What I said the molarity of an hcl solution if 24.0 ml is completely neutralized by 98.0 ml of 0.250m ca(oh)2

The valence electrons are transferred from the potassium atom to the fluorine atom, resulting in the formation of an ionic bond in potassium fluoride (KF), with potassium becoming a cation and fluorine becoming an anion.

When one atom of potassium (K) combines with one atom of fluorine (F), an ionic bond forms, resulting in potassium fluoride (KF). In this process, the valence electrons are not shared equally between K and F, nor do they spend more time around the atom of K. Instead, the valence electrons are transferred from the potassium atom to the fluorine atom, due to the difference in electronegativity between the two elements. Potassium, which has just one electron in its valence shell, easily donates this electron, becoming a positively charged ion, or cation. Fluorine, which has seven electrons in its valence shell, gladly accepts this electron to complete its octet, becoming a negatively charged ion, or anion, as a result.

Because they move in a horizontal path

Answer:

No, because the different properties are physical while the chemical properties remain the same.

Explanation:

the answer is  1.24  mol Mg(OH)2

The required moles of Mg(OH)₂ that are needed to completely neutralize 2.48 mol of HNO₃ is 1.24 moles.

Stoichiometry of the reaction gives idea about the relative amount of moles of reactants and products present in the given chemical reaction.

Given chemical reaction is:

Mg(OH)₂ + 2HNO₃ → Mg(NO₃)₂ + 2H₂O

From the stoichiometry of the reaction, it is clear that:

2 moles of HNO₃ = reacts with 1 moles of Mg(OH)₂

2.48 moles of HNO₃ = reacts with (1/2)(2.48)=1.24 moles of Mg(OH)₂

Hence required moles of Mg(OH)₂ is 1.24mol.

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C3h8 an acid or base - no, it is neither acid nor base as propane does not give proton or hydroxide ions.

An acid

A base

Whereas, propane [tex]C_3H_8[/tex]  neither an acid nor a base as it does not give either hydrogen ion or hydroxide ion on dissociation.

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Sawdust burns more quickly than a block of wood because it has a higher surface area, which allows more oxygen to come into contact with the wood particles and accelerate the combustion reaction. Larger blocks have less surface area exposed to oxygen, so they burn more slowly. High surface area is also the reason why powdered substances, like flour in mills, can be hazardous.

The reason why sawdust burns more quickly than a block of wood of equal mass under the same conditions can be attributed to the difference in surface area. Sawdust consists of tiny particles, each with its own surface exposed to the oxygen in the air. This increased surface area allows for more oxygen molecules to come in contact with the wood particles simultaneously, thus speeding up the combustion reaction.

Larger pieces of wood, such as blocks, have a lower surface area relative to their mass because much of the wood's material is inside the block, where oxygen cannot easily reach. As a result, the reaction takes place more slowly. When more surface is exposed, as with sawdust, there is a greater likelihood for the wood particles to come in contact with the oxygen required for burning, leading to a faster reaction rate.

Examples of this can be seen when starting a fire; kindling with a high surface area is used to initiate the fire due to its ability to burn more rapidly. Additionally, this principle demonstrates why powdered substances can be more hazardous, as seen in the explosion risk in flour mills, where flour particles have a high surface area.

Answer:

A chemical change.

Explanation:

I just took the test and got it right.

Answer:

They have the same number of electron shells, and they transition from a metal to nonmetal to inert gas from left to right.

Answer: Option (B) is the correct answer.

Explanation:

Numbering of carbon atoms will be done in such a way that the methyl group [tex](CH_{3})[/tex] attached to the linear carbon chain will get least number.

Therefore, numbering will be done from left to right.

The given molecule shows that a methyl group is attached to the second carbon and rest there is a linear chain of four carbon atoms.

Thus, we can conclude that name of the given alkane is 2-methylbutane.

Answer:

2.48

Explanation:

Water has a high specific heat capacity, which means it requires a lot of energy to change its temperature due to the hydrogen bonding among its molecules. This makes it slow to heat up and cool down, which is used by warm-blooded animals and affects the temperature of land and sea.

Water absorbs and releases large amounts of heat before its temperature changes because water has a high specific heat capacity. This capacity is due to the extensive hydrogen bonding among water molecules. Specific heat is the amount of heat needed for one gram of a substance to absorb or lose to change its temperature by one degree Celsius. Water's amount is one calorie or 4.184 Joules. Therefore, it takes a long time for water to heat and cool compared to other substances like sand, which has a specific heat capacity approximately five times lower than that of water.

The high heat capacity of water also has practical applications, such as warm-blooded animals using water to regulate and disperse heat throughout their bodies, much like a car's cooling system. This property also explains why the land cools faster than the sea.

It explains why some physical phenomenon behaves as they do.

The answer is A. Hydrogen bond

Molecules that have nonpolar covalent bonds donot form hydrogen bonds. Strenght. Hydrogen bonds are classified as weak bonds because they are easily and rapidly formed and broken under normal biological conditions.

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-Bucky

In a financial plan, cash inflows represent the sources of revenue or capital coming into the business. This could be from sale of products or services, investment income, funds raised from investors or loans, or reinvested profits.

In a financial plan, cash inflows represent the sources of revenue earned by the business. Such cash inflows could be listed as follows:

Under cash flows, we focus primarily on the channels that bring cash into the organization.

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Answer : The correct option is, 4.81 g

Explanation : Given,

Mass of aluminium = 2.70 g

Molar mass of aluminium = 26.98 g/mole

Molar mass of sulfur = 32.07 g/mole

First we have to calculate the moles of aluminium.

[tex]\text{Moles of Al}=\frac{\text{Mass of Al}}{\text{Molar mass of Al}}=\frac{2.7g}{26.98g/mole}=0.1mole[/tex]

Now we have to calculate the moles of sulfur.

According to the question,

As, 2 moles of aluminium react with 3 moles of sulfur

So, 0.1 mole of aluminium react with [tex]\frac{3}{2}\times 0.1=0.15mole[/tex] of sulfur

Now we have to calculate the mass of sulfur.

[tex]\text{Mass of sulfur}=\text{Moles of sulfur}\times \text{Molar mass of sulfur}[/tex]

[tex]\text{Mass of sulfur}=0.15mole\times 32.07g/mole=4.81g[/tex]

Therefore, the mass of sulfur he take must be, 4.81 g

Answer:

sample response:  Prairie dogs create a safe home for their young by creating underground burrows, which protect them from hailstorms, blizzards, floods, droughts, and fires. The burrow contains many different chambers, including a nursery that is very deep underground. This protects the young from predators as well as changes in the temperature outside. The burrows even include observation posts where they can watch for predators.

Explanation:

Answer : The correct name for the compound [tex]MgBr_2[/tex] is, Magnesium bromide.

Explanation :

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

Ionic compound are usually formed when a metal reacts with a non-metal.

The rules for naming the ionic compounds is given as :

Hence, the correct name for the compound [tex]MgBr_2[/tex] is, Magnesium bromide.

The valence shell is the outermost electron shell in an atom and contains the valence electrons essential for chemical bonding and reactions.

The valence shell is the outermost shell of electrons in an atom. It contains the valence electrons, which are the electrons most likely to be involved in chemical reactions and bonding. For main group elements, the valence shell includes the highest n level s and p subshells.

In the case of transition metals, their valence shell comprises the highest energy s and d subshells, whereas for inner transition elements, the s, d, and f subshells are part of the valence shell. An atom is considered to be more stable and less reactive when its valence shell is full, because these valence electrons determine the chemical properties of an element and its potential to bond with others.

For example, sodium (Na) has a valence shell configuration of 3s¹, where the number 3 represents the highest-numbered shell and s defines the type of orbital occupied by the valence electron. In the periodic table, elements in the same group have the same valence shell electron configuration, which accounts for their similar chemical behaviors.

Answer:

1. Ernerst Rutherford =====> Discovery of Atomic Nucleus

2. James Chadwick =====> Discovery of Neutron

3. Henri Becquerel =====> Discovery of Radioactivity

4. J.J. Thomson =====> Discovery of Electron

Explanation:

Final answer:

The Law of Conservation of Energy highlights the transformation, not the depletion, of energy. In homes, heat transfers via conduction, convection, and radiation. Solar energy is advised for Energyville for its renewable qualities, while swapping to LED lights at home conserves energy.

Explanation:

The Law of Conservation of Energy teaches us that energy cannot be created or destroyed, only transformed from one form to another. This principle is fundamental in understanding how energy interacts and transforms in the universe.

Conduction: Heat moving through the walls of your house.

Convection: Warm air circulating inside a room.

Radiation: Heat from the sun warming your home's surfaces.

Renewable vs Nonrenewable Resources: Renewable resources, such as solar and wind, can be replenished over time and have lower environmental impacts, whereas nonrenewable resources, like coal and oil, are finite and typically more polluting.

For Energyville, I recommend solar energy as a renewable source due to its accessibility, decreasing cost, and low environmental impact compared to other energy sources.

One way to conserve energy at home is to replace incandescent bulbs with LED lights, which use less energy and last longer, significantly reducing energy consumption and costs.

Answer:

70%

Explanation:

105 divided by 150 equal to 0.7.  then u multiply 0.7 by 100. equal 70.  so its C because efficiency = (effective work)/(executed work) * 100%

hope it helped :3

Answer:

70%

Explanation:

105 divided by 150 equal to 0.7.  then u multiply 0.7 by 100. equal 70.  so its C because efficiency = (effective work)/(executed work) * 100%

Answer:

c

Explanation:

Answer:

Study of science benefits society in a various ways such as it help the society to improve the condition by creating awareness and knowledge, it also helps the society to meet the global challenges and provide improvement in the education field.

Explanation:

The study of science benefit society in a various ways

Off all the states of matter, only solids have a defined shape, due to stronger bonds between its molecules/atoms. Unlike solids, Liquids and gasses take the shape of whatever container they are placed into. This, again, is due to weaker linkages between the atoms/molecules of gasses and liquids.