Which will have both the highest ionization energy and the largest atomic
radius? Potassium, Bromine, Krypton

Answer:

1) easy compressed

2) fills its container

3) far more space

Explanation:

Explanation:

system at equilibrium, will the reaction shift towards reactants ~

--?'

2. (2 Pts) Consider the reaction N2(g) + 3H2(g) =; 2NH3(g). The production of ammonia is an

exothermic reaction. Will heating the equilibrium system increase o~e amount of

ammonia produced? . .co:(

3. (2 Pts) Consider the reaction N2(g) + 3H2(g) =; 2NH3(g). Ifwe use a catalyst, which way will

the reaction shift? ':'\

.1.+- w~t s~,H (o')l r'eo.c. e~ ei~i"liht-,·u.fn\ P~~,

4. (3 Pts) ff 1ven th e o £ 11 owmg d t a a £ or th ere action: A(g) + 2B(s) =; AB2(g)

Temperature (K) Kc

300 1.5x104

600 55 k ' pr, cl l<..J~

e- ~ r fee, ct o. ~ 1<

900 3.4 X 10-3

Is the reaction endothermic or exothermic (explain your answer)?

t d- IS o.,;r-. \4\a..i~1f't~ °the te.Y'il(lf1,:J'u.r-a a•~S. j lrvdu..c,,.) +~H~to{' '\

exothe-rnh't.-- ,.. ..,. (/.., ,~.

5. (4 Pts) Consider the reaction, N2(g) + 3H2(g) =; 2NH3(g). Kc= 4.2 at 600 K.

What is the value of Kc for 4 NH3(g) =; 2N2(g) + 6H2(g)

N ... ~l + 3 H~(ri ~ ~Nli3~) kl,= ~:s;H,J3 # 4. J..

~ ;)N~~) ~ ~ H ~) ~\-_ == [A!;J:t D~~Jb

J. [,v 1+3] ~

I

4,:i.~ = 0,05

5.00 mol of ammonia are introduced into a 5.00 L reactor vessel and when the equilibrium is reached, 1.00 mole remains. The concentration equilibrium constant is 17.3.

Initially, there are 5.00 mol of ammonia in a 5.00 L reactor vessel. The initial concentration of ammonia is:

\([NH_3]_i = \frac{5.00mol}{5.00L} = 1.00 M\)

At equilibrium, there is 1.00 mole of ammonia in the 5.00 L vessel. The concentration of ammonia at equilibrium is:

\([NH_3]eq = \frac{1.00mol}{5.00L} = 0.200 M\)

We can calculate the concentrations of all the species at equilibrium using an ICE chart.

       2 NH₃(g) ⇄ 3 H₂(g) + N₂(g)

I          1.00              0          0

C         -2x              +3x        +x

E       1.00-2x          3x          x

Since the concentration of ammonia at equilibrium is 0.200 M,

\(1.00-2x = 0.200\\\\x = 0.400 M\)

The concentrations of all the species at equilibrium are:

\([NH_3] = 0.200 M\\[H_2] = 3x = 1.20 M\\[N_2] = x = 0.400 M\)

The concentration equilibrium constant (Kc) is:

\(Kc = \frac{[H_2]^{2} [N_2]}{[NH_3]^{2} } = \frac{(1.20^{3})(0.400) }{0.200^{2} } = 17.3\)

5.00 mol of ammonia are introduced into a 5.00 L reactor vessel and when the equilibrium is reached, 1.00 mole remains. The concentration equilibrium constant is 17.3.

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If he rubs his foot on the carpet or touches the metal doorknob it would increase his chances of being zapped.

Rubbing his feet would be friction.

Touching the doorknob would be potential energy.

Side note: I love the format for this question, was not expecting to see John Travolatge on here today >O< !!!  

Answer:b) 2.53

Explanation:

4.95 is the number of molecules in 500m cube of Oxygen at room temperature and pressure

we have got data

pressure=1atm

temperature=298 k

volume=500 m^3

gas constant, R=8.31

now, by applying ideal gas equation

PV=nRT

1×500=n×8.31×298

n=2476.38/500

n=4.95

It is the lowest part of the material and has chemical elemental properties. Atoms do not independently exist; rather, they combine to form ions and molecules, which then combine to form the material that we can see, feel, and touch.

Molecules are made up of one or more atoms connected by covalent (chemical) connections. Atoms can be visualized as circles with a nucleus in the center (made up of protons and neutrons) and one or more concentric circles around it that indicate the "shells" or "levels" in which the electrons surrounding the atom's nucleus are located, as well as markings that identify the electron. each level

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The mass of water that can be obtained is 2.2 g of water.

We know that in the case that we have here, we are going to depend on the stoichiometry of the reaction and this is very important in the determination of the amount of the water that can be formed.

Now we can see that the reaction equation can be written from the fact that; \(2H_{2} (g) + O_{2} (g) ---- > 2H_{2} O(g)\). Then we can see that in this kind of chemical reaction we have to apply the stoichiometry.

Number of moles of the hydrogen = 14.8g/2 g/mol = 7.4 moles

Number of moles of oxygen = 34.8 g/32 g/mol = 1.1 moles

Given that 2 moles of hydrogen reacts with 1 mole of oxygen

7.4 moles of hydrogen reacts with 7.4 * 1/2

= 3.7 moles

Hence oxygen is the limiting reactant.

1 mole of oxygen produces 2 moles of water

1.1 moles of oxygen would produce 1.1 * 2/1

= 2.2 moles of water

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The intermolecular force between bromine and benzene is primarily a van der Waals force known as London dispersion forces.

London dispersion forces occur due to temporary fluctuations in electron distribution, creating temporary dipoles in molecules. In the case of bromine and benzene, both molecules are nonpolar, meaning they have no permanent dipole. However, they still experience London dispersion forces.

Benzene is a cyclic aromatic hydrocarbon with a hexagonal ring structure. It consists of delocalized π electrons above and below the plane of the molecule. Bromine is a halogen element with seven valence electrons, which forms diatomic molecules. In the solid or liquid state, bromine molecules exist as Br2.

The London dispersion forces between bromine and benzene arise from the temporary shifts in electron density within their electron clouds. The π electrons in benzene induce temporary dipoles in the bromine molecules, resulting in attractive forces between them. These temporary dipoles continuously form and break due to electron movements, resulting in an overall attractive force between the bromine and benzene molecules.

While London dispersion forces are generally weaker than other intermolecular forces like dipole-dipole interactions or hydrogen bonding, they still contribute to the stability of the system and affect properties such as boiling points and melting points.

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Answer:2.62 L

Explanation:

A sample of gas occupies a volume of 2.62 liters at 25° C and 1.00 atm. and the volume at 50° C and 2 atm then volume is 2.62 liters.

The equation of state for a fictitious perfect gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has significant drawbacks, it is a decent approximation of the behavior of many gases under various situations.

An ideal gas is one in which there are no intermolecular attraction forces and all collisions between atoms or molecules are entirely elastic. It may be seen as a group of perfectly hard spheres that collide but do not else interact with one another.

By using ideal gas equation,

P₁ V ₁ ÷ T = P₂V₂ ÷ T

1 × 2.62 ÷ 25 = 2 × V₂ ÷ 50

V₂ = 1 × 2.62 × 50 ÷ 25 × 2

V₂ = 2.62 liters.

Thus, a sample of gas occupies a volume of 2.62 liters at 25° C and 1.00 atm. and the volume at 50° C and 2 atm then volume is 2.62 liters.

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Answer:

Sn is the oxidation agent and h2 is the reducing agent

Explanation:

Because oxidation agent means reduction which means the lose of oxygen and Sn lose oxygen.

While reduction agent means oxidation which also means the gain of oxygen and h2 gain oxygen.

I hope you understand my explanation if you need any help in chemistry I'm always here

All health professionals, including pharmacists, must be able to relate form to function..a grounding in anatmony is an essential foundation on which to underpin other knowledge relevant to clinical practice.

The minimum concentration of AgPO4 that will cause precipitation of Ag3PO4 is \(5.64*10^-^5M\)

Data;

\(ksp = [Ag]^3[PO_4]\)

The ksp value of \(AgPO_4 = 1.8*10^-^1^8\\\)

Let's substitute the values and solve for the cation

\(1.8*10^-^1^8= [Ag]^3[1.0*10^-^5]\\\\\)

This becomes

\([Ag]^3=\frac{1.8*10^-^1^8}{1.0*10^-^5}\\ \\\)

\([Ag]=\sqrt[3]{1.8*10^-^1^3}\\\\\)

\([Ag] = 5.64 * 10 ^-5M\)

From the above calculation, we can say that the minimum concentration of AgPO4 that will cause precipitation of Ag3PO4 is 5.64*10^-5M

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Answer:

29.5 days

Explanation:

orginally 27.3 days but 29.5 days is also correct

The theoretical yield of Cu(NO3)2 is 20.259 grams.

To determine the theoretical yield of Cu(NO3)2, we need to calculate the amount of copper reacting with the silver nitrate and use stoichiometry to convert that amount to the molar mass of Cu(NO3)2.

First, let's find the molar mass of silver nitrate (AgNO3):

AgNO3 = 107.87 g/mol (Ag) + 14.01 g/mol (N) + 3 * 16.00 g/mol (O) = 169.87 g/mol

Next, we need to calculate the amount of copper that reacts with the given mass of silver nitrate. The molar mass of copper (Cu) is 63.55 g/mol.

Using the molar ratio from the balanced chemical equation, we can relate the moles of copper to the moles of silver nitrate. The balanced equation is:

Cu + 2AgNO3 -> Cu(NO3)2 + 2Ag According to the equation, 1 mole of copper reacts with 2 moles of silver nitrate.

Now we can calculate the moles of copper reacting with 36.7 g of silver nitrate:

moles of AgNO3 = (mass of AgNO3) / (molar mass of AgNO3)

moles of AgNO3 = 36.7 g / 169.87 g/mol = 0.2160 mol AgNO3

Using the stoichiometric ratio, we find the moles of Cu:

moles of Cu = (moles of AgNO3) / (2 moles of AgNO3 per 1 mole of Cu)

moles of Cu = 0.2160 mol AgNO3 / (2 mol AgNO3/1 mol Cu) = 0.1080 mol Cu

Finally, we can calculate the theoretical yield of Cu(NO3)2 using the molar mass of Cu(NO3)2:

theoretical yield of Cu(NO3)2 = (moles of Cu) * (molar mass of Cu(NO3)2)

theoretical yield of Cu(NO3)2 = 0.1080 mol * (63.55 g/mol + 2 * (14.01 g/mol + 3 * 16.00 g/mol))

theoretical yield of Cu(NO3)2 = 0.1080 mol * 187.56 g/mol

theoretical yield of Cu(NO3)2 = 20.259 g

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Answer: for me everything ig

Explanation:

Dissolve 60g of potassium bromide in 340g of water to produce 15% (mass/mass) aqueous solution of potassium bromide.

Here we have to prepare a total of 400 g of solution. Aqueous solution means the solvent we use here is water.

So to prepare 400 g of 15% aqueous solution of potassium bromide, we need to find out how many grams of potassium bromide need to be dissolved in water and how many grams of water must be used.

Here the weight percent is given, that is 15%

       15/100 = weight of potassium bromide/ 400 g

       0 .15      = weight of potassium bromide / 400

      weight of potassium bromide needed = 0.15 × 400

                                                                       =  60 g

So, we calculated the required amount of potassium bromide as 60 grams. The total weight of the solution to be made is 400 grams.

So amount of water required = 400 - 60

                                                =  340 g

So we need to mix 60 grams of potassium bromide in 340 grams of water to get a 15% (mass/mass) aqueous solution.

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If 60 grams of the substance are added to 100 g of water, the solution can be categorized as supersaturated.

The graph shows the number of grams that can be dissolved in 100 grams of water at different temperatures. In general, solubility increases with temperature.

According to the graph, at a temperature of 30°C, it is possible to dissolve a total of 48 to 49 grams of \(KNO_{3}\). This information implies that if we add 60 grams at this temperature not all the substance would be dissolved, and therefore the solution would be supersaturated.

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Answer:

when potassium reacts with chlorine, the former loses its valence electron and the latter takes it. The two resulting ions, i.e. the potassium cation and the chloride anion, are then bonded together by the electrostatic force of attraction → an ionic bond is formed.

Explanation:

One ion of the element Potassium combine with one ion of the element chlorine to form the compound potassium chloride in fixed proportion

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

There are two types of compound,  covalent compound and ionic compound. Covalent compound are formed by sharing of electron and ionic compound formed by complete transfer of electron.

According to our question sodium is a metal so it can donate its electron to chlorine and hence form ionic bond. Chlorine is more electronegative than sodium so it can take electron from sodium easily.

The balanced equation is

Na⁺+Cl⁻\(\rightarrow\)   NaCl

So from this we can see that One atoms of element Potassium combine with one atom of the element chlorine to form the ionic Compound Potassium chloride.

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The scientific method is the method used for scientific discovery.

The scientific method is the process or procedure which scientists follow in their discovery and explanation of natural phenomena.

The scientific method is as follows:

Using the scientific method to determine if water is needed by plants to grow

Question: Is water needed for growth in plants?

Hypothesis: Plants need water

Independent variable: sunlight

Dependent variable: rate of evolution oxygen

Constant variable: sunlight and soil

Materials: Cupboard, soil, potted plant, water,

Procedure: One potted  potted plant is watered, while the other is not watered. The length of the plant is measured after 10 days

Observation: The watered plant survived and grew while that which was not watered did not grow but died.

Conclusion: water is needed for growth in plants.

In conclusion, the scientific method can be used to determine if plants need water for growth.

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Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 16.93 g

volume = final volume of water - initial volume of water

volume = 19.7 - 11.2 = 8.5 mL

We have

\(density = \frac{16.93}{8.5} \\ = 1.9917647058...\)

We have the final answer as

Hope this helps you

In Newton's second law, unbalanced or net forces cause an object to accelerate.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed as F = m × a

Where:

F is the net force acting on the object,

m is the mass of the object,

a is the acceleration produced in the object.

This law describes the relationship between force, mass, and acceleration. The greater the force applied to an object, the greater its acceleration. The greater its mass, the smaller its acceleration for the same force.

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Answer:

More bro

Explanation:

Pollution is only increasing

Answer: Yes and no, no because people are constantly polluting the earth with plastic which is a big issue.  Yes, because things are being invented to help with plastic pollution, and there is a great number of people who recycle, so however you look at it there's really a 50/50 chance.

Explanation:

Answer:

yep C is correct!!

Explanation:

Answer:

Reactant

Explanation:

hope this helps you

The solid that require the greatest energy input to melt by mass is the option;

Covalent network

Reason for the above answer is as follows;

The elementary particles of a solid are held together by bonds that require

an input of energy to unlock, and once broken, the particles are then able

to change location within their containing vessels with less restrictions

Types of bonds

a) Soluble in water b) Low melting point, b) Conduct electricity

a) High melting point temperature b) Non conductive of electricity c) Not soluble in water

a) High melting point temperature b) The liquid state and solution

conducts electricity c) Soluble in water

a) Low melting point b) Normally in the gaseous or liquid state b) Not water soluble

Therefore, the covalent network, and the solids ionic compounds require the most energy to melt, however, the strength of the ionic bond in an ionic compound is a factor the charges present and the sizes of the atom, while

the covalent network solid, are combined to form essentially as a single

molecule and therefore require the greatest heat energy input break the bonds of the molecule down in order to melt

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Answer:

An ocean current is a continuous, directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbeling, and temperature and salinity differences. Features like depth contours, shoreline configurations, and interactions with other currents also influence an ocean current’s direction and strength. Ocean currents flow for great distances, and together, create the global conveyor belt that plays a dominant role in determining the climate of many of the Earth’s regions (illustrated in the NASA video below). For example, the Gulf Stream makes northwest Europe much more temperate than any other region at the same latitude. Another example is Lima, Peru where the climate is cooler than the tropical latitudes in which the area is located, due to the effect of the Humboldt Current.  Ocean modelling uses a mathematical model of the general circulation of an ocean, based on the Navier–Stokes equations on a rotating sphere with thermodynamic terms for various energy sources (radiation, latent heat). These equations are the basis for complex computer programs commonly used for simulating the atmosphere or ocean of the Earth.

Explanation:

Answer:

The correct answer is 0.373 M.

Explanation:

The reaction will be,

H3PO4 (aq) + 3KOH (aq) ⇔ 3H2O (l) + K3PO4 (aq)

Based on the given information, the molarity of the solution KOH is 0.100 M, the volume of the solution given is 112 ml or 0.112 L.

The molarity of the solution with respect to KOH is,

M = Moles/Volume of Solution (liters)

Moles of solute = Molarity * Volume of solution

Moles = 0.100 M * 0.112 L

= 0.0112 moles

From the reaction it is clear that 3 moles of KOH needed 1 mole of H3PO4, thus, 0.0112 moles of KOH will require,

1/3 * 0.0112 = 0.00373 moles of H3PO4

The volume of the H3PO4 solution is 10 ml or 0.01 L.

The molarity of the solution will be,

M = Moles/ Volume of Solution (liters)

M = 0.00373/0.01 = 0.373 M

Thus, the concentration of the solution is 0.373 M.

The concentration of the H3PO4 would be 0.37 M

Going by the balanced equation of the reaction:

\(3KOH + H_3PO_4 ---> 3H_2O + K_3PO_4\)

The mole ratio of KOH to H3PO4 is 3:1.

Using the equation: CaVa/CbVb = 1/3

What we are looking for is Ca:

Ca = CbVb/3Va

              = 0.1 x 112/3 x 10

                 = 0.37 M

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Answer:

1: false

2: B

Explanation:

I do not know the 3rd one

Answer:

Arrhenius Acid = HBr

Arrhenius Base = LiOH

Explanation:

Arrhenius acids are substances which increase the H⁺ concentration of an solution it has been dissolved in.

Arrhenius bases are substances which increase the OH⁻ concentration of a solution it has been dissolved in.

When dissolved in a solution, HBr dissociates into H⁺ and Br⁻ ions. As such, HBr increases the H⁺ concentration of the solution and is a Arrhenius acid.

When dissolved in a solution, LiOH dissociates into Li⁺ and OH⁻ ions. As such, LiOH increases the OH⁻ concentration of the solution and is an Arrhenius base.

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.