Which choice correctly identifies the oxidation number (O.N.) for the given species?
A) Mn²⁺, O.N. = 0
B) Ca, O.N. = +2
C) F₂, O.N. = -1
D) Se²⁻, O.N. -2
E) P₄, O.N. = -1

Answer

27.59 is the answer

Answer:

I love Science anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Explanation:

2.62 moles of glucose can react with 15.7 moles of oxygen. The balanced chemical equation for the combustion of glucose is:

C6H12O6 + 6O2 → 6CO2 + 6H2O

From the equation, we can see that for every mole of glucose that reacts, 6 moles of oxygen are required. Therefore, the number of moles of glucose that can react with 15.7 moles of oxygen can be calculated as follows:

Number of moles of glucose = (Number of moles of oxygen) / 6

Number of moles of glucose = 15.7 / 6

Number of moles of glucose = 2.62

Therefore, 2.62 moles of glucose can react with 15.7 moles of oxygen.

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Noble gases, due to their inertness and stable electronic configurations, are the least likely to undergo a disproportionation reaction.

Disproportionation reactions occur when a single substance undergoes both oxidation and reduction simultaneously. In the given passage, it is likely that the species mentioned are chemically reactive, as they have the potential to undergo such reactions.

However, noble gases are known for their inertness and lack of reactivity. These elements, including helium, neon, argon, krypton, xenon, and radon, have a stable electronic configuration with a full valence shell, making them highly unreactive.

Noble gases have a complete octet of electrons in their outermost energy level, which provides them with exceptional stability. As a result, they do not readily gain or lose electrons, making disproportionation reactions highly unlikely to occur. These elements are characterized by their low reactivity and reluctance to form chemical bonds with other elements. Their electronic configuration already satisfies the octet rule, eliminating the need for electron transfer or sharing.

Due to their lack of reactivity, noble gases are commonly used in various applications where chemical stability and inertness are crucial. For example, helium is used in balloons and airships due to its low density and non-flammability.

Argon is employed in welding to prevent oxidation of the metal and to create an inert atmosphere. The stability and unreactivity of noble gases make them the least likely candidates for undergoing disproportionation reactions.

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Answer:

melting

Explanation:

one change of state happens when you add energy to the substance. This change of state is called melting. By adding energy to the molecules in a solid the molecules begin to move quicker and can break away from the other molecules.

The volume of O₂ : 21 L

Given

8.7 grams of C₂H₄

Required

Volume O₂

Solution

Reaction

C₂H₄ + 3 O₂ ⇒ 2 CO₂ + 2 H₂O

mol C₂H₄(MW= 28 g/mol) :

= mass : MW

= 8.7 g : 28 g/mol

= 0.311

From the equation, mol  O₂ :

= 3/1 x mol C₂H₄

= 3/1 x 0.311

= 0.933

At STP, 1 mol gas=22.4 L, so for 0.933 mol :

= 0.933 x 22.4 L

= 20.899 L ≈ 21 L

4 hybrid sp3 orbitals

Four sp3 hybrid orbitals emerge from the hybridization of a s orbital with each of the three p orbitals (px, py, and pz).

The binding angle between the sp3 hybrid orbitals is 109.5 degrees. Tetrahedral molecular structure can be explained via sp3 hybridization. It produces four sp3 orbitals, each of which is made up of 75% p character and 25% s character, by the hybridization of the two 2s orbitals and all three of the two 2p orbitals. We shall use carbon as an example because of how important it is to organic chemistry. The three 2p orbitals and the two 2s orbitals of carbon combine to generate four sp3 orbitals. Following an sp3-s orbital overlap, these orbitals join with four hydrogen atoms to form methane. The outcome shape is tetrahedral, since that minimizes electron repulsion.

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the answer to this equation is " double replacement "

hopefully i helped

Answer:

9 moles of reactants chemically change into 11 moles of product

Explanation:

More energy is required to break the bonds in octane, and more energy is released when the products are formed.

Burning one mole of hydrogen gas (H2) and one mole of octane (C8H18) yields different amounts of energy and products. The balanced chemical equations for the combustion of hydrogen and octane are:

Hydrogen: 2H2 + O2 -> 2H2O + energy (where energy is released in the form of heat)

Octane: C8H18 + 12.5O2 -> 8CO2 + 9H2O + energy (where energy is also released in the form of heat)

When one mole of hydrogen is burned, it releases 241.8 kJ of heat energy, whereas when one mole of octane is burned, it releases 5471 kJ of heat energy.

The combustion of octane produces more energy because it contains more carbon atoms than hydrogen atoms, and carbon-carbon bonds are stronger than carbon-hydrogen bonds.

As a result, more energy is required to break the bonds in octane, and more energy is released when the products are formed.

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Answer:

Virus is living due to reproduction and non-living due to crystal appearance.

Explanation:

Characteristics that viruses display is the ability of reproduction in which they increase in population which is a living character and have DNA or RNA which help them to make exact copies of itself. Virus is parasitic in nature because it causes harm to the living host such as humans, animals and plants. Some characteristics that viruses don't display are that they are not like living cells, have no membrane around them, no organelles such as mitochondria, golgi bodies, endoplasmic reticulum and lysosomes etc. Viruses are present in crystal form outside the cell.

Answer:

the answer is C neutral

Explanation:

if the ph is lower then 7 its acidic

if its higher then 7 its basic

and a ph of 7 is neutral

Answer: he natural area of productive soils is limited – it is under increasing pressure of intensification and competing uses for cropping, forestry, pasture / rangeland and urbanization, and to satisfy demands of the growing population for food and energy production and raw materials extraction

The model in use helps in providing aid in fields that the plant needs to survive, hence it proves to be a crucial step in the growth of the plant.

Mushrooms from fungal mycelial networks in the dirt  decompose organic matter and convert them into nutrients. Growing trees, and other plants, can then take these nutrients via their roots. This process is called decomposition.

In this process, matter from the environment (in the form of CO2 and H2O) is obtained  and rearranged into organic molecules (sugars). These organic molecules can impluse the producers’ life processes via cellular respiration (which releases CO2 and heat), or they can be saved as biomass.

The process of photosynthesis is also involved in the creation of usable energy. In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water.

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Answer: The molarity of given solution is 17.75 M.

Explanation:

Given: Moles = 3.55 mol

Volume of solution = 0.2 L

Molarity is the number of moles of a solute present in liter of solution.

Hence, molarity of the given solution is calculated as follows.

\(Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{3.55 mol}{0.2 L}\\= 17.75 M\)

Thus, we can conclude that the molarity of given solution is 17.75 M.

Answer:

Co2(CO3)3

Hope this helps!!

Answer:

isobars

Explanation:

How?

So they are isobars

answer: yes I believe so

explain: I just think it is I have done this before

Answer:

The process of dissolving frees the electrons in the solution to move.

Explanation:

The process of dissolving is known as "dissociation": the process in which ionic solids (salt, or sodium chloride is an ionic compound), separate into ions in a solvent. (water is the solvent).

When dissolved in water, the dissociation equation looks something like this: \(NaCl_{(s)}\) ⇄ \(Na^{+}_{(aq)}\) + \(Cl^{-}_{(aq)}\)

Before dissolving, sodium chloride (salt), was structured as positive cations (sodium) and negative anions (chloride) in a fixed lattice position. This results in the absence of mobile charge carriers, which is thus the reason why this doesn't conduct. However, after dissolution (dissociation), the ionic bonds are broken, producing mobile ions and thus conducting electricity.

Answer: B

Explanation:

protons are positive,

electrons are negative,

and neutrons are neutral.

the amount of electrons to protons is always the same in a balanced atom.

electrons can be removed creating "ions" which is simply an unbalanced atom. removing protons would result in a different type of atom or element.

Answer:

Neutron - neutral

Explanation:

This was the correct answer for the test I just took.

Answer:

3.333M

Explanation:

Basically,

Molarity=(moles of solute)/(litres of solution)

=(0.5 moles)/(150/1000)L

=3.333M

Answer:

why do people add sugar to drinks to make them sweeter

Four distinct kinds of brass are

Copper zinc brasses contain a combination of copper (Cu) and zinc (Zn). Tin brasses are produced using copper (Cu), zinc (Zn) and tin (Sn). Leaded brasses are involved copper (Cu), zinc (Zn) and lead (Pb). Further kinds of brasses incorporate alpha brass, beta brass and alpha-beta brass.

There are over 60 sorts of brass, the most fundamental categorisation can be considered to bunch all brasses into three primary families, copper zinc brasses (Cu-Zn), Leaded brasses (Cu, Zn, Pb) and tin brasses (Cu, Zn, Sn) these can then be further sub-divided by their more unambiguous properties and uses.Brass is a composite of copper and zinc; how much zinc present is the principal factor influencing types, or grades, of brass. The utilization of brass is legitimate as far back as the third thousand years BCE around the Aegean, Iraq, Georgia and Turkmenistan regions despite the fact that there have been a few segregated finds in China tracing all the way back to the fifth thousand years BCE. The Roman realm involved brass for their coins, and it even gets a notice in the Ruler James' Book of scriptures and in a portion of crafted by Shakespeare.

Brass has a very decorative, radiant brilliant gloss; joined with its high functionality and sturdiness, it provides an ideal answer for the production of hard wearing parts that likewise may should stylishly please. It is utilized to make instruments, machined parts, evaporator parts, fireboxes, elaborate castings, shop fittings, expelled segments, design expulsions, clasp, window outlines, stepped parts, blanked plates, heat exchangers and general copper-smithing applications. Brass doesn't 'ignite' when it is struck, which makes it suitable for use in risky or possibly flammable environments.

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Answer:

Which one do you need the answer to?

Explanation:

The balanced chemical reaction :

GIVEN

• Mass of Potassium chlorate KClO3 = 16 g

• Molecular mass KClO3 = 122,55 g/mol

10 moles KClO3 produces 10 moles KCl

therefore ;

0.131 moles of KClO3 will produce 0.13 moles of KCl

{ take note that the ratio if 1:1 , meaning for every 1 mole of KClO3 , 1 mole of KCL willbe produced }

The volume of an object that has a mass of 0.255 kg and a density of 2.89 g/cm³ is approximately 88.24 cm³.

To find the volume of an object with a mass of 0.255 kg and a density of 2.89 g/cm³, you can follow these steps:

1. Convert the mass from kg to grams: 0.255 kg * 1000 g/kg = 255 g

2. Use the formula for density: Density = Mass/Volume

3. Rearrange the formula to find the volume: Volume = Mass/Density

4. Substitute the given values: Volume = 255 g / 2.89 g/cm³

Your answer: The volume of the object is approximately 88.24 cm³.

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Answer:

"statement 2" for the first pair and "statement 1" for the second pair

Explanation:

Answer:

382.5 grams

Explanation:

Find the molar mass of NaNO₃ and then multiply the number of moles by that molar mass :)

Answer:

b

Explanation:

Answer: A

Explanation:

The new molarity of the solution is 0.5M.

The molarity of a solution can be calculated by using the following expression:

C1V1 = C2V2

Where;

According to this question, a chemist dilutes 2.0 L of a 1.5 M solution with water until the final volume is 6.0 L.

1.5 × 2 = 6 × C2

3 = 6C2

C2 = 3/6 = 0.5M

Therefore, the new molarity of the solution is 0.5M.

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