You can learn more about acetylcholine at: https://brainly.com/question/19581612

#SPJ11

The main function of a phosphatase enzyme is to remove a phosphate group from a substrate molecule and the type of modification that it remove from a substrate is dephosphorylation.

Dephosphorylation is a type of post-translational modification, which involves the addition or removal of chemical groups from proteins or other molecules after they have been synthesized.

Phosphatase enzymes are involved in a wide range of cellular processes, including signal transduction, cell cycle regulation, and metabolism.

They help to control the activity and function of proteins by modulating their phosphorylation status, which can affect their conformation, localization, and interactions with other molecules.

By removing phosphate groups from substrates, phosphatase enzymes can reverse the effects of protein kinases, which add phosphate groups to proteins through the process of phosphorylation.

This process of phosphorylation and dephosphorylation is an important mechanism for regulating protein activity and signaling pathways within cells.

To learn more about phosphatase, click here:

https://brainly.com/question/13050583

#SPJ11

Answer:

the answer would be to your problem here is 90g

Explanation:

Answer:

A

Explanation:

potassium because it has valance electrons by giving out proteins

Glucose is the simplest sugar and carbohydrate that provides energy. The simplified model of glucose (C₆H₁₂O₆) shows carbon, hydrogen, and oxygen atoms linked together.

Glucose is an example of a carbohydrate macromolecule that is further classified as a monosaccharide. They are crystalline and fundamental units of carbohydrates.

The molecular formula of glucose is C₆H₁₂O₆ and the mass is 180.156 g/mol. It is an aldohexose that contains an aldehydic functional group. In its structure, there are six oxygen atoms, six carbon atoms, and twelve hydrogen atoms.

Therefore, the glucose molecule is composed of C, H, and O.

Learn more about glucose here:

https://brainly.com/question/2396657

#SPJ1

Answer:

Tectonic plates

Explanation:

All the natural disasters like earthquakes, volcanoes and geysers appear throughout the region of New Zealand because of the movement of tectonic plates underneath the surface. New Zealand rests on the edges of two tectonic plates including the Pacific and the Australian plates.

The question is about the systematic evaluation of materials for post-combustion CO2 capture in a temperature swing adsorption process.

In a temperature swing adsorption process for post-combustion CO2 capture, materials are evaluated systematically to determine their effectiveness in capturing CO2. Here is a step-by-step explanation of the process:

1. Material selection: Various materials, such as zeolites, activated carbon, metal-organic frameworks (MOFs), and amine-based sorbents, are considered for CO2 capture. Each material has different properties and adsorption capacities.

2. Screening: The selected materials are screened based on specific criteria, such as CO2 adsorption capacity, selectivity, stability, and cost. This helps narrow down the choices to the most promising candidates.

3. Bench-scale testing: The selected materials undergo bench-scale testing to evaluate their performance under controlled conditions. This involves measuring the CO2 adsorption capacity, kinetics, and regeneration efficiency of each material.

4. Process modeling: Computer simulations are used to model the temperature swing adsorption process with different materials. This helps predict the overall performance of the system, including CO2 capture efficiency, energy requirements, and process optimization.

5. Pilot-scale testing: The most promising materials are then tested at a larger scale in a pilot plant. This helps validate their performance and assess any challenges or limitations that may arise during practical implementation.

6. Techno-economic analysis: The performance data obtained from the pilot-scale testing is used to conduct a techno-economic analysis. This involves evaluating the cost-effectiveness of the materials, including their initial investment, operating costs, and potential for scaling up.

7. Material optimization: Based on the results of the evaluations and analysis, further modifications or improvements can be made to the materials to enhance their performance, stability, or cost-effectiveness.

By following this systematic evaluation process, researchers and engineers can identify the most suitable materials for post-combustion CO2 capture in a temperature swing adsorption process.

Learn more about temperature swing adsorption process: https://brainly.com/question/11193912

#SPJ11

The type of reaction which occurs when the oxidation numbers of 2 or more atoms change is an oxidation-reduction{redox} reaction.

A redox (redox) reaction is a type of chemical reaction in which electrons are transferred between two species redox reaction is a chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

There  are 2 classes of redox reactions  which are:

electron transfer where electrons flow from the reducing agent  to the oxidant

atom transfer atom transfers an atom from one substrate to another

There are different types of redox reactions which are:

To learn more about redox reactions see:

https://brainly.com/question/11965624?referrer=searchResults

#SJP4

Explanation:

We are given different isotopes and we have to identify the number of protons and neutrons that are in the nuclueus of each atom.

a) Carbon-14:

By definition two isotopes are atoms that have the same atomic number but different mass number. The atomic number of an atom is equal to the number of protons of that atom, and the mass number is equal to the number of protons plus the number of neutrons.

atomic number = n° of protons

mass number = n° of protons + n° of neutrons

n° of protons = atomic number

n° of neutrons = mass number - n° of protons

n° of neutrons = mass number - atomic number

If two isotopes have the same atomic number but different mass number we can say that two isotopes have the same number of protons but different number of neutrons.

In we pay attention to carbon-14 we can look for its atomic number in the period table: 6. And its mass number is the one that we are given after the name of the element: 14.

n° of protons = atomic number = 6

n° of protons = 6

n° of neutrons = mass number - atomic number = 14 - 6

n° of neutrons = 8

b) Cobalt-60:

atomic number = 27 (from the periodic table)

mass number = 60

n° of protons = atomic number = 27

n° of protons = 27

n° of neutrons = mass number - atomic number = 60 - 27

n° of neutrons = 33

c) Gold-197:

atomic number = 79 (from the periodic table)

mass number = 197

n° of protons = atomic number = 79

n° of protons = 79

n° of neutrons = mass number - atomic number = 197 - 79

n° of neutrons = 118

d) Uranium-235:

atomic number = 92 (from the periodic table)

mass number = 235

n° of protons = atomic number = 92

n° of protons = 92

n° of neutrons = mass number - atomic number = 235 - 92

n° of neutrons = 143

Answer:

a) Carbon-14: n° of protons = 6 n° of neutrons = 8

b) Cobalt-60: n° of protons = 27 n° of neutrons = 33

c) Gold-197: n° of protons = 79 n° of neutrons = 118

d) Uranium-235: n° of protons = 92 n° of neutrons = 143

A change in pressure will have an effect on gaseous equilibria. The correct answer is (B) gaseous equilibria.

This is because changes in pressure can affect the concentration of gas molecules, which can alter the equilibrium position.

For example, an increase in pressure will shift the equilibrium towards the side with fewer moles of gas, while a decrease in pressure will shift the equilibrium towards the side with more moles of gas.

It is important to note that changes in pressure do not affect the equilibrium constant, only the position of the equilibrium.

The gas equilibrium constants relate to the equilibrium (K) because they are both derived from the ideal gas law (PV = nRT)

To know more about gaseous equilibria, refer here:

https://brainly.com/question/17319147#

#SPJ11

\([\text{H}^{+}] = 10^{-\text{pH}}\)

\([\text{H}^{+}] = 10^{-1.65}\)

\(\boxed{[\text{H}^{+}] = 2.2 × 10^{-2} \: M}\)

#ILoveChemistry

#ILoveYouShaina

Answer:

false

Explanation:

Theres many minerals useful to the body

Answer:

False

Explanation:

There are a lot of minerals that are useful for the human body including the following

and I think you get where I am going with this!

(have a wonderful day!)

Answer:

D Trigonal pyramidal

Explanation went over in class:

Answer:

D. Trigonal pyramidal

Explanation:

A P E X !

The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:

Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)

= 144.12 + 22.22 + 176.00

= 342.34 g/mol

Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:

Number of moles of Kool Aid powder = Mass / Molar mass

= 4.25 g / 342.34 g/mol

≈ 0.0124 mol

Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:

Number of moles of sugar = Mass / Molar mass

= 192.00 g / 342.34 g/mol

≈ 0.5612 mol

Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:

Volume of water = 2.00 quarts * (1.06 liters / 1 quart)

= 2.12 liters

To find the molarity, we use the formula:

Molarity (M) = Number of moles / Volume (in liters)

Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L

≈ 0.286 M

To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.

Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:

(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:

(C M)(V mL) = (0.286 M)(65 mL)

V mL = (0.286 M)(65 mL) / C M

So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

For more such questions on concentrated visit:

https://brainly.com/question/28564792

#SPJ8

The final concentrations of water, isopentyl acetate, isopentyl alcohol, and acetic acid obtained on using equilibrium expression are 3.4M, 3.4M, 0.6M , 4.6M

Using ICE table:-

      Acetic acid  +  Isopentyl alcohol   ------>    Isopentyl acetate +  water

I         8M                   4M                                           0                           0

C        8-x                   4-x                                          +x                          +x                      

E        8-x                   4-x                                          +x                          +x

Equilibrium constant (Keq) = 4.2

On using the equilibrium expression -

Keq = [Product] / [Reactant]

Keq = x^2 / (8-x) (4-x )

4.2  =  x^2 / 32 - 8x - 4x + x^2

    x =  3.4

Concentration of acetic acid  = 8-x = 8-3.4 = 4.6M

Concentration of isopentyl alcohol = 4-x = 4-3.4 = 0.6M

Concentration of isopentyl acetate = x = 3.4M

Concentration of water = x = 3.4M

Learn more about equilibrium expression

https://brainly.com/question/14751091

#SPJ4

Answer:

1. copper is a pure substance

2. sugar dissolved in solution (sometimes called a homogeneous mixture) is a mixture of sugar and water (the sugar and water don't react with each other)

3. carbon dioxide is a pure substance because there are only CO2 molecules

4. seawater is a mixture of salt, water, and other things

To calculate the percentage yield of a reaction, you need to know the theoretical yield (the maximum amount of product that can be produced based on the stoichiometry of the reactants) and the actual yield (the amount of product that is actually produced in the reaction).

The balanced equation for the combustion of hydrogen gas (H2) with oxygen gas (O2) to form water vapour (H2O) is:

2H2 + O2 -> 2H2O

From the balanced equation, we can see that for every 2 moles of H2, 1 mole of H2O is produced. To convert 4 grams of H2 to moles, we use the molar mass of H2 which is 2.016 g/mol.

4g / 2.016 g/mol = 1.98 moles

Now we can calculate the theoretical yield of H2O. Since 2 moles of H2O are produced for every 2 moles of H2, the theoretical yield of H2O is:

1.98 moles x (2 moles H2O / 2 moles H2) = 1.98 moles

The molar mass of H2O is 18.02 g/mol, we can convert the theoretical yield of H2O from moles to grams:

1.98 moles x 18.02 g/mol = 35.7 g

To calculate the percentage yield, we divide the actual yield (18 g) by the theoretical yield (35.7 g) and multiply by 100:

(18 g / 35.7 g) x 100 = 50.5 %

Therefore, the percentage yield of the reaction is 50.5%.

Learn more about Percentage Yield here: https://brainly.com/question/29714892

#SPJ4