Which monatomic ions would you expect potassium (Z=19) and oxygen (Z=8) to form?

Answer:

D. Liquid

Explanation:

It's mercury given the density and mercury's a metal that is liquid at room temperature

1) There are only single bonds between the carbon atoms, so the ending is 'ane'. Thus, the answer is 2-methylbutane.

2) There is one triple bond between one pair of carbon atoms, so the ending is 'yne'. So, the answer is 2-butyne.

3) There is one double bond between one pair of carbon atoms, so the ending is 'ene'. So, the answer is 2-butene.

Answer:

600

Explanation:

there's 1 mole in every nitroglycerin

I think

Answer:

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Ionic compounds conduct electricity in an aqueous solution and molten state but do not conduct electricity in a solid state.

Ionic compounds can be defined as crystalline solids generated by closely packed ions with opposite charges. An Ionic compound can be described as generally formed when one metal reacts with a non-metal.

In ionic compounds, the ions in the compound are usually held together by ionic bonds. The ions are produced by gaining or losing electrons in order to attain the nearest noble gas configuration.

In a reaction, the metals commonly lose electrons to achieve their complete octet while non-metals gain electrons to get a full octet.

In the solid state, Ionic compounds do not conduct electricity because ions are at fixed positions and do not move.

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Answer:

Explanation:

The shell number 3 can contain 9 (and more) electrons.

The shell number 2 can contain a maximum of 8 electrons.

There are 4 different types of orbitals: s, p, d and f. So, the maximum number of orbitals that a shell can con

Answer:

One atom of sulfur has a mass of 32.07 AMU; one mole of S atoms has a mass of 32.07 g.

Explanation:

Therefore, the answer should be 32.07 g

18 moles of oxygen can be produced by decomposing 12 moles of KClO₃.

The balanced chemical equation for the decomposition of KClO₃ is:

2KClO₃ → 2KCl + 3O₂

According to the equation, for every 2 moles of KClO₃ decomposed, 3 moles of O₂ are produced. So, to determine how many moles of O₂ are produced by decomposing 12 moles of KClO₃, we can use the following proportion:

2 moles KClO₃ / 3 moles O₂ = 12 moles KClO₃ / x moles O₂

where x is the number of moles of O₂ produced.

Solving for x, we get:

x = (3 moles O₂)(12 moles KClO₃) / (2 moles KClO₃)

x = 18 moles O₂

Therefore, 12 moles of KClO₃ can produce 18 moles of O₂.

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Answer:

1.) 2H2 + O2=2H2O

2.)Cl2 + 2KBr= 2KCl + Br2

4.)C4H12 + 7O2= 6H2O + 4 CO2

Analysing the question:

To calculate the density of a material, we need its mass and volume

We are given:

Mass of sample = 21 grams

dimensions of the sample = 1 * 1 * 2 = 2 cm³

Calculating the density:

Density = Mass of sample / volume of sample

Replacing the variables

Density = 21 / 2

Density  = 10.5 g / cm³

Determining the Material:

From the table provided, we can see that the density of Silver is 10.5 g/cm³

Therefore, the material is Silver

The plum-pudding model suggested a uniform distribution of electrons within a positively charged atom, whereas the Bohr atomic model introduced the concept of quantized energy levels and specific orbits for electrons.

The Bohr atomic model and the plum-pudding model are two distinct models that were proposed to explain the structure of atoms, and they differ in their fundamental concepts.

The plum-pudding model, also known as the Thomson model, was proposed by J.J. Thomson in 1904. According to this model, an atom consists of a positively charged sphere (the "pudding") with embedded negatively charged electrons (the "plums").

In other words, the electrons were thought to be uniformly distributed throughout the positively charged atom. This model suggested that the atom was overall neutral and did not contain any distinct substructures.

On the other hand, the Bohr atomic model, proposed by Niels Bohr in 1913, introduced the concept of quantized energy levels within an atom. According to this model, electrons orbit the nucleus in specific, discrete energy levels or shells.

These energy levels are represented by fixed orbits or paths, with electrons occupying only certain allowed orbits. The model also introduced the idea that electrons can transition between energy levels by emitting or absorbing energy in discrete packets called photons. This model explained phenomena like atomic spectra and the stability of atoms.

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Explanation:nthere is your work

Answer:

60.86 g of PH₃

Explanation:

We'll begin by calculating the number of mole of H₂ that will occupy 60 L. This can be obtained as follow:

22.4 L = 1 mole of H₂

Therefore,

60 L = 60 / 22.4

60 L = 2.68 mole of H₂.

Next, we shall determine the number of mole of PH₃ produced by the reaction of 60 L (i.e 2.68 mole) of H₂. This can be obtained as follow:

P₄ + 6H₂ –> 4PH₃

From the balanced equation above,

6 moles of H₂ reacted to produce 4 moles of PH₃.

Therefore, 2.68 moles of H₂ will react to to produce = (2.68 × 4)/6 = 1.79 moles of PH₃.

Finally, we shall determine the mass of 1.79 moles of PH₃. This can be obtained as follow:

Mole of PH₃ = 1.79 moles

Molar mass of PH₃ = 31 + (3×1)

= 31 + 3 = 34 g/mol

Mass of PH₃ =?

Mass = mole × molar mass

Mass of PH₃ = 1.79 × 34

Mass of PH₃ = 60.86 g

Thus, 60.86 g of PH₃ were obtained from the reaction.

Answer:

Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. For example, the pressure acting on a dam at the bottom of a reservoir is greater than the pressure acting near the top.

Explanation:

Answer:

hi

Explanation:

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Answer:

it's answer is lithium and boron.

Explanation:

The radial distribution function gives the probability density for an electron to be found anywhere on the surface of a sphere located a distance r from the proton. Since the area of a spherical surface is 4πr2, the radial distribution function is given by 4πr2R(r)∗R(r).

I

While the length is less than a double bond, the strength exceeds that of a double bond.

Due to the presence of two bonds rather than one, triple bonds are stronger than double bonds. An sp-sp sigma bond is created when one of each carbon atom's two sp hybrid orbitals intersects with the corresponding orbital from the other carbon atom.

Six electrons are shared by a sigma bond, two bonds, and a triple bond. Double bonds are more powerful than single bonds, and triple bonds are more powerful than double bonds, according to experiments.

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Answer: third

Explanation:

Answer:

Percentage of yield = 1%

Explanation:

Given:

Amount of yield = 5g

Total amount of product = 500 gram

Find:

Percentage of yield = ?

Computation:

⇒ Percentage of yield = [Amount of yield / Total amount of product]100

⇒ Percentage of yield = [5g / 500g]100

⇒ Percentage of yield = [0.01]100

⇒ Percentage of yield = 1%

Answer:

directly

Explanation:

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Answer:

32.5 moles of O2(g) are necessaries for a complete reaction

Explanation:

Based on the reaction of combustion of C4H10(g):

C4H10(g) + 13/2 O2(g) → 4CO2(g) + 5H2O(g)

1 mole of C4H10 needs 13/2 moles O2 for a complete reaction.

That means, the moles of O2 required for a reaction of 5.00 moles of C4H10 are:

5.00 moles C4H10 * (13/2mol O2 / 1mol C4H10) =

32.5 moles of O2(g) are necessaries for a complete reaction

Answer:

A. Equator

Explanation:

The equator is located in the centre of the Earth, dividing the northern and southern hemispheres.

Answer:

Equator because equator divides the earth into Northern and Southern hemisphere.

The piece of evidence that best identifies the type of reaction as nuclear or chemical is: Chemical, because a new substance is formed. Option 4

In this scenario, the observation that a new substance is formed is a key characteristic of a chemical reaction. Chemical reactions involve the rearrangement of atoms to form different substances with distinct properties. The formation of a new substance indicates a chemical change has occurred.

The other pieces of evidence listed do not necessarily point to a nuclear reaction:

Chemical, because energy is released during the reaction: Energy can be released in both nuclear and chemical reactions, so this observation alone is not sufficient to determine the type of reaction.

Nuclear, because energy is released during the reaction: While energy can be released in nuclear reactions, it is not exclusive to them. Chemical reactions can also release energy, such as in exothermic reactions.

Nuclear, because the mass decreased after the reaction: This observation suggests a change in mass, which could be indicative of a nuclear reaction. However, it is important to consider that chemical reactions can also involve changes in mass, such as the formation of gases or dissolution of a solid.

Overall, the most conclusive evidence to identify the type of reaction is the formation of a new substance, which aligns with a chemical reaction.

Option 4

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No, it's not possible.

Isotope means two atoms which have same proton number but varying neutron number. And we calculate mass as the summation of neutron & proton number. If the proton number varies, mass will also vary.