24g of magnesium reacts with 38 g of fluoride o produce __ g magnesium fluoride

The water plays role in B) dissociation of ionic compounds.

The presence of positively charged end and negatively charged end in the molecule is referred as polarity. Increasingly significant, the extremity of water is in charge of successfully dissolving other polar particles, for example, sugars and ionic mixes, for example, salt. Ionic mixes break down in water to shape particles. This is critical to recall in light of the fact that for most natural responses to happen, the reactants must be disintegrated in water.  

Since water can break down such huge numbers of basic substances, it is known as the all-inclusive dissolvable. Substances that can't be broken down by water, (for example, oils) are called fat dissolvable and are nonpolar, non-ionic exacerbates that are firmly covalently reinforced.  

D) Water dissolves nonpolar covalent substances. Due to its curved form and an uneven distribution of oxygen and hydrogen atoms' electrons, water is a polar molecule. Because of this, it makes a great solvent for polar and ionic chemicals. Water is not a good solvent for nonpolar covalent compounds, though.

Because they lack stable electric dipoles, nonpolar covalent compounds like hydrocarbons (such as oil, gasoline) and certain gases (such as methane, oxygen) do not interact with water strongly. They do not dissolve well in water because they have a tendency to resist water molecules. Because oil is nonpolar and does not dissolve in the polar water, oil and water do not combine.

Therefore, the notion that water dissolves polar and ionic molecules but ineffectively dissolves nonpolar covalent chemicals is most likely accurate. The right response is D.

To know more about nonpolar:

https://brainly.com/question/12835780

#SPJ6

Answer:

burning gasoline

Explanation:

The test for carbon dioxide involves passing the gas through lime water. If the lime water turns milky, this indicates the presence of carbon dioxide. If more CO2 is passed through the milky lime water, it becomes clear again.

You can test for the presence of carbon dioxide using a simple chemical reaction involving lime water (calcium hydroxide solution). This test is based on the fact that when carbon dioxide gas is passed into lime water, the lime water turns milky. This is because carbon dioxide reacts with the calcium hydroxide to produce calcium carbonate, which is insoluble in water and appears as a white precipitate, causing the milky appearance.

Step-by-step explanation of the test:

Note: If more carbon dioxide is passed through the milky lime water, it becomes clear again as the calcium carbonate further reacts with carbon dioxide and water to form calcium hydrogencarbonate, which is soluble in water.

https://brainly.com/question/33591670

#SPJ3

Beryllium (Be) is similar to calcium (Ca) because both are somewhat reactive metals at standard temperature and pressure. Hence, option C is correct.

The alkaline earth metals are six chemical elements in group 2 of the periodic table.

They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

The second column on the periodic table of the chemical elements is collectively called the alkaline earth metal group: beryllium, magnesium, calcium, strontium, barium, and radium.

Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties.

Beryllium (Be) is similar to calcium (Ca) because both are somewhat reactive metals at standard temperature and pressure.

Hence, option C is correct.

Learn more about the alkaline earth metal here:

https://brainly.com/question/12835232

#SPJ2

Answer: There must be the same number of atoms of each element on both sides of the equation.

Explanation: This is the only way the equations will be balanced. Adding the coefficients to see if they are equal will not guarantee that the equations are balanced becuase coefficients can be turned into subscripts.

Answer:

The correct answer is D :Linear

Explanation:

Talking about molecular geometry and arrangement of atoms, liner geometry and trigonal bipyramidal arrangement of atoms would have 3 lone pairs and 2 no. of bond pairs.

For example, in ICl2 and XeF2, the central molecule has 3 lone pairs, and it shows sp3d hybridization.

In trigonal bipyramidal arrangement, orbitals have trigonal bipyramidal structure. It has three-atom molecules which have a linear shape and the orbitals on the equator contain three lone pairs each.

Answer:

linear

Explanation:

a p e x

Answer:

1/1840 the mass of a C-12 atom

Choice C is correct

Explanation:

The relative mass of an electron is 1/1840 the mass of a C-12 atom . Atomic mass units are expressed relatively to the atomic mass unit of an unbound neutral carbon-12 atom.

d) 1/1840 of hydrogen atom mass is the relative electron mass.

The hydrogen gas is the lightest element and its atomic mass is [tex]\bold{1.67 \times 10^{-27} \ kg}[/tex], same as the mass of proton because it has no neutron and contains one proton and one electron in its atom. But it loses an electron to gain stable electronic configuration leaving only a proton in its atomic structure.

We know, Mass of an electron = [tex]9.11 \times 10^{-31} \ kg[/tex]

[tex]\text{Relative mass of electron} = \frac{\text{Mass of proton}}{\text{Mass of electron}}[/tex]

Relative mass of electron = [tex]\frac{1}{1840}[/tex] the mass of proton

Relative mass of electron = [tex]\frac{1}{1840}[/tex] the mass of hydrogen atom.

Answer:

An alloy is a mixture of two or more metals

Explanation:

Answer:

determining how many ozone molecules are lost in the atmosphere

The mole concept can be used to determine the number of ozone molecules are lost in the atmosphere.

The mole concept was introduced by Avogadro. The mole is the SI unit of amount of substance. According to Avogadro, one mole of a substance contains 6.02 × 10^23 atoms, ions, molecules etc. The mole concept is important in many chemical calculations. The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample.

To learn more about mole,refer here :

https://brainly.com/question/25263041

#SPJ2

To calculate the molarity of the diluted H₂SO₄ solution, first find the mass of H₂SO₄ in the initial solution. Convert this mass to moles and divide by the final volume in liters. The resulting molarity is 1.194 M.

To find the molarity of the diluted sulfuric acid solution, follow these steps:

Calculate the mass of H₂SO₄ in the initial solution:
A 40% H₂SO₄ solution means there are 40 grams of H₂SO₄ in every 100 grams of solution. The density of the stock solution is 1.17 g/mL, so 250 mL of stock solution weighs :

250 mL × 1.17 g/mL = 292.5 g.
Mass of H₂SO₄: 40% of 292.5 g = 0.40 × 292.5 g = 117 g H2SO4.

Calculate the moles of H₂SO₄:
Molecular weight of H₂SO₄ (H: 1 g/mol, S: 32 g/mol, O: 16 g/mol) = 2(1) + 32 + 4(16) = 2 + 32 + 64 = 98 g/mol.
Moles of H₂SO₄

= 117 g ÷ 98 g/mol

= 1.194 moles of H₂SO₄.

Determine the volume of the final solution in liters:
The final volume is given as 1 liter.

Calculate the molarity:
Molarity (M)

= moles of solute ÷ liters of solution

= 1.194 moles ÷ 1 liter

= 1.194 M.

Therefore, the molarity of the diluted H₂SO₄ solution is 1.194 M.

A substance that will change its shape to fit its container, but has a definite volume, is in a liquid state of matter.

There are four (confirmed) states of matter, Solids, Liquids, Gasses, and Plasma. Solids, have definite shape and volume. Metalloids is a solid that does not have a definite shape, but does have an 'original' shape, the shape the metalloid was originally in. Liquids although have no original shape, although is does have a definite volume, which is how much space it takes up. Liquids will change to fit the shape of its container, so no matter what you put a liquid in, it will fit its container in some way or form. Water for example, being a liquid at room temperature, when pouring water into a bottle, you see it take the shape of the container, as supposed to. Gasses and Plasmas are a bit more complicated, so you could look those up if you'd like. I hope this helps you.

Answer:

Plasma

Explanation:

Answer:

D. Freezing

Explanation:

Please mark brainliest and have a great day!

Answer:

A. Melting

Explanation:

In the above question we noticed that there is a passage from a regular and well compacted carbon dioxide molecules to molecules in a less compact and lower density pattern after a period of heating. According to this description we can conclude that a physical process called "Melting" occurred, which is the process, where a solid substance (which has very compacted molecules) when heated becomes a liquid substance, with less compacted molecules and lower density.

Melting explains the changeover from heating to solid state to liquid state. Heating causes the temperature of the substance to rise to its melting point. The temperature does not rise while fusion is taking place, that is, only after all the substance has gone into liquid state does the temperature rise again.

The melting point of a substance is the temperature at which that substance changes from solid to liquid state.

Answer:

1 gram I think it is right

Ice has a lower density than liquid water because hydrogen bonding causes water to crystallize with more empty space between molecules than in the liquid state.

Hydrogen bonding is a strong intermolecular force that occurs when hydrogen atoms are covalently bonded to highly electronegative atoms (e.g., nitrogen, oxygen, or fluorine). These hydrogen bonds result in attractive forces between neighboring molecules, contributing to unique properties like high boiling points in substances such as water and the stability of biomolecules like DNA and proteins.

Hydrogen bonding causes water to crystallize with more empty space between molecules than in the liquid state. This is because ice has a unique crystal structure known as a hexagonal lattice, in which water molecules form open spaces or voids between them. The hydrogen bonds in ice are more stable and rigid, allowing the water molecules to arrange themselves in a way that maximizes the empty space between them.

https://brainly.com/question/33443622

#SPJ6

Ice has a lower density than liquid water because when water freezes, the water molecules form a crystal lattice structure due to hydrogen bonding. This structure creates more space between the molecules and thus a lower density.

The best description for why ice has a lower density than liquid water is Choice A: Hydrogen bonding causes water to crystallize with more empty space between molecules than in the liquid state.

When water freezes into ice, the water molecules form a crystal lattice due to hydrogen bonding. This lattice structure has more space between the water molecules compared to when water is in its liquid state, resulting in a lower density of ice than liquid water.

https://brainly.com/question/11696500

#SPJ6

Answer:

A. The reactants absorb heat because they have less energy than the products.

Explanation:

According to the law of conservation of energy, energy can neither be created nor destroyed.  

The given equation of the chemical reaction indicates that the reaction is endothermic as heat is absorbed by the reactants. In an exothermic reaction heat is released by the products.  

In an endothermic reaction initially the heat of the reactants in less than the products, thus according to the law of conservation of energy, the reactants absorb heat such that there is equal amount of heat on both the reactant and product side.  

Answer:

Slope upward

Explanation:

The amount of carbon dioxide increases daily due to the increased use of petroleum fuels in diesel engines in the industries and by motor car users. The number of petroleum cars increases as their affordability increases. Use of LPG as domestic fuel has increased. These practices increase the amount of carbon dioxide in the atmosphere.

The rate of CO₂ production increases as these activities increases daily.  

hii mate

YOUR ANSWER IS 5.PRESSURE RELEASE IS CAUSE OF MECHANICAL WEATHERING

Answer:

The answer is plant growth, animal actions, and pressure release.

Explanation:

I’m my lecture, it gave me a list of mechanical and weathering stuff so, you know it is right. :) hope this helped

Answer:

40.0%.

Explanation:

∴ The percent by mass of carbon in glucose = [(The atomic mass of C in glucose)/(The molar mass of glucose)] x 100 = [(72.0 g/mol)/(180 g/mol)] x 100 = 40.0%.

Answer:

40% (a)

Explanation:

Option A- 40%, got it right on edge 2020

Answer:

The top curve/graph is exponential growth. All exponential growth graphs  look like a J in a way! Hope that helped

The first curve is an example of a curve that exhibits exponential growth.

An exponential growth can be defined as a situation in which the population size of a species of organism grows faster and quickly as the population gets larger.

This ultimately implies that, an exponential growth generally result in a population explosion over a period of time.

In conclusion, the curve of an exponential growth typically has a J-like shape and slopes upward as it continues to increase.

Read more on exponential growth here: https://brainly.com/question/9479649

Answer:

different

Explanation:

physical properties are the measure the melting point boiling point and freezing point and much more

Answer:

different

Explanation:

Take for example the colligative properties: freezing point depression and boiling point elevation. As their name indicates one measure the decrease of the freezing point and the other one the increment of the boiling point, of a solvent on the addition of a non-volatile solute. So, neither the physical properties of the solvent nor the solute is equal to the physical properties of the solution they made.

Answer:

The average atomic mass is 24.30 amu.

Explanation:

When there are at least 2 isotopes for an atom, each with its own atomic mass, we can calculate an average atomic mass (AAM), which considers the mass of each isotope and its relative abundance. The mathematical expression is:

[tex]AAM=\frac{\Sigma m_{i} \times ab_{i}  }{\%100}[/tex]

where,

AAM is the average atomic mass

mi is the mass of each isotope

abi is the relative abundance of each isotope

If we replace this expression with the data we have, then:

[tex]AAM=\frac{23.9850amu \times 78.99 \% + 24.9858amu \times 10.00\% + 25.9826amu \times 11.01 \%}{100\%} =24.30amu[/tex]

Answer:

more, negative

Explanation:

It will become more stable by combining the negative electrons.

The atom fluorine generally will become highly stable through the formation of an ionic chemical compound by accepting one electron from another atom. This process will fill its outer energy level of electrons.

Atomic number of fluorine is 9. The electronic configuration of fluorine is 2,7. Fluorine has 7 electrons in the valence shell, so it requires one electron to attain the noble gas configuration, which is highly stable.  

Thus, we can conclude that through the formation of ionic chemical bonds fluorine become highly stable, by accepting one electron from another atom.  

Learn more about fluorine here:

https://brainly.in/question/825790

Answer:

It gains electrons, reducing its overall charge

Explanation:

When an ion of element gains electrons its overall charge decreases, thus the it reduced.

Consider the half equation involving Iron (III) ions.

Fe³⁺+ e⁻ → Fe²⁺

In this equation, the iron III ion has gained an electron changing then to iron II ions. The charge has thus decreased from 3+ to 2+.

This is a reduction reaction.

Answer:

It gains electrons, reducing its overall charge

Explanation:

Answer:

=21 neutrons

Explanation:

The atomic mass of an atom is the total sum of the contents of the nucleus (protons and neutrons).

Thus atomic mass = no. of neutrons + no. of protons

Number of protons= The atomic mass-number of protons

= 34 - 13= 21

Answer:

1) The mass of the produced salt (CuCl₂) = 13.45 g.

2) The mass of the produced water (H₂O) = 1.8 g.

Explanation:

CuO + 2HCl → CuCl₂ + H₂O,

It is clear that 1 mol of CuO reacts with 2 mol of HCl to produce 1 mol of CuCl₂ and 1 mol of H₂O.

no. of moles of CuO = mass/molar mass = (8.0 g)/(79.545 g/mol) = 0.1 mol.

no. of moles of HCl = mass/molar mass = (125.0 g)/(36.46 g/mol) = 3.43 mol.

∴ 0.1 mol of CuO "limiting reactant" reacts with 0.2 mol of HCl "excess reactant".

1 mol of CuO produces → 1 mol of CuCl₂, from stichiometry.

∴ 0.1 mol of CuO produces → 0.1 mol of CuCl₂.

∴ The mass of the produced salt (CuCl₂) = (no. of moles)(molar mass) = (0.1 mol)(134.45 g/mol) = 13.45 g.

1 mol of CuO produces → 1 mol of H₂O, from stichiometry.

∴ 0.1 mol of CuO produces → 0.1 mol of H₂O.

∴ The mass of the produced water (H₂O) = (no. of moles)(molar mass) = (0.1 mol)(18.0 g/mol) = 1.8 g.

Answer:

Table salt dissolving in water

Explanation:

NaCl(s) ⟶ Na⁺(aq) + Cl⁻(aq)

Sodium chloride is an ionic solid. When it goes into solution, the ions separate from the surface of the solid. The process is called dissociation.

A is wrong. In the solution process, the molecules simply separate from the surface of the crystal.

C is wrong. When HCl dissolves in water, it forms hydronium and chloride ions. The dissolution of covalent compounds in water to produce ions is called ionization.

D is wrong. Vegetable oil does not dissolve in water.

Answer:

See explanation ...

Explanation:

Actually, two of the listed statements are correct with respect to the Bohr Model of the atom. Orbitals are defined by specific energy levels relative to the nucleus of the atom that it is associated and electrons can exist in any energy level.

That is, the bases of the Bohr (Concentric Ring) Model of the atom is found in the study of bright line emission spectra of atoms (hydrogen to be specific) in that the bright lines of the spectrum generated are caused by electrons transitioning from higher energy level orbitals to lower energy level orbitals releasing 'discrete' amounts of energy in the form of electromagnetic radiation. The potential energy content of an electron while in a specified energy level (As described by Neils Bohr et.al.) is given by the expression Eₙ = -A/n²; A = 2.18 x 10⁻¹⁸ joules.  When applied to electron transitions, say from the n = 3 level to the n = 2 level, the energy emitted (ΔE₃→₂ = -2.18 x 10⁻¹⁸J(1/2² - 1/3²) = -2.03 x 10⁻¹⁹j. This is the energy carried by a photon having a wavelength of 656.1-nm and can be seen as a red-light band in the bright line spectrum of the Hydrogen atom.

Answer:

Ignore the other answer The answer is B

Explanation:

Answer:

meteorite or comet impact

Explanation:

The Cretaceous-Tertiary extinction is not the most devastating one that happened, but because of the organisms that got extinct are very well known and famous, it too became the most famous extinction. The reason for the extinction was an impact of a meteorite or comet where Yucatan is located in the present. The impact was so strong that the energy released from it wiped out everything in the surrounding area. But that was not all, as this impact also caused large scale wildfires, activated most of the volcanoes on the planet, triggered enormous tsunami, and a very hot air mass circled the whole planet and fried everything that was not sheltered. The dust, ashes, and other particles released into the atmosphere blocked the sun for a long period of time. the end result was the extinction of lot of animals and plants, most noticeably the dinosaurs.

Question

what is a molecular Solid

Answer:

A molecular solid is a type of solid in which molecules are held together by van der Waals forces rather than by ionic or covalent bonds.

Explanation:

A molecular solid is a solid consisting of discrete molecules. The cohesive forces that bind the molecules together are van der Waals forces, dipole-dipole interactions.

Molecular solids may be defined as compounds that are composed of distinct molecules which are held together by relatively weak interactions such as van der wall forces, dipole interaction, pie-pie interactions, etc.

Solids may ve defined as those substances of matter that maintain their shape and density when not encompassed. They possess hardness.

Molecular solids have low melting and boiling points due to the presence of relatively weak interaction which easily shatters at very optimum temperature.

Therefore, it is well described above.

To learn more about Molecular solids, refer to the link:

https://brainly.com/question/14313365

#SPJ2

Answer & Explanation:

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O,

It is clear that every 1.0 mol of H₂SO₄ needs 2 mol of NaOH to be neutralized completely.

So, when you mix one mole of sulfuric acid with 1 mole of sodium hydroxide, there will be an excess of sulfuric acid.

Thus, the pH of the solution remain below 7.