How much water (H2O ) would form if 4.04 g of hydrogen (H2) reacted with 31.98 g of oxygen (O2 )?
(2H2 + O2 2H2O)

Answer:

C

Explanation:

Because that's the spin in its orbitals.

Answer: First we start with our molecular equation to ensure all atoms are balanced to maintain the law of conservation of mass.

.

The equation is unbalanced since we have 1 Cl atom on the left-hand side as opposed to 2 on the right-hand side and 2  molecules on the left-hand side and 1 on the right-hand side. So we add a coefficient of 2 on  both the  and

Explanation:

The reaction occurs between solutes soluble in water to give a solid as a residue. So the complete ionic equation will show the soluble compounds in their dissociated states as ions in water and the insoluble compound as a solid.

The amount or initial volume of the acid required is determined as 60 mL.

The amount of 12.5 molar acid required to create a 250.0 mL solution is calculated by using the following formula

C₁V₁ = C₂V₂

Where

The given parameters include;

Initial concentration of the acid, C₁ = 12.5 M

Final concentration of the acid, C₂ = 3.0 M

Final volume of the acid, V₂ = 250.0 mL

V₁ = ?

The amount or initial volume of the acid required is calculated as;

12.5 (V1) = 3  x 250

V₁ = (3 x 250 ) / 12.5

V₁ = 60.0 mL

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The phase diagram makes it possible to predict the stability of any of the phases of water based on the diagram..

Water is able to exist in three phases; solid, liquid and gas. The reason behind the phases of water is the fact that there are different degrees of intermolecular interactions that exists in the various phases of water.

Thus, on the phase diagram, of is easy to trace the the regions of temperature and pressure that corresponds to the solid, gaseous and liquid states of a given substance that could be used to make deduction about the substance.

The phase diagram shows the interaction between the various phases of water on the same diagram. This makes it possible to predict the stability of any of the phases of water based on the diagram.

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Answer:

A

Explanation:

A chemical change started immediately and finished at eight minutes

Answer:

The answer is

A.) A chemical change started immediately and finished

at eight minutes.

Explanation:

The mass fraction of the pro eutectoid phase is approximately 0, and of the pearlite phase is approximately 1.

In iron-carbon alloy with 0.60 wt% carbon, the pro eutectoid phase is cementite (Fe₃C). To calculate the mass fractions of the pro eutectoid phase and the pearlite phase,  consider the eutectoid reaction.

Eutectoid reactions in iron-carbon alloys are usually found at a composition of approximately 0.76 wt% carbon. As the alloy in question contains 0.60 wt% carbon it is hypo-eutectoid (i.e., below the eutectoid composition).

The lever rule will be used to calculate this equation  as follows:

f₁ = \(\frac{C_{0} - C_{e} }{C_{1} - C_{e} }\)

where the values represent here :

f₁ = mass fraction of the pro eutectoid phase (cementite),

Cₒ =carbon content in the alloy (0.60 wt%),

Cₑ =eutectoid composition (0.76 wt%),

C₁ = carbon content in the cementite phase (6.70 wt% carbon).

After substituting the given values into the equation:

f₁ = \(\frac{0.60 - 0.76}{6.70 - 0.76} \\\)

f₁ = \(\frac{0.16}{5.94}\)

f₁ ≈ -0.027

Here the negative value of f₁ shows that there is no pro eutectoid phase present in the alloy. Rather, the entire alloy consists of the pearlite phase.

Hence ,  the mass fraction of the pro-eutectoid phase is approximately 0, and the mass fraction of the pearlite phase is approximately 1.

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The reason why the freezing point depression of a solvent depends on the concentration, it is because the solute occupies space between the solvent molecules.

The freezing point depression of a solvent does depend on the concentration of the solute because the solute occupies space between the solvent molecules, thus reducing the number of molecules that can interact.

When a solute is dissolved in a solvent, it takes up space between the solvent molecules. This reduces the number of molecules that can interact, and thus lowers the freezing point of the solvent. The more concentrated the solution, the greater the effect on the freezing point.

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Two new compounds are the most likely description of the products of a double-displacement reaction (Option B).

A double displacement chemical reaction can be defined as a reaction where ions present in two different compounds react in order to generate one or more new compounds which are present in an aqueous media.

Therefore, with this data, we can see that a double displacement chemical reaction is based on the reaction of ionic compounds in order to generate two or more new compounds in water.

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Answer: X is an Esther

Explanation: alcohol and carboxylate acid forms esters

When a carboxylic acid and alcohol react then-new substance is produced from esterification and hence is called an ester. Thus, option 2 is correct.

Esterification is the process to make esters from carboxylic acids and alcohol in the presence of an acid catalyst (dry sulphuric acid). The -COOH group of the carboxylic acids contributes to the formation of the esters.

The esterification reactions are reversible reactions and occur at a slower pace. The reaction between an acid and alcohol is shown as:

Butanoic acid + 1-pentanol (catalyst) →  water + ester

Therefore, option 2. ester is produced.

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Answer:

0 being the lowist 14 being the hieist 0 is the most acidic 14 is the hieist base 7 is nutrol

Explanation:

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Answer:the number of electrons is equal to the number of protons in a neutral atom that is. In a cation or anion atom you either gain or lose electrons. Let’s say it’s a cation +3 you lose 3 electrons. Now let’s say it’s an Anion -3 you gain 3 electrons. Hope this helps.

Explanation:

Answer:

The formula for the anhydrous compound that was part of the mixture called natron that was used by the Egyptians is Na2(CO3)10(H2O).

They use this compound for medicine, cookery, agriculture, in glass-making and to dehydrate egyptian mummies.

Compound of sodium carbonate and sodium bicarbonate was the name of the resulting hydrate that formed.

Answer:

A. Florine has a stronger pull than Magnesium

Explanation:

Electronegativity refers to the tendency in which an tom would attract electrons to itself.

Below each element in the periodic table is their electronegativity value. Florine has the highest electronegativity value of 4.0.

Going through options;

A. Florine has a stronger pull than Magnesium

Florine = 4.0

Magnesium = 1.2

This correct

B. Hydrogen has a stronger pull than Phosphorus

Hydrogen = 2.1

Phosphorus = 2.1

This is wrong

C. Potassium has a stronger pull than Sodium

Potassium = 0.8

Sodium = 0.9

This is wrong

D. Iron has a stronger pull than Bromine

Iron = 1.8

Bromine = 2.8

This is wrong

Answer:

Reversible reactions that happen in a closed system eventually reach equilibrium. At equilibrium, the concentrations of reactants and products do not change. But the forward and reverse reactions have not stopped - they are still going on, and at the same rate as each other.

When any reversible reaction is at equilibrium, the conditions are necessarily true are the amount of reactant and products stops changing, and the rate of forward reaction equals rate of backward reaction. The correct options are B and D.

A reversible reaction occurs when the conversion of reactants to products and the conversion of products to reactants occur at the same time.

A and B can react to form C and D, or C and D can react to form A and B in the reverse reaction. In thermodynamics, this is not the same as a reversible process.

In a closed system, reversible reactions eventually reach equilibrium. The concentrations of both reactants and products remain constant at equilibrium.

But the forward and reverse reactions have not stopped; they are still occurring at the same rate.

Reversible reactions continue until equilibrium is reached, which means that the amounts of reactant and product are balanced.

Thus, the correct options are B and D.

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Your question seems incomplete, the missing options are attached below as image:

Answer:

C. Amount of 3 dimensional space the object occupies

Explanation:

Single dimension is a laminar

Amount of 2 dimension is area

Amount of 4 dimension is negligible

\(.\)

Answer C. Amount of 3 dimensional space the object occupies 

Explanation:

 Single dimension is a laminarAmount of 2 dimension is areaAmount of 4 dimension is negligible

Answer:

A

Explanation:

I would say A because the sun makes energy right so if you are looking for an arrow or arrows I would say A I hope this helps!! and have a great day or night

Answer:

A and E

Explanation:

the other guy was correct but E also demonstrate a conservation of mass and energy.

To answer this question, we first need to understand the chemical formula for diphosphorous pentoxide. The formula is P2O5, which means that each molecule of diphosphorous pentoxide contains two atoms of phosphorous and five atoms of oxygen. Next, we need to use the molar mass of diphosphorous pentoxide to determine how many moles of the compound are in a 15.5 gram sample. The molar mass of P2O5 is 141.94 g/mol (30.97 g/mol for each phosphorous atom and 16.00 g/mol for each oxygen atom), so we can use the following equation to calculate the number of moles:
moles = mass / molar mass
moles = 15.5 g / 141.94 g/mol
moles = 0.1092 mol

Now that we know the number of moles of diphosphorous pentoxide in the sample, we can use the mole ratio from the formula to determine the number of moles of phosphorous:
1 mol P2O5 contains 2 moles of P
0.1092 mol P2O5 contains 0.2184 mol of P

Finally, we can use the molar mass of phosphorous (30.97 g/mol) to convert the number of moles to grams:
grams of P = moles of P x molar mass of P
grams of P = 0.2184 mol x 30.97 g/mol
grams of P = 6.76 g
Therefore, a 15.5 gram sample of diphosphorous pentoxide contains 6.76 grams of phosphorous.

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Yes, laboratory specific gravity and absorption tests are commonly run on two coarse aggregate sizes, typically the nominal maximum size aggregate (NMAS) and the size fraction larger than the NMAS.

The NMAS is defined as the largest sieve size that allows all of the aggregate to pass through, and typically ranges from 19 mm to 37.5 mm depending on the grading requirements for the specific application.

The reason for testing both sizes is to ensure that the aggregate meets the requirements for both the coarse and fine aggregate fractions in the mix. The specific gravity and absorption values are used to calculate the amount of water and air in the concrete mix, which can affect its strength, durability, and workability.

The specific gravity test determines the density of the aggregate relative to water, while the absorption test determines the amount of water that the aggregate can absorb. These tests help ensure that the aggregate is not excessively absorptive, which can lead to increased water demand and decreased strength of the resulting concrete.

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Answer:

Complete the table to show the relative charge of each particle and the number of each particle found in a

140 Ce2+ ion.

Particle

Relative charge of each particle Number of each particle present

in a 140 Ce2ion

proton

neutron

electron

1.0.1 58. 82. 60

O -1.0, +1 58. 82. 60

0-1.0. + 1 58, 82, 56

O +1, 0, -1 58, 82, 56

Explanation:

Germanium (Ge) with a charge of -4

11111111111111111111111111

We can conclude that each carbon atom in acetylene shares one pair of electrons with the hydrogen atom and three pairs with the other carbon atom.

A chemical bond is a long-lasting attraction between atoms or ions that allows molecules and crystals to form. Ionic bonds are formed by the electrostatic force between oppositely charged ions, whereas covalent bonds are formed by the sharing of electrons.

Each carbon atom in acetylene shares one pair of electrons with the hydrogen atom and three pairs with the other carbon atom.

The carbon atom contains four electrons. It requires four electrons to become stable in its outermost shell. Two carbon atoms covalently bond three pairs of electrons with each other in acetylene, and the remaining pair covalently bonds with two hydrogen atoms.

As a result of the carbon and hydrogen atoms becoming more stable, we can conclude that in acetylene, each carbon atom shares one pair of electrons with the hydrogen atom and three pairs with the other carbon atom.

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Answer:

greater

Explanation:

increase, for example a door handle. imagine how much force u need to open it if it was in the middle of the door? more u need.

Answer:

Yes

Explanation:

A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.

Answer:

London dispersion < hydrogen bonds< covalent bonds< ionic interactions

Explanation:

Molecules interact with each other in each of the states of matter. The extent and type of intermolecular interaction exhibited by a substance depends on the nature of bonding between the atoms of the substance.

Intermolecular interactions determine important properties of a substance such as melting and boiling points, polarity etc.

The order of increasing interaction is;

London dispersion < hydrogen bonds< covalent bonds< ionic interactions

The molarity of the solution is 5.428 M, with 4 significant figures.

To calculate the molarity of a solution, we need to know the amount of solute (in moles) and the volume of the solution (in liters).

Molarity = moles of solute / volume of solution in liters

First, we need to calculate the amount of KCI in moles:

Mass of KCI = 101.00 g

Molar mass of KCI = 39 + 35.5 = 74.5 g/mol

Number of moles of KCI = mass / molar mass = 101.00 g / 74.5 g/mol = 1.357 mol

Next, we need to convert the volume of the solution to liters:

Volume of solution = 250.0 mL = 0.250 L

Finally, we can calculate the molarity:

Molarity = 1.357 mol / 0.250 L = 5.428 M

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Answer:

A. The largest value is 7 and the smallest value is 1. Find the difference. 7 - 1 = 6.

Explanation: