you have a flask to which you add 0.025 m nh3, 0.25m n2 what is the value of the equilibrium constant

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 B.

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.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter. In the given phase diagram, region C represents gas phase.

Therefore, the correct option is option B.

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Answer: A. Liquid

Explanation:

The substituent refers to the atom or group that replaces hydrogen atom or carbon.

Isomer is the structurally different compound comprising same molecular formula. Ionic is the chemical bond holding together ions. Neutral replacement requires replacement with same charge or mass depending on the context.

The correct option substituent holds property to influence the chemical characteristics and it can be an atom or functional group. The examples of substituents are carbonyl groups, halogens, hydroxyl, amino groups and others.

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Answer: f=ma

Explanation:

Nickel is not an essential trace mineral because it is required by the body in proper amount.

A silver-white metal called nickel is present in soil, water, and a variety of foods, such as almonds, dried beans, and chocolate. Only tiny amounts of nickel are necessary for the body.

For various bodily chemical processes, nickel is necessary. Its precise functions within the body aren't known. Vitamin supplements frequently contain the trace metal nickel.

When there is insufficient nickel in the blood, nickel insufficiency results. In order to avoid Nickel deficiency, people use Nickel. A good strategy to prevent nickel insufficiency is to take a supplement containing modest levels of nickel.

On the other hand, the essential trace minerals are chromium, copper, selenium, and molybdenum, which are needed by the body in small amounts for various physiological functions.

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Answer:

8

Explanation:

Its official chemical symbol is O, and its atomic number is 8, which means that an oxygen atom has eight protons in its nucleus

The empirical formula of the compound is CHCl₃, representing 1 carbon, 1 hydrogen, and 3 chlorine atoms.

To determine the empirical formula of a compound, we need to find the simplest whole number ratio of the atoms present.
First, let's convert the masses of each element to moles.
The molar mass of carbon (C) is 12.01 g/mol, hydrogen (H) is 1.01 g/mol, and chlorine (Cl) is 35.45 g/mol.
Moles of carbon = mass of carbon / molar mass of carbon

                           = 5.03 g / 12.01 g/mol

                           = 0.418 moles
Moles of hydrogen = mass of hydrogen / molar mass of hydrogen

                                = 0.42 g / 1.01 g/mol

                                = 0.416 moles
Moles of chlorine = mass of chlorine / molar mass of chlorine

                             = 44.5 g / 35.45 g/mol

                            = 1.256 moles
Next, we need to find the ratio of the moles.
Divide each mole value by the smallest mole value, which is 0.416 moles.
Carbon = 0.418 moles / 0.416 moles

            = 1.005

            ≈ 1
Hydrogen = 0.416 moles / 0.416 moles

                 = 1
Chlorine = 1.256 moles / 0.416 moles

              = 3.02

              ≈ 3
Therefore, the empirical formula of the compound is CHCl₃, representing 1 carbon, 1 hydrogen, and 3 chlorine atoms.

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Answer:

They are due to past earthquakes

Answer:

74.81 grams of calcium carbonate are produced from 79.3 g of sodium carbonate.

Explanation:

The balanced reaction is:

Na₂CO₃ + Ca(NO₃)₂ ⟶ CaCO₃ + 2 NaNO₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

Being the molar mass of the compounds:

then by stoichiometry the following quantities of mass participate in the reaction:

You can apply the following rule of three: if by stoichiometry 106 grams of Na₂CO₃ produce 100 grams of  CaCO₃, 79.3 grams of Na₂CO₃ produce how much mass of  CaCO₃?

\(mass of CaCO_{3} =\frac{79.3 grams of Na_{2} CO_{3} *100 grams of of CaCO_{3}}{106 grams of Na_{2} CO_{3}}\)

mass of CaCO₃= 74.81 grams

74.81 grams of calcium carbonate are produced from 79.3 g of sodium carbonate.

Answer:

Uranium-238 undergoes alpha decay to become thorium-234. (The numbers following the chemical names refer to the number of protons plus neutrons.) In this reaction, uranium-238 loses two protons and two neutrons to become the element thorium-234.

Explanation:

1. B, the energy associated with the motion of an object

2. C, 12.4 g/mL

3. C, 5

1) B) Kinetic energy is energy associated with the motion of an object.

2) B) Density equals mass divided by volume: 1.38 g/mL

3) C) There are 5 significant figures in 20.300

4) A) 80 is the atomic number for mercury on the periodic table.

5) E) The formula for copper (II) sulfate pentahydrate is CuSO4•5H2O

So in summary:

• Kinetic energy is the energy of a moving object due to its motion.

• Density is calculated by dividing an object's mass by its volume.

• Significant figures refer to the known precision of a measurement based on the digits reported.

• Atomic symbols represent elements on the periodic table.

• Chemical formulas use symbols of the elements to show the proportions of atoms in a compound.

let us give the reaction of nucleophilic substitution reactions,

\(CH3-X + Nu ^{-} --- > CH3-Nu + X^{-}\)

A family of chemical reactions known as nucleophilic substitution reactions occurs when one nucleophile substitutes another. It is pretty reminiscent of the common displacement reactions we observe in chemistry, where a more reactive element replaces a less reactive part from its salt solution. The "leaving group" is the group that accepts an electron pair and displaces the carbon, while the "substrate" is the molecule on which substitution occurs. An anion or neutral molecule is how the departing group exits.

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Answer: Caesium

Explanation:

Caesium has the lowest ionization energy. With the lowest ionization energy, it is the one that will most easily give up electrons.

Answer: cesium

Explanation:(cs)

Answer:  Hello!

first i believe we need a balanced equation to start...

i got 2H2 + 1O2 = 2H2O

This tells us that we need 2 moles of H2 for every 1 mole of O2 Since we only have 1 mole of H2 compared to the 5 moles of O2 hydrogen is the limiting reagent. For illustration, divide the balanced equation by 2 in order to get 1 mole of H2 If we start with 1.0 moles of H2 we'll produce 1.0 mole of H2O

Your welcome <3

Explanation:

The moles would be 12 moles, 4 moles and 11.34 moles

When hydrogen gas (H2) reacts with oxygen gas (O2) to produce water (H2O), the balanced chemical equation is:

2H2 + O2 -> 2H2O

So,

For every 6 moles of H2, 12 moles of H2O will be produced

For every 2 moles of H2, 4 moles of H2O will be produced

For every 5.67 moles of H2, 11.34 moles of H2O will be produced.

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Mass of CO₂ = 132 g

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mole also can be formulated :

\(\tt n=\dfrac{mass}{MW}\)

moles of CO₂ = 3

mass of CO₂(MW=44.01 g/mol) :

\(\tt mass=mol\times MW\\\\mass=3\times 44.01\\\\mass=132.03~g\approx 132~g\)

Answer:

B)10.0 dm3

Explanation:

Now we have to apply Gay-Lussac's law which states that gases combine in simple volumes provided the temperature and pressure remain constant.

                                               2NO(g) + O2(g) ------>2NO

combining volumes                2            :   1               :  2

Volumes before reaction       8.0            6.0               0.0

Reacting volumes                   8.0            4.0                8.0

Volumes after reaction           -                 2.0              8.0

Therefore;

Total volume after reaction = 2.0 + 8.0 = 10.0 dm^3

The volume of the mixture after the reaction is  10 dm³

The correct answer to the question is Option B. 10 dm³

The above is simply a demonstration of Gay-Lussac' law. The volume of the mixture after the reaction can be obtained as follow:

                            2NO(g) + O₂ —> 2NO(g)

Combining Vol:   2 dm³  :  1 dm³   :  2 dm³

Before reaction:  8 dm³  :  6 dm³  :  0

During reaction:  8 dm³  :  4 dm³  :  8 dm³

After reaction:    0 dm³  :  2 dm³ :  8 dm³

The Volume after the reaction = 2 + 8 = 10 dm³

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Answer:

regolith

Explanation:

Carbon and silicon have same number of valance electrons which is 4 electrons

Now, Barium is a 2nd group element. So, it has two valance electrons.

Silicon is a 16th group element and it has 4 valance electrons as does the carbon. This is because they both stay in the same group in the periodic table.

Neon is a noble gas which has 8 valance electrons and stays in the 18th group.

Therefore, carbon and silicon have same number of valance electrons which is 4 electrons.

The electrons in an atom's outermost shell, or energy level, are called valence electrons. For instance, the valence electrons of oxygen are six, with two in the 2s subshell and four in the 2p subshell.

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False. Mixtures can have unique physical properties that differ from the individual components that make them up. For example, the boiling point and freezing point of a mixture can be different from those of the individual components, depending on the composition and relative amounts of each component in the mixture.

Additionally, mixtures can exhibit unique optical properties such as color or refractive index, which may not be present in the individual components. Other physical properties that can be unique to mixtures include viscosity, density, and solubility. Thus, the physical properties of a mixture can provide important information about its composition and behavior.

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Explanation: Hey Sonia, I see I'm not the only one at school struggling in Chem. My best guess is to minimize the likelyhood and size-amount of a chemical reaction.

Answer:

Explanation:

:

4. A physician asks the pharmacy to prepare 0.5 L of a 1:5000 epinephrine solution. The available solution is 1:1000. How many milliliters of sterile water should be added to 125 mL of sucrose so the resultant solution is a 4% solution?

A:

a. 21.5 mL b. 50 mL c. 3125 mL d. 31.25 mL

Scale describes how large or small the elements of the garment are. True

Formal balance is also referred to as asymmetrical. False

The three major lines present in final garments are body, detail, silhouette.

Color can affect the element of line when two colors of intensely opposite hues are placed next to each other. True.

Formal balance is defined as the arrangement of objects in such a way that the object on the opposite sides of a plane are equally placed with the same weight or mass. It is also referred to as symmetrical balance.

A scale is used for the meantime of mass of an object such as garments to know how small or large they are.

The colours that are opposite the one another in the hue of a circle is called complement colours. When they are placed next to each other, there is generation of another colour.

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Answer:

combustion is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.

Answer:

C

Explanation:

ostriches are classified as diurnal

Answer: The answer is diurnal!

Explanation: Nocturnal animals, such as the owl or bat, stay awake during the night and sleep during the day! Which for diurnal animals, they sleep during the night, and roam around during the day! Such as us humans are both because some people may work during the night and sleep during the day! The most common for humans is us sleeping at night though and awake during the day!

Answer:

this is not and reaction of acid and base.(CaOCL2)

Explanation:

Ca2, Cl, are base and O is a neutral.

so how can that be a acid and base reaction

Currents are made by wind blowing over the water.

Currents created by wind are formed through the use of warm and cold air. The warm air becomes lighter through expansion, causing it to rise and transform into a warm air current. Cool air is heavier than the warm air, which makes it move to replace the warm air, thus forming a cool air current.

In short, currents are not made by wind blowing over water, but by the characteristics of warm and cool air acting on one another.

Additionally, the rest of the answers can easily be proven true.

Cold currents do cause nearby coastlines to become colder. This is because these winds blow into the coast and affect the temperature. The process also applies to warm air. Warm air can blow into the coastline and warm the area. (With this, both "Cold currents cause nearby coastlines to be colder," and "Warm currents cause nearby coastlines to be warmer," have been shown to be truthful.)

Oceans more more slowly than wind is also correct. The ocean is an uninterrupted surface which winds can peacefully blow across. This lack of disruption causes the winds to move quickly - much faster than even the ocean itself. The ocean('s) currents move slower than the winds. (Therefore, "Oceans move more slowly than wind," had been proven true.)

Oceans hold more heat than atmosphere on land has a simple explanation: the Sun. As we know, this humongous, fiery star we depend on for survival spreads its sunlight all over Earth. The oceans are no exception. The ocean(s) absorb(s) this sunlight and transform(s) it to heat and energy. Since water has a higher capacity for heat compared to air, it can store larger amounts of heat with less of a change in temperature (than air). (For that reason, "Oceans hold more heat than atmosphere on land," is indeed a factual statement.)

All of the options, apart from Currents are made by wind blowing over the water, have been proven true. With that being said, our answer is clear. (Hope this helps - have a lovely week!)

Answer:

currents are made by wind blowing over the water

Explanation:

In which direction does weather typically move? a. from east to west c. from north to south b. from west to east d. from south to north *this is the next question on the test and the answer is FROM WEST TO EAST*

Which of these describe a warm front?

Warm and cool air mass that are not strong enough to move one another

Cold air meets warm air, fast moving and stormy. Severe weather is likely.

Warm air meets cold air. Slow moving with less severe weather.

Ocean surface temperature is greater than 80F.

*these are the third question answers and there are no brainly answers online, so the answer to this one is, WARM AIR MEETS COLD AIR. SLOW MOVING WITH LESS SEVERE WEATHER.*

hope this helps :)

Answer: Heyo Kenji Here! Here's your answer- In addition, since the external battery source is what drives the electrons through the circuit, the electrodes will match the positive and negative terminal of the battery. While the anode remains the site of oxidation, it becomes the positive terminal, and the cathode becomes the negative terminal.

Explanation: Hope this helps!

Have a nice day!
- Kenji ^^

Answer: In a galvanic (voltaic) cell, the anode is considered negative and the cathode is considered positive. This seems reasonable as the anode is the source of electrons and cathode is where the electrons flow. However, in an electrolytic cell, the anode is taken to be positive while the cathode is now negative.

Explanation: I hope this helps!

Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.