Calculate the molar solubility of barium fluoride in each liquid or solution * K_sp = 2.45 x 10^-5 Pure water 0.10 M Ba(NO_3)_2 0.15 M NaF

The value of K_eq for this reaction is approximately 1.805 × 10^-5.

To find the value of the equilibrium constant (K_eq) for the given reaction, we can use the equilibrium concentrations of the species involved. The equilibrium constant expression for the reaction is:

K_eq = [CH3COO-][H3O+] / [CH3COOH]

Given the following concentrations at equilibrium:

[CH3COOH] = 2.0 × 10^-1 M

[CH3COO-] = 1.9 × 10^-3 M

[H3O+] = 1.9 × 10^-3 M

Substituting these values into the equilibrium constant expression, we get:

K_eq = (1.9 × 10^-3)(1.9 × 10^-3) / (2.0 × 10^-1)

K_eq = 3.61 × 10^-6 / 2.0 × 10^-1

K_eq = 3.61 × 10^-6 × 5.0 × 10^0

K_eq = 1.805 × 10^-5

Therefore, the value of K_eq for this reaction is approximately 1.805 × 10^-5.

None of the provided answer choices match this value exactly.

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Answer:

0.32 moles of H2

Explanation:

I will assume the question concerns the production of water from hydrogen and oxygen(?).  If theis is correct, start with a balanced chemical reaction.

O2 + 2H2 = 2H2O  

2 O and 4 H on both sides of the reaction: it is balanced.

The balanced equation tells us we need 2 moles of H2 for every 2 moles of H2O, a 1:1 molar ratio.  If we want 4 moles of H2O, we'd need 4 moles of H2.

If we want 0.32 moles of H2O, we need 0.32 moles of H2.

Answer:

https://quizlet.com/259730102/chemistry-unit-10-flash-cards/

Explanation:

The correct question to ask about group 16 elements is; "Will group 16 elements gain electrons to bond with group 2 in an XY format?"

A chemical element is a species of atoms that have a given number of protons in their nuclei, including the pure substance consisting only of that species.

Group 16 elements are known to be divalent and they form divalent negative ions.

The periodic table is arranged in groups and periods. All elements in the same group must have the same number of valence electrons. All elements in group 2 have six valence electrons.

In conclusion, if a student is to write an ionic compound’s formula that contains a group 16/6a nonmetal. The student must ask :

Will group 16 elements gain electrons to bond with group 2 in an XY format?".

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The full question is:

What question would a student need to ask to form a compound with Group 16 nonmetals

A.

Will group 16 elements lose electrons to bond with group 2 in an XY format?

B.

Will group 16 elements gain electrons to bond with group 1 in an XY2 format?

C.

Will group 16 elements gain electrons to bond with group 2 in an XY format?

D.

Will group 16 elements lose electrons to bond with group 1 in an X2Y format?

A characteristic which distinguishes a true solid from other phases of matter at STP is that in as a true solid the particles are Vibrating without changing the relative positions.

Relatively positioned component is one that has a relative calculated position value. The top and bottom characteristics define the vertical attenuation from the regular place, whereas the left and right characteristics characterise the horizontal offset. A relative element is one that has been placed relative to its regular place. Establishing the top, right, bottom, and left features of a relatively-positioned component begins to move it away out of its normal position. Those certain material will not be resampled to fill any gaps left by element. The corresponding angle is the angle that occupies the very same relative position at every crossroads of a cross - cutting line with two parallel lines.

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Another product: CO₂

Given

Reaction

2C₄H₁₀ + 13O₂⇒ 8__+ 10H₂O

Required

product compound

Solution

In the combustion of hydrocarbons there can be 2 kinds of products

If there is excess Oxygen, you will get Carbon dioxide(CO₂) and water in the product

If Oxygen is low, you'll get Carbon monoxide(CO) and water

Or in other ways, we can use the principle of the law of conservation of mass which is also related to the number of atoms in the reactants and in the products

if we look at the reaction above, there are C atoms on the left (reactants), so that in the product there will also be C atoms with the same number of C atoms on the left

2C₄H₁₀ + 13O₂⇒ 8CO₂+ 10H₂O

Answer:

is C. CO2

Explanation:

The volumetric gas feed rate to the reactor at a temperature of 600C and a reactor pressure of 100 atm is 202.52 ft³/h.

According to the stoichiometry of the given reaction,

     N₂ + 3H₂ → 2NH₃

2 moles of ammonia are produced from one mole of nitrogen.

Given that the reactor produces 1000 1bmol/h of ammonia.

So, moles of nitrogen getting converted to the product = 1000/2 =500

Which is just 25 percent of the number of moles of  N₂ fed into the reactor.

Thus, moles of nitrogen feed to the reactor per hour = x

25/100 x = 500

           x =2000

Thus, 2000 moles of nitrogen are fed per hour to the reactor.

Moles of hydrogen added per hour to the reactor = 3 x 2000 = 6000 mol

Thus, the total number of moles of gases fed into the reactor per hour = (2000+6000) = 8000 mol per hour

Thus, the volumetric flow rate of the gas into the reactor can be calculated by using the ideal gas equation as

PV = nRT

 V = nRT/P

 V = (8000 mol/h)(0.0821 Latm/molK)(600 + 273)K/100 atm

 V = 5733.864 L/h

1 m = 3.281 ft

Thus, 1m³= (3.281)³ At³ = 35.32 At³

Thus, 1 L = 35.32 x10⁻³ ft³

Thus, the volumetric flow rate in ft /h can be calculated as:

5733.864 L/h = 35.32 x 10⁻³ x 5733.864 ft³ /h

                      = 202.52 ft³/h

Your question is incomplete but most probably your full question was:

Nitrogen and Hydrogen are fed at a 1:3 molar ratio to an ammonia synthesis reactor operating at T = 600 C and P = 100 atm, where the following reaction takes place:

N2 + 3H2 -----> 2NH3

25% of the N2 fed is converted to ammonia and the reactor produces 1000 lbmol/hour of NH3. The reactor operates at steady state. Calculate the volumetric gas feed rate to the reactor(ft^3/hour), at the reactor temperature and pressure.

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Explanation:

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Answer:

63.5 g

Explanation:

Given data:

Number of moles of iodine needed = 0.250 mol

Mass to be measured = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of diatomic iodine = 253.8 g/mol

by putting values,

0.250 mol = mass / 253.8 g/mol

Mass = 0.250 mol × 253.8 g/mol

Mass = 63.5 g

Thus, student need to be measured 63.5 g of iodine.

Uranium is a radioactive substance, which is extremely reactive. As a consequence, it cannot be found in the environment in its elemental state. During uranium, mining disturbances can influence both the quality and quantity of the surface water.

Several of the effects of uranium mining are identical to those experienced in other kinds of mining.

Due to the harmful effects of radioactive substances, the uranium mining for the use of nuclear energy has the greatest environmental influence.

The table that matches the diagram is the third answer.

It says negative particles are red. Electrons are negative particles, and the third answer is the only answer that matches Electrons with the color red. So it is the third answer.

Hope It Helps!

Answer:

The table that matches the diagram is the third answer.

It says negative particles are red. Electrons are negative particles, and the third answer is the only answer that matches Electrons with the color red.

Zoloft (sertraline) comes under Selective serotonin reuptake inhibitor (SSRI) antidepressants

Mellaril (thioridazine) comes under Typical antipsychotics

Thorazine (chlorpromazine)comes under Typical antipsychotics

Valium (diazepam)comes under Anti-anxiety agents

By raising serotonin levels in the brain, SSRIs alleviate depression. One of the chemical messengers, or neurotransmitters, that communicate between brain nerve cells is serotonin (neurons). Serotonin reabsorption (reuptake) into neurons is inhibited by SSRIs.

Typical antipsychotics can be used to treat conditions like extreme agitation or schizophrenia.

a medication used to alleviate anxiety symptoms such the fear, dread, unease, and tightness in the muscles that can happen when under stress. The majority of anti-anxiety medications prevent particular nervous system molecules from acting. Additionally known as anxiolytic and anxiolytic agent.

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Answer:

Option B. 126.68 amu

Explanation:

The following data were obtained from the question:

Isotope A (¹²⁷X):

Mass of A = 127

Abundance (A%) = 80%

Isotope B (¹²⁶X):

Mass of B = 126

Abundance (B%) = 17%

Isotope C (¹²⁸X):

Mass of C = 128

Abundance (C%) = 3%

Average atomic mass of element X =.?

Th4 average atomic mass of X can be obtained as follow:

Average atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]

= [(127 × 80)/100] + [(126 × 17)/100] + [(128 × 3)/100]

= 101.6 + 21.42 + 3.84

= 126.68 amu

Therefore, the average atomic mass of X is 126.68 amu

It is important to have endothermic and exothermic processes in building materials of your train because, this is to absorb and release heat to make the train run faster.

Wood burning heaters and steam engines release heat energy in an exothermic reaction. A train that used to be powered by a steam engine. Therefore, since heat is used, the heat balance is important. A steam engine absorbs energy during the boiling phase of water.

This is an endothermic reaction. If steam is used to actuate the piston, its energy must be released by actuating the train. Excess energy is released into the chimney as flue gas. This is an exothermic process as it releases energy into its surroundings.

Exothermic reactions are important in forensics, especially in fire and explosion investigations. Conversely, if a chemical reaction requires heat (instead of producing heat) and results in cooling of the surrounding environment, it is said to be endothermic.

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Both sand and potting soil are mixtures because they both contains more than one type of substances. Both are composed of minerals and different substrates.

Mixtures are substance formed by the combination of two or more components. The mixtures can be homogenous or heterogenous. Homogenous mixtures contains only one phase.

Heterogenous mixtures are of components with different phases. Sand is an example of heterogenous mixture. The major component of sand is silicon dioxide. it also contains grains of other minerals.

Potting soil is a mix of soil and minerals used for plantation. It also known as potting compost since it contains wood products, vermiculates, clay etc. Therefore, potting soil is a mixture.

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Charles law states that there is a directly proportional relationship between the volume and the temperature of the gas at certain pressure.

Therefore,

V1/T1 = V2/T2

V1 is unknown

T1 = 159K

V2 = 15.5m3

T2 = 456K

V1/159 = 15.5/456

V1 = (15.5*159)/456 = 5.404m3.

When the volume of a gas is changed from 5.404 m3 to 15.5 m3 the temperature will change from 159 K to 456 K.

Hence, the mass flow rate of the refrigerant is 0.252 kg/s.

The mass flow rate of refrigerant for the given evaporator pressure, the temperature of saturated liquid at the condenser outlet, the tube diameter, and the degree of superheat, we need to use the energy balance equation. From the information given, the enthalpy of the saturated liquid at the condenser outlet is found to be 367 kJ/kg.

Similarly, the enthalpy of the refrigerant leaving the evaporator is found to be 296.8 kJ/kg.

Thus, the change in enthalpy for the process can be calculated as:

∆h = h2 – h1

∆h = 296.8 – 367

∆h = – 70.2 kJ/kg

Using the energy balance equation, we get;

Q = m . ∆h

Where

Q = heat transfer rate

Q = 5 tons

Q = 176.4 kW

For R-410A,

specific heat = 0.0387 kJ/kg K

Therefore, we can say that,

Q = m . ∆h= m . cp . ∆t

Where ∆t = temperature difference = 60 – 10 = 50 K

Therefore, the mass flow rate of refrigerant = Q / (cp . ∆t)

= 176400 / (0.0387 × 50)

= 909.45 kg/h

= 909.45 / 3600 kg/s

= 0.252 kg/s.

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The following statement is NOT true of nitroglycerin is "c) Sublingual nitroglycerin is a stable medication and is effective until the expiration date whether the bottle has been opened or not."   The correct answer is option C.

Explanation: Nitroglycerin is a potent vasodilator that is often used in the treatment of angina. Nitroglycerin is a nitrate medication that is used to treat angina and other heart conditions. The side effects of nitroglycerin include headache, hypotension, and tachycardia, among others. When using sublingual nitroglycerin, the patient should have a moist mouth so that the medication will dissolve. Nitroglycerin is not a stable medication, and it is not effective until the expiration date whether the bottle has been opened or not. The shelf life of nitroglycerin is around six months. Nicotinic acid is a true statement. Nicotinic acid, also known as niacin, is a B vitamin that is used to treat high cholesterol and triglyceride levels.

The correct answer is option C.

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The aqueous solutions can be arranged in increasing boiling point order as follows: 0.050m Al(ClO4)3 < 0.110m K2CO3 < 0.300m C6H12O6.

The boiling point of a solution is influenced by the concentration of solute particles in the solution. The greater the concentration of solute particles, the higher the boiling point. In this case, we are comparing the boiling points of three different aqueous solutions.

The solution with the lowest boiling point is 0.050m Al(ClO4)3. This is because Al(ClO4)3 is an ionic compound that dissociates into multiple ions in water, thereby increasing the number of solute particles. Higher concentration of solute particles raises the boiling point.

The solution with the next higher boiling point is 0.110m K2CO3. K2CO3 is also an ionic compound and dissociates into two ions in water. Although the concentration is higher compared to Al(ClO4)3, it is lower than that of C6H12O6.

The solution with the highest boiling point is 0.300m C6H12O6. C6H12O6, which is glucose, is a molecular compound and does not dissociate into ions in water. Therefore, it has the lowest concentration of solute particles among the given solutions, resulting in the lowest boiling point.

Hence, the correct order of increasing boiling points is 0.050m Al(ClO4)3 < 0.110m K2CO3 < 0.300m C6H12O6.

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The correct step would be to place a bag containing a 30% salt solution into a beaker containing a 10% salt solution. Option B.

Water molecules will always move from the region of low solute concentration or high water potential to the region of high solute concentration or low water potential through a semi-permeable membrane.

Thus, in order to model the net movement of water into a cell using a semi-permeable bag, the bag must contain a higher solute concentration than the surrounding solution.

In other words, placing a bag containing 30% salt solution into a beaker containing 10% salt solution will result in the net movement of water into the bag. The bag is modeling the cell.

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Answer:

1024.24 K

Explanation:

From the question,

Applying the general gas eqaution

PV/T = P'V'/T'.................... Equation 1

Where P, V, and T = Initial pressure, initial volume and initial Temperature of the gas respectively,  P', V' and T' = Final pressure, Final Volume and Final temperature of the gas respectively

make T' the subject of the equation

T' = P'V'T/(PV).................... Equation 2

Given: P = 1220 mmHg, V = 85 mL, P' = 836 mmHg, V' = 350 mL, T = 363 K

Substitute these value into equation 2

T' = (836×350×363)/(1220×85)

T' = 1024.24 K

Answer: C.  Waves don't move matter, just energy.

Explanation:

Answer:

5 N left

Explanation:

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Explanation:

When writing chemical equations for reversible reactions, the usual one-way arrow is not used. Instead, two arrows are used, each with just half an arrowhead - the top one pointing right, and the bottom one pointing left.

For example:

ammonium~chloride \rightleftharpoons ammonia + hydrogen~chloride

NH_{4}Cl(s) \rightleftharpoons NH_{3}(g) + HCl(g)

Answer:

MgCl₂ + H₂ ---> 2 HCl + Mg

Explanation:

Since you have not given any products, I am going to assume that this is a single-displacement reaction. In these types of reactions, an element is being swapped for another in a compound. The unbalanced equation would look like this:

MgCl₂ + H₂ ---> HCl + Mg

Mg does not have a subscript of 2 because it can exist by itself. As you can see, the reaction is not balanced. On the left side, there is 1 Mg, 2 Cl, and 3 H. On the right side, there is only 1 of each. The balanced equation would look like this:

MgCl₂ + H₂ ---> 2 HCl + Mg

Now, there is 1 Mg, 2 Cl, and 2 H on both sides.

The 25 mL is the calibration of this Erlenmeyer flask. so, option (b) is correct.

What is calibration ?

The process of calibrating a measurement instrument involves comparing it to a traceable reference device and documenting the comparison. A "calibrator" is another name for the reference standard. It stands to reason that the reference is more accurate than the calibration instrument.

What is  Erlenmeyer flask?

Erlenmeyer flasks are used to mix, heat, cool, incubate, filter, store, and perform various liquid-handling operations on liquids. For titrations and boiling liquids, their sloping sides and narrow necks enable the contents to be blended by swirling without the risk of spillage.

Therefore, 25 mL is the calibration of this Erlenmeyer flask.

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Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the correct option is option A.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

According to the idea of cross-cutting relationships, a fault or intrusion is newer than the rocks it slices. … As a result, the defect must be the most recent formation visible. Because the intrusion (D) breaks through three sedimentary rock strata, it must be younger.

Therefore, the correct option is option A.

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The correct answer choice from the statement above about investigated factors from lab results is :

Students who spend less time studying after school get lower math grade

Option D is the correct answer

This is an online platform where mathematics tutors help students to solve their difficulties in mathematics.

Mathematics is one of the most important aspect of knowledge in the education.

So therefore, The correct answer choice from the statement above about investigated factors from lab results is :

Students who spend less time studying after school get lower math grade

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Answer:

Getting carried down a moutain side or a cliff and they are relocated.

Explanation:

Glaciers are responsible for moving rocks from one place to another

Answer:

integral of 17 tan*(x) x dx = uv - integral of v du

= (17 tan*(x))(1/2)x^2 - integral of (1/2)x^2 (17 sec^2(x) dx)

= (17/2) tan*(x) x^2 - (17/4) integral of sec^2(x) dx

= (17/2) tan*(x) x^2 - (17/4) tan(x) + C

where C is the constant of integration.

For the second integral, the integral of (64 + e^x)dx, we can integrate each term separately. The integral of 64 dx is simply 64x, and the integral of e^x dx is e^x. Therefore,

integral of (64 + e^x) dx = 64x

Explanation:

Answer has the explaination.

To evaluate the integral of 17 tan(x) x dx, we can use integration by substitution.

Let u = tan(x), then du/dx = sec^2(x) and dx = du/sec^2(x). Substituting these into the integral gives 17∫u du. Integrating u with respect to itself gives (17/2)u^2 + C. Substituting u = tan(x) back in gives the final answer of (17/2)tan^2(x) + C. Don't forget to include the absolute value of tan(x) when necessary. To evaluate the integral, first note the given function: 17tan(x) x^2 dx. We can apply integration by parts, using the formula ∫u dv = uv - ∫v du. Let u = x^2, so du = 2x dx, and let dv = 17tan(x) dx, so v = 17∫tan(x) dx = -17ln|cos(x)|.
Now, uv - ∫v du = -17x^2ln|cos(x)| - ∫(-17ln|cos(x)|)(2x dx). Next, apply integration by parts again on ∫(-17ln|cos(x)|)(2x dx), with u = 2x and dv = -17ln|cos(x)| dx.
Simplify and combine terms, then add C for the constant of integration to obtain the final answer.

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