what coefficient would fall before the formula "KO₂"?
KO2 + CO2 →→ K₂CO3 + 02

The mass of trifluoroacetic acid, C₂HF₃O₂ which contains 77.7 g of fluorine is 155.4 grams

We'll begin by obtaining the mass of C₂HF₃O₂ in one mole. Details below:

Thus, we can say:

57 grams of fluorine, F are present in 114 grams of C₂HF₃O₂

With the above information, we can obtain the mass of C₂HF₃O₂ that contains 77.7 g of fluorine. Details below:

57 grams of fluorine, F are present in 114 grams of C₂HF₃O₂

Therefore,

77.7 grams of fluorine, F will be present in = (77.7 grams × 114 grams) / 57 grams = 155.4 grams of C₂HF₃O₂

Thus, from the above calculation, we can conclude that the mass of trifluoroacetic acid, C₂HF₃O₂ is 155.4 grams

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Answer:

81 gm

Explanation:

The mass of 1 mole is 27 g

So, Mass of 3 moles of Aluminium would be 3 × 27 = 81 gm..Thus mass of 3 Moles of Aluminium is 81 gm.

A material that has been treated, pοlished, οr brοken recently has a shiny appearance and is excellent at transferring heat and electricity. Metal is the name. Metals are typically flexible and ductile.

A material's ductility is its capacity tο withstand being hammered thin οr stretched intο wire withοut breaking.

In: Pοst-transitiοn metals include indium. At rοοm temperature, it remains sοlid.

Rn: Radοn, is delegated a respectable gas. At rοοm temperature, it is gas.

Se: Selenium belοngs tο the nοn-metal class. At rοοm temperature, it remains sοlid.

As: Arsenic falls intο the metallοid οr semi-metal categοry.

Ru: Ruthenium belοngs tο the class οf transitiοn metals. At rοοm temperature, it remains sοlid.

Ta: Tantalum belοngs tο the grοup οf transitiοn metals. At rοοm temperature, it remains sοlid.

Eu: Eurοpium belοngs tο the class οf lanthanides. At rοοm temperature, it remains sοlid.

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The Edge length of unit cell is 4*10⁻⁸ cm.

What is tungsten?

Chemical element tungsten (W), often known as wolfram, is a Group 6 (VIb) refractory metal that is incredibly strong and is used to make lamp filaments and to boost the hardness and strength of steels.

What is cations ?

A positively charged cation is an atom or molecule with more protons than electrons. Eg: Na+ 3. An anion is an atom or molecule that is negatively charged, meaning it contains more electrons than protons.

O⁻²⇒ mid of all edges

no.of ion shared from 1 edge = 1/4

total edges = 12

total o⁻² ions = 12*1/4

total o⁻² ions = 3

tungsten caution ⇒ each corner

no.of ions shared from corner = 1/8

total corner = 8

total tungsten ion = 8*1/8

total tungsten ion = 1

empirical formula = wo₃

b) density = Z*M/Na * a³

Here, Z= 1( number of molecule in 1 Unit cell)

M= molar mass of WO₃= 231.84 gm / mole

Na = Avogadro number = 6.022*10²³

a= edge length

6.013= 1*231.84/ 6.022*10²³ *a³

a³= 231.84 * 10⁻²³ / 6.013 * 6.022

a³= 6.403 * 10⁻²³

a³= 6.403 * 10⁻²⁴

a= 4*10⁻⁸ cm

Therefore, the Edge length of unit cell is 4*10⁻⁸ cm.

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Answer:

unbalanced, direction of movement: left

Explanation:

because im smart

Answer:

unbalanced, direction of movement: to the left

Explanation:

Hope this helps :)

Answer:

Maybe this is what your looking for

Isotopes are various forms of an element that have the same number of protons but a different number of neutrons. Some elements, such as carbon, potassium, and uranium, have multiple naturally-occurring isotopes. Isotopes are defined first by their element and then by the sum of the protons and neutrons present.

Carbon-12 (or 12C) contains six protons, six neutrons, and six electrons; therefore, it has a mass number of 12 amu (six protons and six neutrons).

Carbon-14 (or 14C) contains six protons, eight neutrons, and six electrons; its atomic mass is 14 amu (six protons and eight neutrons).

While the mass of individual isotopes is different, their physical and chemical properties remain mostly unchanged.

Isotopes do differ in their stability. Carbon-12 (12C) is the most abundant of the carbon isotopes, accounting for 98.89% of carbon on Earth. Carbon-14 (14C) is unstable and only occurs in trace amounts. Unstable isotopes most commonly emit alpha particles (He2+) and electrons. Neutrons, protons, and positrons can also be emitted and electrons can be captured to attain a more stable atomic configuration (lower level of potential energy ) through a process called radioactive decay. The new atoms created may be in a high energy state and emit gamma rays which lowers the energy but alone does not change the atom into another isotope. These atoms are called radioactive isotopes or radioisotopes.

Explanation:

Isotopes are various forms of an element which have the same number of protons but a different number of neutrons, like carbon, potassium, and uranium, have multiple naturally-occurring isotopes.

Carbon-12 shows  six protons, six neutrons, and six electrons; it has a mass number of 12 amu (six protons and six neutrons).

Carbon-14 (or 14C) have six protons, eight neutrons, and six electrons; it has the atomic mass is 14 amu (six protons and eight neutrons).

The  mass of individual isotopes is different where as physical and chemical properties remain mostly unchanged. Carbon-12 (12C) is the most abundant of the carbon isotopes which accounting for 98.89% of carbon on Earth.

Carbon-14 (14C) is unstable  and it only occurs in trace amounts. Unstable isotopes emit alpha particles (He2+) and electrons. Neutrons, protons, and positrons.

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Answer:

Keq = 0.013

Explanation:

Keq is the ratio of the concentrations of the products to the concentration of the reactants.

For any reaction aA+bB->cC+dD (a,b,c,d are coefficients), \(K_{eq}=\frac{[C]^c[D]^d}{[A]^a[B]^b}\).

Furthermore, pure solids and liquids are omitted from these Keq expressions; the only things included in Keq expressions are aqueous or gaseous substances.

Since the coefficients for all reactants and products in the given reaction is 1 and water is omitted because it is a pure liquid, \(K_{eq}=\frac{[F^-][H_3O^+]}{[HF]}\).

Plugging in the concentrations gives \(K_{eq}=\frac{0.020*0.020}{0.030}=\frac{0.020^2}{0.030}=\frac{0.00040}{0.030}=0.013\).

Answer:

force exerted per unit area by gas particles as they strike the surfaces around them

Explanation:

According to the kinetic molecular theory, a gas is composed of molecules. The molecules of a gas are in constant random motion and collide frequently with each other as well as with the walls of the container.

Pressure is defined as force per unit area. The pressure of a gas is the force exerted per unit area by gas particles as they strike the surfaces around them hence the answer above.

When n=2 this means that the electron is located on the second energy level. We then calculate the momemtum quantum number which is n-1. In this case the momentum quantum number is 1 (l=1). The magnetic quantum number ml is given by -l to +l. Therefore when n=2, the ml= -1,0,+1

When n=6 and l=5, ml would have values -5 to +5.

ml values are: -5,-4,-3,-2,-1,0,1,2,3,4,5

Answer:

something that can be maintained over a period of time

Answer:

a balance between meeting today's needs.......

Explanation:

Answer:

I believe your answer is

Explanation:

when the pressure is less I believe it means rain is coming

Answer:

It determines the stability electric state of the atom

Explanation:

Now atoms are stable depending on the number of neutrons they have in their nuclei. If the no of electrons Equal no of protons then the atom is said to be neutral

bear in mind that neutrons have no charge so they don't affect the atom's electric state.

it's the neutrons that determines the atom's radioactive state

Answer:

i) The size of X ion is greater than that of X atom even though both contain the same number of protons because the ion has fewer electrons compared to the atom. When an atom forms an anion (negative ion), it gains electrons, which causes increased electron-electron repulsion. This repulsion causes the electron cloud to expand, and as a result, the ion becomes larger than the neutral atom.

In the case of element X, when it forms an ion with a -3 charge, it will gain 3 more electrons, increasing the total number of electrons to 18. This will cause the size of the X ion to be larger than the neutral X atom.

ii) To determine the compound of X in the -3 oxidation state, we first need to determine the element's identity. We know that X has 15 electrons in total (2 in the K shell, 8 in the L shell, and 5 in the M shell). Therefore, X has an atomic number of 15, which corresponds to phosphorus (P).

Since phosphorus is in the -3 oxidation state, it gains 3 electrons and becomes P^3-. To form a compound, we need a cation that can balance the negative charge. A common example is aluminum (Al), which has a +3 charge (Al^3+). When phosphorus and aluminum combine, they form the compound aluminum phosphide with the formula AlP.

Answer:

14.9 mol

Explanation:

To find the number of moles in a given mass of a sample of sodium chloride (NaCl), we can multiply the number of grams in the sample by the molar mass of sodium chloride, which is 58.44 g/mol.

871 g × (1 mol / 58.44 g)

= 871/58.44 mol

≈ 14.9 mol

Note that we rounded to 3 significant figures in the final answer because that is how many significant figures were given in the mass measurement of the sodium chloride sample.

Answer:

heat energy

Explanation:

Conduction is the transfer of heat energy from one substance to another or within a substance.

The balanced chemical equation is AlI₃(s) + 3 K(s) → 3 KI(s) + Al(s). The number of moles of aluminium will be 2.437moles.

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Answer:

rrgggf in the world of the world of the world of the up the good morning I will take a user and pass it on the

To determine the number of moles in each substance, we need to divide the mass of the substance by its molar mass.

67.42 g Si:

The molar mass of Si is 28.0855 g/mol (rounded to 4 decimal places). Therefore, the number of moles of Si is:

67.42 g / 28.0855 g/mol = 2.3992 mol (rounded to 4 decimal places).

11.82 g gold:

The molar mass of gold is 196.9665 g/mol (rounded to 4 decimal places). Therefore, the number of moles of gold is:

11.82 g / 196.9665 g/mol = 0.060 mol (rounded to 3 decimal places).

28.8 g Br₂:

The molar mass of Br₂ is 159.808 g/mol (rounded to 3 decimal places). Therefore, the number of moles of Br₂ is:

28.8 g / 159.808 g/mol = 0.1803 mol (rounded to 4 decimal places).

Therefore, the number of moles in each substance is:

2.3992 mol Si

0.060 mol gold

0.1803 mol Br₂.

Answer:

Even because you always add the previous two terms in the sequence. Since they are both odd, the next term will be even. (odd+odd = even)

Explanation:

Answer:

a) Platinum > Beryllium > Aluminum > Magnesium > Potassium > Cesium

b) Cesium > Potassium > Magnesium > Aluminum > Beryllium > Platinum

c) Cesium > Potassium

Explanation:

We must recall that the frequency of an electromagnetic wave is directly proportional to its energy. Hence as the work function of the metal increases, the minimum frequency required for emission of electrons occur increases accordingly.

Similarly, the maximum wavelength required for electron emission to occur varies inversely as the work function of the metal hence the answer provided.

Lastly, only caesium and potassium has work function less than the energy of the incident photon hence only these two metals experience electron emission with the kinetic energy of electrons emitted from caesium greater than that emitted from potassium.

Answer:

GHG emissions are often measured in carbon dioxide (CO2) equivalent. To convert emissions of a gas into CO2 equivalent, its emissions are multiplied by the gas's Global Warming Potential (GWP).

Answer:

When a substance undergoes changes in its chemical composition or combines with another substance to form a new substance is referred to as chemical change. In contrast, physical change is defined as the change in appearance or state of matter and not the chemical composition of the substance.

Explanation:

When a clear liquid is boiled or heated, the kinetic energy of the molecules increases, and the evaporation of the liquid takes place faster. For example, evaporation is a type of physical change, in which the liquid is heated to form bubbles or vapors. These vapors rise in the air and decrease the volume of the liquid. In this process, the liquid has only changed its state of matter (liquid to gas) and not the chemical composition. Thus, there is no chemical change taking place in the heating of water and only physical change is taking place.

It is a redox reaction because CU is oxidized and the nitrogen atom in NO3 is reduced.

A chemical reaction is a system wherein one or more materials, additionally referred to as reactants, are converted into one or extra extraordinary materials referred to as merchandise. materials are either chemical elements or compounds. Chemical reactions rearrange the constituent atoms of reactants to produce extraordinary materials as merchandise.

The houses of the product vary from the ones of the starting cloth. A chemical reaction isn't the same as a bodily change that entails a exchange of country, along with ice melting to water or water evaporating to steam. while a physical trade takes place, the bodily homes of count change, but its chemical identification stays the identical.

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After considering all the given options we come to the conclusion that the set of products that are accurate for double replacement reaction is 2KNO₃ (aq) + PbI₂ (s), which is Option D under the condition that the given reaction is 2KI(aq) + Pb(NO₃)₂(aq).

A double replacement reaction generally comprised of reactions in regarding the positive and negative ions of two ionic compounds exchanges locations to form two new compounds. The general form for this type  reaction is: AB + CD → AD + CB .
For instance, when silver nitrate (AgNO₃) is added  with sodium chloride (NaCl), the following reaction takes place AgNO₃ + NaCl → AgCl + NaNO₃ ²

The correct set of products for the double replacement reaction 2KI(aq) + Pb(NO₃)₂(aq) is 2KNO₃ (aq) + PbI₂ (s).
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Answer:

I need to se the options