start by giving the mlnxm shorthand for each complex. then, determine the metal oxidation state, dn electron count, and total valence electron count of the following complexes: a. fe(co)6 b. [co(en)2cl2] c. (ticp2cl)2 d. rh(pph3)3cl e. [(mecn)hgme] f. oso

A

think of this way: in Florida and many other costal places, people have sand in their backyards to limit flooding and things due to being so close to the ocean.

Answer: The volume of oxygen that would be needed to completely burn

75.0 liters of acetylene \(C_{2} H_{2}\) at STP is 187.5 liters.

Definition of volume : -Volume is the amount of space occupied by a substance, while mass is the amount of matter it contains.  The units of volume are liter, milliliter,  

Definition of STP : Standard temperature and pressure (STP) refers to the nominal conditions in the atmosphere at sea level. These conditions are 0 degrees Celsius and 1 atmosphere (atm) of pressure. The STP value is important to physicists, chemists, engineers, pilots and navigators, among others.

Explanation: Given : Volume of acetylene  \(C_{2} H_{2}\)  = \(75\) liters.

When oxygen is burnt in acetylene , the chemical reaction is given as:

\(C{2} H_{2} + \frac{5}{2} O_{2} = 2CO_{2} +H_{2O}\)

So, for \(75\) liters of acetylene Volume of oxygen required = \(\frac{5}{2}\) × \(75\) = \(187.5\) liters.

Final answer : The volume in liters of oxygen that would be needed to completely burn 75.0 liters of acetylene \(C_{2} H_{2}\) at STP is 187.5 liters

Answer:

To calculate the pH of a buffer solution, we need to know the concentrations of both the acid and its conjugate base (salt). In this case, we are given that the concentration of acid is 10 times the concentration of the salt.

Let's assume the concentration of the salt is "x" (in any suitable unit). Therefore, the concentration of the acid would be 10x.

In a buffer solution, the pH is determined by the ratio of the concentrations of the acid and its conjugate base (salt). We can use the Henderson-Hasselbalch equation to calculate the pH:

pH = pKa + log([A-]/[HA])

In this equation, pKa is the negative logarithm of the acid dissociation constant (Ka), and [A-] and [HA] are the concentrations of the conjugate base and acid, respectively.

Since the concentration of the acid is 10x and the concentration of the salt is x, we can rewrite the equation as:

pH = pKa + log(x/(10x))

Simplifying further:

pH = pKa + log(1/10)

The log(1/10) is equal to -1, so the equation becomes:

pH = pKa - 1

Without knowing the specific pKa value for the acid-salt pair in the buffer solution, we cannot determine the exact pH. However, if we have the pKa value, we can subtract 1 from it to find the pH of the buffer solution.

Explanation:

b

The empirical formula of polyethylene can be determined by converting the given percentages of carbon (C) and hydrogen (H) into grams. To find the grams of each element, we assume a 100.0 g sample of polyethylene.

For carbon:

Mass of carbon = 86.0% × 100.0 g = 86.0 g

For hydrogen:

Mass of hydrogen = 14.0% × 100.0 g = 14.0 g

Therefore, in a 100.0 g sample of polyethylene, there are 86.0 grams of carbon and 14.0 grams of hydrogen.

The empirical formula of a compound represents the simplest whole-number ratio of atoms present in the compound. To determine the empirical formula, we need to find the ratio of carbon to hydrogen in terms of moles.

First, we convert the masses of carbon and hydrogen into moles using their respective molar masses. The molar mass of carbon is approximately 12.01 g/mol, and the molar mass of hydrogen is approximately 1.008 g/mol.

Number of moles of carbon = 86.0 g / 12.01 g/mol ≈ 7.162 mol

Number of moles of hydrogen = 14.0 g / 1.008 g/mol ≈ 13.89 mol

Next, we divide the number of moles of each element by the smallest number of moles to get a simplified ratio.

Carbon: Hydrogen ≈ 7.162 mol : 13.89 mol ≈ 1 : 1.939

Since we want to express the ratio in whole numbers, we multiply both sides by 2 to get a whole number ratio.

Carbon: Hydrogen ≈ 2 : 3.878

Rounding to the nearest whole number, we find that the empirical formula of polyethylene is CH₂.

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Answer:

Ionic bond.

Explanation:

Group 7 elements like Bromine (Br) and group 2 elements like Magnesium,(Mg) involved loss and gain of electrons which is typical with Ionic bonding.

Answer:

C

Explanation:

edge2021!!

Answer:  The correct answer is c. change attitudes, beliefs or values.

Explanation:

Of these goals, the hardest to achieve is changing attitudes, beliefs, and values. It is difficult to convince an audience to truly change their attitudes, beliefs, or values based on your presentation since it typically requires establishing trust and respect on a personal level.

When the alkene is treated with H2O in the presence of H2SO4, the alcohol that is formed is Ethanol with chemical formula C₂H₅OH.

When an alkene is treated with H2O in the presence of H2SO4 (sulfuric acid), an alcohol is formed through the process of hydration. In general, the reaction of an alkene with water and sulfuric acid produces an alcohol that contains one more carbon atom than the original alkene.

Alkene (ethene) reacts with water and H2SO4 to form ethanol, which is the major alcohol that results. Methanol (CH3OH), on the other hand, is not produced from this reaction.

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Answer: 3

Explanation:

It speed up the molecules to get them to bent and move instead of staying solid

Answer:

c

Explanation:

When enough heat energy is transferred to a metal, the molecules vibrate quickly enough so that the solid metal starts to change shape.

(a). Remember that oxides are compounds that are formed by oxygen and another element. Oxygen has always been the 2- ion. So, to write the formula of manganese oxide, you can follow the steps:

You can realize that the algebraic sum of these two ions is +3 (2) + 3 (-2) = 0. The algebraic sum of the ions of each element must be always zero, so the formula of manganese oxide is Mn2O3.

(b). Magnesium has always the ion +2, which is called the oxidation number too. We have that the oxidation numbers of phosphorus are -3, -4, and -5. The name phosphide is telling us that we have to use the less number of ions that phosphorus has, in this case, is -3. So applying the last process ( Part (a) ), we can conclude that the formula of magnesium phosphide is Mg3P2. You can note that the algebraic sum of the ions is: +2 (3) -3 (2) = 0.

A possible rubric for an Emergency Preparedness Plan is given below.

The Criteria will be:

Identification of potential risks and hazards - the plan should identify the types of emergencies that could happen in the community or area, such as natural disasters (hurricanes, floods, earthquakes), power outages, or human-caused incidents (fires, explosions, terrorism).

Communication plan - the plan should include ways to stay informed and communicate with family members, neighbors, and emergency services during an emergency. This could include designated meeting places, communication methods (cell phones, two-way radios), and contact information for emergency services.

Emergency supplies - the plan should include a list of necessary emergency supplies, such as food, water, first aid kits, flashlights, batteries, and blankets, and how to obtain them.

Evacuation plan - the plan should include routes and methods for evacuation, such as cars, buses, or on foot, as well as a designated meeting place for family members.

Family emergency contacts - the plan should include a list of emergency contacts, such as close relatives, friends, and neighbors, who can help during an emergency.

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Answer:

C.) Argon

Explanation:

This is because ionisation energy increases as we move from left to right in a period. Argon presents in the right most column and Argon is a novel gas and has 8 electrons in outermost orbital. So, it is highly stable. I hope I helped! ^-^

Answer:

B, C, E

Explanation:

did usatestprep

When the plunger is pulled out, pressure inside syringe decreases, lower pressure on balloon causes volume to increase,volume of the chamber also increases.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.

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Answer:

it would go be in the middle where u put it

Explanation:

i hope this helps ^^

Answer:

T₂ = 39.4 °K

Explanation:

Because you are only dealing with volume and temperature, you can use Charles' Law to find the missing value. The formula looks like this:

V₁ / T₁ = V₂ / T₂

In this formula, "V₁" and T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature. You have been given values for all of the variables except for "T₂". Therefore, by plugging these values into the formula, you can simplify to find the answer.

V₁ = 350 mL                     T₁ = 45 °K

V₂ = 400 mL                     T₂ = ?

V₁ / T₁ = V₂ / T₂                                        <----- Charles' Law formula

(350 mL)(45 °K) = (400 mL)T₂                <----- Insert values into variables

15750 = (400 mL)T₂                                <----- Multiply left side

39.4 = T₂                                                 <----- Divide both sides by 400

Digital road maps are different from paper and road maps in that they allow users to plan routes before a trip, they can be used anywhere in the world, and they can be updated almost immediately. They also show both major and minor roads in a region.

Digital road maps are a type of digital map that is based on GIS data. This data is collected from various sources and is used to create a detailed representation of the real world.  The digital road map allows the user to zoom in and out and to see different levels of detail, depending on their needs. They also allow the user to search for specific locations, find directions, and plan routes before they begin their trip.

On the other hand, paper maps are usually printed on paper and can be difficult to read in low light conditions. They are also limited in the amount of detail that they can show, and they may not always be up-to-date.

Road maps, on the other hand, are a type of map that shows roads and highways in a region. They may include some additional features such as rest areas, gas stations, and other points of interest. Road maps are typically printed on paper and are often used for navigation while driving. They are not as detailed as digital road maps, and they can quickly become outdated as new roads are built.

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If the MDS (Minimum Data Set) is successfully implemented, several positive outcomes can be expected. The MDS is a standardized assessment tool used in healthcare settings to evaluate the physical, mental, and psychosocial well-being of patients.

Its successful implementation can lead to improved patient care, more efficient resource allocation, and enhanced data analysis.With the MDS in place, healthcare providers can gather consistent and comprehensive data about patients, enabling better understanding of their needs and tailoring of individualized care plans.

This can result in improved treatment outcomes and patient satisfaction. Additionally, the MDS facilitates effective communication and information sharing among healthcare professionals, leading to coordinated care and reduced errors.From a broader perspective, successful implementation of the MDS allows for accurate and reliable data collection, enabling robust research and evidence-based decision-making.

This can contribute to advancements in healthcare practices, policy development, and quality improvement initiatives. Ultimately, the successful implementation of the MDS can enhance patient outcomes, improve healthcare delivery, and drive positive changes in the healthcare system as a whole.

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Answer:

There's no picture, so I can't help witht his, apologies!

Explanation:

The gravimetric factor for Br- using silver bromide is 0.425.

The gravimetric factor is an expression that is used to convert grams of a compound into grams of a single element.

It is expressed as a ratio of the formula weight (FW) of the substance that is being determined to that of a second substance that is weighed.

For example formula of silver bromide is AgBr and the formula mass of silver bromide is 188 g/mol

Formula mass of bromide ion = 80 g/mol

Gravimetric factor = 80/1188

Gravimetric factor = 0.425

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Answer:

H₃O⁺.

Explanation:

Hello,

In this case, ionization of ethanol yields hydrogen cations and ethoxide anions as follows:

\(CH_3COOH+H_2O\rightleftharpoons H_3O^++CH_3COO^-\)

Which is at equilibrium as ethanol is a weak acid. Thus, since the conjugate acid is formed by the outgoing H⁺ and the water, we say that the conjugate acid is then the hydroxonium ion, H₃O⁺ whereas the conjugate base is the remaining anion CH₃COO⁻.

Best regards.

Answer:

D. Poor conductors of heat

Explanation:

The medicine that has to be given by the nurse to prevent cerebral palsy in the new-born is magnesium sulphate.

The term "cerebral palsy" refers to a collection of conditions that impair mobility and posture development and are thought to be caused by non-progressive abnormalities. Insults that caused cerebral palsy are thought to have happened during foetal development or early childhood. A significant risk factor for cerebral palsy is preterm delivery, and that risk rises sharply as gestational age decreases. Right now, 25% of all new occurrences of cerebral palsy are caused by babies delivered before 34 weeks of pregnancy. Cerebral palsy risk is higher when there are several pregnancies. MgSO4 was infused continuously at a rate of 2 g/h for up to 12 hours after a 6 g loading dose. Given before delivery, magnesium sulphate is known to regulate the vasculature and minimize hypoxia effects by neutralising cytokine or excitatory amino acid damage, which may lower the risk.

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Answer:

The answer is "\(20 \ mL\)"

Explanation:

Given:

Molarity= number of moles

because it is 1 Liter

\(\to \frac{0.03\ moles}{1.5 moles}=0.02\ L= 20 \ mL \ of\ Tris\\\\\)

therefore,

it takes 20 mL of Tris.

\(\to \frac{0.150 \ moles}{5\ moles} =0.03\ L\\\\\)

                     \(= 30 \ mL \ of\ Nacl\)

So, take \(20 \ mL\ of\ NaCl.\)

Answer:

I think its epicenter

Explanation:

The epicenter is the point on the earth's surface vertically above the hypocenter, point in the crust where a seismic rupture begins.

Compute the initial moles of HCl present in the buffer before any HCl was added. This may be accomplished by utilising the buffer's starting pH and the known dissociation constant (Ka) for the weak acid in the buffer. For example, if the buffer is formed of acetic acid (CH3COOH) and its starting pH is 4.5, we may determine the initial concentration of CH3COOH in the buffer using the Ka value for acetic acid (1.8 x 10-5).

Subtract the total moles of H+ at the location from the beginning moles of H+ in the buffer.

In a chemical process, an acid either provides protons (hydrogen ions) or receives electrons. Acids have a pH value less than 7 and are distinguished by their sour taste and capacity to dissolve certain metals, such as zinc and iron

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Answer: (a) To calculate the activation energy (Ea) for a first-order reaction, we can use the Arrhenius equation:

k = Ae^(-Ea/RT)

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant (8.314 J/mol K), T is the temperature in Kelvin, and e is the base of the natural logarithm.

We can rearrange the equation to solve for Ea:

Ea = -RT ln(k/A)

We'll use the rate constants at 25°C and 50°C:

k1 = 2.76 × 10-5 s-1 at 25°C

k2 = 6.65 × 10-4 s-1 at 50°C

T1 = 25 + 273.15 = 298.15 K

T2 = 50 + 273.15 = 323.15 K

Substituting these values into the equation for Ea:

Ea = -R * (T1) * ln(k1/A) = -R * (T2) * ln(k2/A)

Dividing both sides by -R:

T1 * ln(k1/A) = T2 * ln(k2/A)

Dividing both sides by T1 and T2:

ln(k1/A) / T1 = ln(k2/A) / T2

Taking the natural logarithm of both sides:

ln(k2/k1) = (T2/T1) * (ln(k1/A) / T1)

Substituting the values for k1, k2, T1, and T2:

ln(6.65 × 10-4 / 2.76 × 10-5) = (323.15 / 298.15) * ln(2.76 × 10-5 / A)

Solving for ln(k1/A):

ln(k1/A) = ln(6.65 × 10-4 / 2.76 × 10-5) / (323.15 / 298.15)

Using a logarithm calculator, we find that ln(k1/A) = 13.80.

Finally, substituting back into the equation for Ea:

Ea = -R * (T1) * ln(k1/A) = -R * 298.15 * 13.80 = 9,920 J/mol

So, the activation energy for this reaction is approximately 9.92 kJ/mol.

(b) To find the rate constant at 75°C, we can use the Arrhenius equation:

k = Ae^(-Ea/RT)

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy (9,920 J/mol), R is the gas constant (8.314 J/mol K), T is the temperature in Kelvin (75 + 273.15 = 348.15 K), and e is the base of the natural logarithm.

Substituting these values into the equation:

k = Ae^(-Ea/RT) = Ae^(-99

Weight is best defined as the force of gravity on an object (option C).

Weight is the force on an object due to the gravitational attraction between it and the Earth (or whatever astronomical object it is primarily influenced by).

Weight is different from mass being that weight is a dependent on the gravitational force of the object's habitation, however, mass is not.

For example, the mass of an object on Earth can be 10kg, however, the weight of the object is 100N because the gravitational force of the Earth is 10m/s².

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Answer:

C6H6 < C7H15OH < C6H13OH < C2H5OH

Explanation:

Hello,

In this case, since the organic molecules solubility is defined in terms of the presence of hydrogen bonds as intermolecular forces, which are formed between oxygen and hydrogen and the length of the organic chain, we can notice that hydroxyl-containing longer chains tend to be less water soluble whereas shorter chains more soluble as the polar part of the chain will lead the solubility. In addition to it, chains with lack of oxygen tend to be highly water insoluble. Therefore, we can notice that C6H6 is the least water soluble, next C7H15OH, then C6H13OH and the most soluble is C2H5OH.

Best regards.

Answer:

I have some answer keys to it. Comment your snapcht and I will send it to you! :)

Explanation: