2. __Mn3N4 + __NaCl --> __MnCl4 + __Na3NYou have 12 moles of NaCl. How many moles of MnCl4 will be produced?

50.9 grammes of Nickel (III) oxide are converted into 36.2 grammes of Nickel.

By extension of this definition, the mass of any material represented in atomic mass units is numerically equivalent to the molar mass of that substance in grammes per mole. For instance, an oxygen atom has an atomic mass of 16.00 amu, which translates to a molar mass of 16.00 g/mol.

2Nickel (III) oxide(s) ⟶ 4Nickel(s) + 3Ocygen(g)

The balanced equation shows that 2 moles of Nickel (III) oxide reacts to form 4 moles of Nickel.

Next, we need to calculate the number of moles of Nickel (III) oxide:

molar mass of Nickel (III) oxide = 165.38 g/mol

moles of Nickel (III) oxide = mass/molar mass = 50.9 g/165.38 g/mol = 0.308 moles

Using the mole ratio from the balanced equation, we can calculate the moles of Nickel formed:

moles of Nickel = 0.308 moles Nickel (III) oxide × (4 moles Nickel /2 moles Nickel (III) oxide) = 0.616 moles Nickel

Finally, we can calculate the mass of Nickel formed:

molar mass of Nickel = 58.69 g/mol

mass of Nickel = moles of Nickel × molar mass of Nickel = 0.616 moles × 58.69 g/mol = 36.2 g

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Temperature is supplied to us as 225 K. The reduction potential potentials will be used to get it equilibrium constant for the this reaction.

Definition of EQUILIBRIUM as a noun in the Britannica Dictionary. [noncount] 1. a condition when conflicting forces or acts are matched so that neither is stronger or more significant than the other.

The forces that affect the body must balance out with an equivalent and opposing force for there to be a condition of equilibrium. The physiological state of equilibrium, wherein forces internal and external are all in balance, in an active moving animal. The system is hence stable.

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We must melt about 3.8 kg of brass A, 4.1 kg of brass B, and 6.5 kg of brass C to obtain about 14.5 kg of the desired alloy

we can set up a system of equations based on the conservation of mass and the desired composition:

0.533x + 0.247y + 0.220z = 14.5 (desired composition of copper, zinc, and nickel)

The given information includes:

Brass A: 41% copper, 23% zinc, 36% nickel

Brass B: 54% copper, 23% zinc, 23% nickel

Brass C: 56% copper, 26% zinc, 18% nickel

Using this information, we can write the following equations:

0.41x + 0.54y + 0.56z = 0.533(x + y + z) (copper)

0.23x + 0.23y + 0.26z = 0.247(x + y + z) (zinc)

0.36x + 0.23y + 0.18z = 0.220(x + y + z) (nickel)

Simplifying each equation, we get:

0.067x - 0.027y - 0.023z = 0 (copper)

-0.017x + 0.017y + 0.003z = 0 (zinc)

-0.020x - 0.027y + 0.038z = 0 (nickel)

We can solve the equations using substitution method or elimination method and our values will be:

x = 3.8462

y = 4.1077

z = 6.5461

In conclusion, we need to melt about 3.8 kg of brass A, 4.1 kg of brass B, and 6.5 kg of brass C to obtain about 14.5 kg of the desired alloy.

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Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the  pH of a 0.01 M acetic acid.

Any hydrogen that comprises a material capable of giving a proton (a hydrogen ion) to another chemical is defined as acid. A base is indeed a molecule or ion that can receive a hydronium ion from just an acid.

1)Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. The pH value of stronger acid is lower.

2)CH\(_3\)COOH + H\(_2\)O  ⇄ CH\(_3\)COO⁻+  H\(_3\)O⁺

 0.01             0               0

 -x              +x                +x

 0.01-x           +x        +x

Ka=[ CH\(_3\)COO⁻][H\(_3\)O⁺]/[CH\(_3\)COOH]

1.8×10⁻⁵ = [x][x ]/[  0.01-x ]

x=1.34×10⁻³

pH = -log[H⁺]

     =  -log[1.34×10⁻³]

     =2.88

Therefore, because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the   pH of a 0.01 M acetic acid.

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32 electrons can be held in the energy level n = 4 as number of electrons is given as 2n²=2×(4)²=32.

Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.

Energy of the stationary state is given as E= -R

1/n² where R

is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.

They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.

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Answer:

radiometric dating

Explanation:

The age of rocks is determined by radiometric dating, which looks at the proportion of two different isotopes in a sample. Radioactive isotopes break down in a predictable amount of time, enabling geologists to determine the age of a sample using equipment like this thermal ionization mass spectrometer.

Hope this helps!

To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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Answer:

T = 4.062V

Explanation:

from PV = nRT => T = PV/RT

P = 1 atm

V = Final Volume

n = 3 moles

R = 0.08206 L·atm/mol·K

T = ?

T = 1 atm · V(Liters)/(3 moles)(0.08206L·atm/mol·K) = 4.062·V(final) Kelvin

The temperature of the balloon is 406 K

We'll begin by listing out what was given from the question. This is shown below:

Volume (V) = 100 L

Mole of oxygen (n) = 3 moles

Pressure (P) = 1 atm

We can obtain the temperature of the balloon by using the ideal gas equation as shown below:

P is the pressure.

V is the volume.

n is the number of mole

R is the gas constant (0.0821 atm.L/Kmol)

T is the temperature.

Applying the ideal gas equation, we have:

PV = nRT

1 × 100 = 3 × 0.0821 × T

100 = 0.2463 × T

Divide both side by 0.2463

T = 100 / 0.2463

Therefore, the temperature of the balloon is 406 K

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Answer:

A. 60 kPa

Explanation:

P2 = p1 times t2 / t1

Balanced equation :

3H₂+N₂⇒2NH₃

Equalization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:

1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.

2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product

3. Select the coefficient of the substance with the most complex chemical formula equal to 1

Unbalanced⇒the number of atoms from both sides (reactants and products) is not the same

H₂+N₂⇒NH₃

H=2(left), H=3(right)

N=2(left), N=1(right)

Balanced ⇒ the number of atoms from both sides (reactants and products) is equal

3H₂+N₂⇒2NH₃

H=3x2=6(left), H=2x3=6(right)

N=2(left), N=2x1=2(right)

The peroxide addition would yield a product that is different from the antiperoxide addition

Markovnikov's rule states that when a protic acid HX is added to an alkene, the acid hydrogen (H) forms a bond with the carbon atom that has the greatest number of hydrogen atoms, while the halide (X) group forms a bond with the carbon atom that has the fewest hydrogen atoms.

This can be summed up with the phrases "the rich get richer" and "the poor get poorer" in terms of hydrogen. This fundamental principle of alkene chemistry aids in predicting the results of addition reactions.

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Answer:

The number of electron in neutral atom of nitrogen are 7.

Atomic mass = 14 amu

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

The number of electron in neutral atom of nitrogen are 7.

Thus its atomic number is also 7.

Atomic mass = number of proton + number of neutron

Atomic mass = 7 + 7

Atomic mass = 14 amu

A piece of metal with a mass of 14.9 g is heated from 72.35°C. When the metal is placed in 75.0 g of water at 20.0°C, the temperature of the water rises by 2.85°C. 66.35 joule/Kg °C is the specific heat capacity of the metal.

In thermodynamics, the specific heat capacity (symbol c) of a substance is the heat capacity of a sample of the substance divided by the mass of the sample, also sometimes referred to as massic heat capacity.

Informally, it is the amount of heat that must be added to one unit of mass of the substance in order to cause an increase of one unit in temperature.

Cp of metal× Mass of metal*(initial temperature-final temperature)=Cp of water× Mass of water×(final temperature - initial temperature)

Cp of metal×14.9×(98–28.5)=Cp of water×75×(28.5–20)

Cp of metal×14.9×(98–28.5)=Cp of water×75×(28.5–20)

Cp of metal =66.35 joule/Kg °C.

Therefore, 66.35 joule/Kg °C is the specific heat capacity of the metal.

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Answer:

H2SO4 Chemical Name

It contains two atoms of hydrogen, one atom of sulphur, and four atoms of oxygen. It has an atomicity of seven.

Calcium Nitrate is made up of three different elements and contains a total of nine atoms. This compound's formula is Ca(NO3)2. There is one calcium atom, two nitrogen atoms, and there are six oxygen atoms in calcium nitrate.

Explanation:

Yw ❤

Shorter people have a lower center of gravity. Taller people have a higher center of gravity. A lot of skateboarding tricks depend on the center of gravity.

Kinetic energy is a form of energy it possess when any object or person is in motion . It can be defined as the work needed to be done to produce a motion in a object from rest position.

If we want to acceleration in an object then we must apply a force on a object to give  motion so we can say that we required to do work for acceleration and then we can say that required is equal to kinetic energy.

Mathematically

Kinetic energy =1/2mv^2

Where

m = mass of object.

v = velocity of object

Kinetic energy is vector quantity it means that it have both i.e magnitude and vector.

S.I unit of Kinetic energy is Joule.

Therefore, Shorter people have a lower center of gravity. Taller people have a higher center of gravity. A lot of skateboarding tricks depend on the center of gravity.

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When the moon is at point 2, it will be covering Florida, which will cause some areas of the earth to be dark while others will be light.

Our home planet is Earth. According to scientists, the formation of Earth and its moon coincided with that of the entire solar system. The estimated age of that event is approximately 4.5 billion years ago. The solar system's fifth-largest planet is Earth. Its diameter is roughly 8,000 kilometers.

We have life on our home planet, that also shields us from outer space. Our own planet, Earth, is a world unto itself. Earth, as third planet from the sun, is the only place in the entire cosmos where the existence of life has been established.

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Florida will be under the shadow of the moon at point 2, making some parts of the earth dark and others light.

A year is mainly divided into four seasons- winter, spring , summer and autumn. These seasons are experienced due to change in the position of earth around the sun

Earth is our home planet. According to scientists, the development of the Earth and its moon occurred simultaneously with that of the solar system as a whole. That incident occurred roughly 4.5 billion years ago, according to estimates. The fifth-largest planet in the solar system is Earth. It has a circumference of about 8,000 kilometers.

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Taking into account definition of percent yield, the correct answer is option c): the percent yield for the reaction is 0.947.

In first place, the balanced reaction is:

CH₄ + 2 O₂ → CO₂ + 2 H₂O

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 16.05 grams of CH₄ form 44.01 grams of CO₂, 136 grams of CH₄ form how much mass of CO₂?

mass of CO₂= (136 grams of CH₄× 44.01 grams of CO₂)÷16.05 grams of CH₄

mass of CO₂= 372.92 grams

Then, 372.92 grams of CO₂ can be produced from 136 grams of CH₄.

The percent yield is the ratio of the actual return to the theoretical return expressed as a percentage and this is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:

percent yield= (actual yield÷ theoretical yield)× 100%

where the theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product.

In this case, you know:

Replacing in the definition of percent yield:

percent yield= (353 grams÷ 372.92 grams)× 100%

Solving:

percent yield= 94.7%= 0.947

Finally, the percent yield for the reaction is 0.947.

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The equation is already balanced.

The  ending substance that is asked for in the problem is C= 5.707 g of H2.

A balanced equation  can be regarded as the  equation  used for  chemical reaction where the  number of atoms for each element that is present in that reaction and the total charge are equal for  both the reactants and the products.

In making the calculation:

(1 mol of C) will give us  (1 mol of H2)

(12.01 g of C) will give us   (2.016 grams of H2)

Then  we can find the Ratio as ( 2.016 g of H2 / 12.01 g of C)

If we simplify, then C= 5.707 g of H2

Therefore , the ending substance that is asked for in the problem is C= 5.707 g of H2.

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CHECK THE COMPLETE QUESTION BELOW:

How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is:

C + H2O CO + H2

1) Is this equation balanced?

2) What is the starting substance?

3) What is the ending substance that is asked for in the problem?

Additional info: The atomic mass of C is 12.01 g/mole. The atomic mass of H2 is 2.016 g/mole.

A sample of \(F_2\) gas that occupies 25.0 mL at a pressure of 1.2 atm will occupy 2.73 mL at a pressure of 5.5 atm, assuming the temperature remains constant.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas before and after a change in one or more of these properties. The combined gas law is given by:

\((P_1 * V_1) / T_1 = (P_2 * V_2) / T_2\)

where\(P_1\) and \(V_1\) are the initial pressure and volume, \(T_1\) is the initial temperature, \(P_2\) and \(V_2\) are the final pressure and volume, and \(T_2\) is the final temperature.

In this problem, we are given the initial volume of \(F_2\) gas as 25.0 mL at a pressure of 1.2 atm. We want to find the final volume of the gas at a pressure of 5.5 atm. The temperature is not given, but we can assume that it remains constant.

We can rearrange the combined gas law to solve for\(V_2\):

\(V_2 = (P_1 * V_1 * T_2) / (P_2 *T_1)\)

Plugging in the values, we get:

\(V_2\) = (1.2 atm x 25.0 mL x \(T_2\)) / (5.5 atm x \(T_1\))

We can simplify the expression by canceling out the units of atm and mL:

\(V_2\) = (1.2 x 25.0 x \(T_2\)) / (5.5 x \(T_1\)) mL

\(V_2\)= (30 x \(T_2\)) / (11 x\(T_1\)) mL

We can see that the final volume of the gas is proportional to the ratio of the temperatures \(T_2\)/\(T_1\). Since we are assuming that the temperature remains constant, this ratio is equal to 1, and we can simply calculate the final volume as:

\(v_2\) = (30 mL) / (11) = 2.73 mL

Therefore, a sample of\(F_2\) gas that occupies 25.0 mL at a pressure of 1.2 atm will occupy 2.73 mL at a pressure of 5.5 atm, assuming the temperature remains constant.

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Answer:

Metals tend to form positive oxidation states. Here, Iron (I) has an oxidation state of +1 while Iron (II) has an oxidation state of +2. Similarly, Lead (I) has an oxidation state of +1 while Lead(II) has an oxidation state of +2. A change in oxidation state can rather cause significant changes in the compound.

the supraspinatus muscle is the most commonly injured muscle in this situation because it is responsible for initiating shoulder abduction, which is an important movement in the throwing motion.

The solution are as follows :-

1.Sarah's mother most likely strained her trapezius muscle. The trapezius muscle is a large triangular-shaped muscle that runs along the upper back and neck and is responsible for moving the shoulder blades and supporting the arms. When picking up a heavy object such as a baby, the trapezius muscle is activated, and if the muscle is strained or overused, it can cause sharp pain between the shoulder blades. The fact that Sarah's mother experiences this pain only when picking up her baby suggests that the weight of the baby is causing the strain.

2.The most likely type of injury to the baseball pitcher is a rotator cuff injury. The rotator cuff is a group of muscles and tendons that surround the shoulder joint and are responsible for stabilizing and moving the shoulder. Pitchers are at high risk for rotator cuff injuries due to the repetitive and forceful motion of throwing a baseball. The specific muscles that are most likely involved in a rotator cuff injury are the supraspinatus, infraspinatus, teres minor, and subscapularis muscles. However, the supraspinatus muscle is the most commonly injured muscle in this situation because it is responsible for initiating shoulder abduction, which is an important movement in the throwing motion.

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(NH4)3PO4 is insoluble in water. The correct option is D

According to their chemical formula and ionic charges, ionic compounds generally follow a set of solubility laws that define their solubility patterns in water. These guidelines aid in determining whether an ionic compound will dissolve in water or not as well as if it will precipitate when combined with other ionic compounds.

Therefore, (NH4)3PO4 is the compound that is expected to be insoluble in water based on the solubility rules.

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Answer:

Na2CO3 + 2HC2H3O2 --> CO2 + H2O + 2NaC2H3O2 (note my corrections to your original post)

2Na^+ + CO3^-2 + 2HC2H3O2 ==> CO2 + H2O + 2Na^+ + 2C2H3O2^-

Now cancel the ions common to each side to arrive at the net ionic equation. To be a little more accurate, place an (aq) after each ion or solution.

ur correct answer

Explanation:

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Answer:

decanting

stirring

solvent

Explanation:

Gravity filtration consists of a pump and a filter (to be placed outside the basin, above the water level). The pump is placed in the water. Connected by a hose to the filter, water is sucked up to the device.

In the gravity-type configuration, water is sucked into the filter, which causes an imbalance between the levels of the basin and the filter: this imbalance causes the movement of water - with the dirt - from the basin to the filter via the main drain and the skimmer.

The fill in the blanks with decanting, stirring, and solvent

It comprises of a pump & a filter.The pump should be placed in the water.  In the gravity-type configuration, water could be into the filter, which resulted an imbalance between the levels of the basin and the filter: this imbalance causes the movement of water.

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Answer:

2 Methyl pent 2 ene

The daughter isotope (a decay product)of O-15 = N-15(Nitrogen 15)

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

O-15 emits positron particles ₁e⁰, so the atomic number decreases by 1, the mass number is the same

Reaction

 \(\tt _8^{15}O\Rightarrow _7^{15}N+_1^0e\)

The mass number of the daughter isotope = 15, atomic number = 7

If we look at the periodic system, the element with atomic number 7 is Nitrogen (N)

Answer:

Anything that takes up space and has mass

Answer:

true

Explanation: