Why are both absolute dating and relative dating used to determine the age of fossils?

The most appropriate word to complete the sentence is: stay the same.

The complete sentence is then written as: "The electrical conductivity of a sample will stay the same when the size of the sample increases."

Conduction refers to the transfer of thermal energy or electric charge as a result of the movement of particles through a conductor such as a metal.  

Generally, when conduction relates to electric charge (current), it is referred to as electrical conduction.

Hence, electrical conductivity is a measure of the ability of a material or metal to conduct electricity by allowing the flow of electrons and current.

In Science, there are three (3) main factors that affect the electrical conductivity of a material and these include;

However, the size of a material does not affect its ability to conduct electricity.

In conclusion, the electrical conductivity of a sample will stay the same when the size of the sample increases.

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The Lanthanide series belongs to the f-block of the periodic table, while the Actinide series belongs below the Lanthanide series in the f-block.

The Lanthanide series belongs to the f-block of the periodic table and is located below the main body of the periodic table. It consists of the 15 elements from lanthanum (atomic number 57) to lutetium (atomic number 71). The Lanthanide series is also known as the rare earth elements.

The Actinide series, on the other hand, belongs to the f-block of the periodic table and is located below the Lanthanide series. It consists of the 15 elements from actinium (atomic number 89) to lawrencium (atomic number 103). The Actinide series is also known as the actinides.

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Newton's third law of motion declares that forces always come in action-reaction pairs; every action force has an equal and opposite reaction force. This principle explains the motion and equilibrium in every interaction between two objects, highlighting the intrinsic symmetry of forces in nature.

Newton's third law of motion is a fundamental principle that provides insight into the interactions between two objects. The law states that for every action, or force, exerted by one object onto another, there is an equal and opposite reaction force. This means that whenever one body applies a force onto a second body, the first body will experience a force that is equal in magnitude but opposite in direction. This reciprocal action is what maintains the balance of forces in the universe.

For example, if you were to push against a wall, the wall pushes back against you with an equal force in the opposite direction. This is why you do not move the wall, and you feel the force of your own push being reflected back onto you. Another classic illustration is when two ice skaters push off against each other; both move in opposite directions due to the equal but opposing forces exerted.

In any interaction, no force exists alone; there are always action-reaction pairs. These forces are part of the same interaction and cannot be separated, reflecting a basic symmetry in nature. Newton's third law reveals the connectedness of forces and ensures that there is a constant state of motion or equilibrium in a system as long as external forces are balanced.

Answer:

in 79.85 g of Fe2O3 there will be 0.5 moles of Fe2O3

Explanation:

To find the number of moles we must calculate the molecular weight of iron oxide, for that we use the periodic table:

mFe = 55.845 g/mol

mO = 15.999 g/mol

mFe2O3 = (2x55.845) + (3x15.999) = 159.687 g/mol

1 mole of iron oxide weighs 159.687 g, therefore, to calculate the number of moles present in 79.85 g it will be equal to:

nFe2O3 = 79.85/159.687 = 0.5 moles

Answer : The correct options is, (C) Orange juice, yogurt.

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion, [tex]H^+[/tex].

The properties of an acid are :

Base : It is a substance that has ability of donating hydroxide ion, [tex]OH^-[/tex].

The properties of an base are :

As we know that,

Antacid : It is a base that is used for the neutralization of stomach acidity. So, it is bitter in taste.

Orange juice : It is an acid in which citrus acid present in it. So, it is sour in taste.

Toothpaste : It is a base that is used for cleaning teeth. So, it is bitter in taste.

Yogurt : It is an acid in which lactic acid present in it. So, it is sour in taste.

Hence, the substance likely to have a sour taste are orange juice, yogurt.

The answer is (D) Solid Metal      

Water's composition remains as H2O across all states—solid (ice), liquid (water), and gas (steam)—while the arrangement and kinetic energy of the molecules change, affecting the density and physical properties of water.

Understanding Water's States of Matter

Water can exist in solid, liquid, and gas states; namely ice, liquid water, and steam, respectively. The composition of water does not change across these states; it is always H2O, with two hydrogen atoms bonded to one oxygen atom. However, what changes during a change of state is primarily the amount of kinetic energy of the water molecules, which affects their movement and arrangement.

As water moves from solid to liquid, the molecules gain kinetic energy and start to move more freely, allowing the water to take the shape of its container. As a liquid transforms into a gas, the molecules gain even more kinetic energy, move faster, overcome attractive forces, and spread out to fill the entire volume of the container. The changes in states of matter are physical changes and do not affect the chemical makeup of water molecules.

The density of water also changes with the state it is in. The density is highest in the liquid state and decreases when water is in the form of its solid state, ice. This is due to the molecular arrangement in ice that creates a crystalline structure with more space between the molecules. Conversely, water vapor has the least density as the molecules are spread out the most.

Answer are B,D, and E

Answer:

All of the above i think sorry if im wrong

Explanation:

Anton van Leeuwenhoek discovered tiny, single-celled organisms known as animalcules, now identified as bacteria, by examining dental plaque under his homemade powerful simple microscope.

Anton van Leeuwenhoek, often referred to as the Father of Microbiology, made groundbreaking discoveries using a microscope he crafted himself. One of his most notable findings was when he examined the plaque from his own teeth. What he saw were tiny living organisms with a single cell, which he termed animalcules, now known as bacteria. His simple microscopes, through his superior lens-making skill, were almost as powerful as modern light microscopes. Leeuwenhoek's microscopes provided better resolution than other microscopes of his time, enabling him to observe human cells and bacteria closely. The discovery of these microorganisms laid the foundations of microbiology, a field that has evolved significantly since his time.

Anton van Leeuwenhoek discovered bacteria, which he called animalcules, with self-made microscopes almost as powerful as modern ones, marking a seminal event in microbiology.

When Anton van Leeuwenhoek examined the plaque from his teeth under his homemade microscope, he discovered tiny living entities, which he named animalcules ("tiny animals"). These observed organisms are what we today refer to as bacteria

Leeuwenhoek's skill in crafting lenses led to the creation of a microscope that was nearly as powerful as our modern light microscopes, enabling him to be the first person to observe human cells and bacteria. His work marked a significant leap in the field of microbiology, confirming the existence of microscopic life which was previously only speculated.

On cold winter nights, a mother places a portable heater in her toddler's bedroom. The heater does not have a fan to blow hot air, it only has simple metal coils that get very hot.  Therefore, option C is correct.

Metal coil is created by winding or coiling a finished steel product, such as a sheet or strip, after it has been rolled. The width of the steel coil is substantially greater than the thickness. Steel coils can be categorized as Hot Rolled, Cold Rolled, or Galvanized, depending on the production process.

Depending on the industry, different uses for steel coil can be found, but some of the more common and well-known ones are pipe manufacture, structural steel components, electronic components, consumer goods, automobile parts, and many more.

In the ignition system of a vehicle, the metal coil is an induction coil that converts the battery's voltage to the thousands of volts required to produce an electric spark in the spark plugs that ignites the fuel.

Thus, option C is correct.

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The products H₂O and CO₂ from the decomposition of H₂CO₃ contain a total of 3 oxygen atoms, with one from the water and two from the carbon dioxide.

The question How many oxygen atoms are in the product H₂CO₃ H₂O+CO₂is a chemistry problem that involves counting the number of oxygen atoms in the products of a chemical reaction. The compound H₂CO₃ decomposes into H₂O (water) and CO₂ (carbon dioxide). To determine the number of oxygen atoms, we look at the products H₂O and CO₂. Water has one oxygen atom, and carbon dioxide has two oxygen atoms. Therefore, each molecule of H₂O has one oxygen, and each molecule of CO₂ has two oxygens.

We sum the number of oxygen atoms from both products: 1 oxygen from H₂O and 2 oxygens from CO₂, giving us a total of 3 oxygen atoms in the products of the reaction.

Aquatic systems are characterized by abiotic factors, biodiversity, and water quality/chemistry. Each of these factors impacts the types of organisms that can survive in the environment and overall health of the system.

Aquatic systems are characterized by three principal factors: abiotic factors, biodiversity, and water quality/chemistry.

Abiotic factors refer to the nonliving elements like sunlight, temperature, and salinity that directly affect the organisms living in these ecosystems. For example, in warmer temperatures, the water can hold less dissolved oxygen which can limit the types of species that can survive.

Biodiversity pertains to the variety of life forms present in the aquatic environment. It can range from microscopic organisms like phytoplankton to large mammals such as whales. The level of biodiversity often provides a measure of the health of the system.

Water quality/chemistry is extremely important in determining the types of organisms that can live in an aquatic habitat. Factors such as pH level, the amount of dissolved oxygen, nutrient content, and presence of pollutants all play an essential role.

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Rocks are made up of minerals. The hardest mineral is diamond. The softest mineral is talc, which is ground up to make talcum powder.

The correct chronological order for the discoveries by the scientists are  Dalton, Thompson, Rutherford, Bohr. Therefore, option B is correct.

The act of discovering something, whether it be data, a location, or an item, particularly when doing so for the first time: the discovery of electricity.

Leonardo was a prolific scientist. a travel or exploration voyage. An investigation into a murder was opened when a corpse was found in the brush.

While Discovery aids in identifying the adjustments and enhancements that are required, it also aids in streamlining and ranking those changes, helping you choose which requests are most crucial and how to accommodate everyone's requirements.

In order to make a discovery, one must present observational data and make an effort to form a preliminary knowledge of a phenomenon.

Thus, option B is correct.

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C and D structures function mainly in transport. Hence, option D is correct.

The membrane structures that function in active transport eg. integral proteins.

A major role of the plasma membrane is transporting substances into and out of the cell.

The plasma membrane is selectively permeable, allowing only certain substances to pass through.

Proteins embedded within the plasma membrane helps to move hydrophilic, polar molecules into the cell.

Hence, option D is correct.

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            Potassium has the largest atomic radius.

                        Using periodic table trends one can easily compare the atomic radii of elements. The trends in atomic radii are as follow,

Trends in Groups:

                             Moving from top to bottom along the groups the atomic radii increases because as you move from top to bottom the number of shells increases hence, the distance of valence electrons from nucleus also increases and therefore, atomic radius increases.

Trends is Periods:

                             Moving from left to right along the periods the atomic radii decreases. This is because the number of protons and electrons increases but the the valence shell remain the same hence, causing more nuclear charge and more attraction between the valence electrons and nucleus.

           Potassium, Calcium, Cobalt and Nickle all are present in same period. Potassium present at the extreme left will have greater atomic radii of 0.227 nm while Co and Ni at the middle of period will have atomic radii of 0.125 nm each. While, the atomic radius of Calcium next to K is 0.197 nm.

Potassium has the largest atomic radius because the atomic radius generally increases as you move down on the periodic table, and Potassium is highest in the given options.

The atomic radius generally increases as you move down a group in the periodic table because as you go down a group, an additional electron shell is added, increasing the distance between the nucleus and the outermost electron shell. Of the elements listed: Potassium, Calcium, Cobalt and Nickel, Potassium is highest in Group 1 (also known as Alkali metals), and thus it has the largest atomic radius.

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Answer:

True

Explanation:

Valence electron:

No. of electrons present in the outermost shell of any atom is called valence electrons. Valence electrons determines the chemical properties of element.

Atomic no. of S = 16

Electronic configuration of S = [tex]1s^22s^22p^63s^23p^4[/tex]

Energy shell (n = 3) is the outermost shell

Valence electrons = 6

Atomic no. of Cl = 17

Electronic configuration of S = [tex]1s^22s^22p^63s^23p^5[/tex]

Energy shell (n = 3) is the outermost shell

Valence electrons = 7

So, sulfur has 6 valence electrons and Cl has 7 valence electrons.

The statement 'Sulfur has fewer valence electrons than chlorine.' is true.

Answer:

CH4 + 2O2 → CO2 + 2H2O

ch4 +202-->co2+2h20

Steps in Balancing a Chemical Equation

Count each type of atom in reactants and products. ...

Place coefficients, as needed, in front of the symbols or formulas to increase the number of atoms or molecules of the substances. ...

Repeat steps 1 and 2 until the equation is balanced.

Steps in Balancing a Chemical Equation

Count each type of atom in reactants and products. ...

Place coefficients, as needed, in front of the symbols or formulas to increase the number of atoms or molecules of the substances. ...

Repeat steps 1 and 2 until the equation is balanced.

Answer: Two different ways carbon can get from shells to the environment is through limestone, lithosphere, spring of gushing lava, + barometrical CO2. The subsequent method to arrive would be through the maritime CO2, marine creatures + plants, silt, flammable gas, power plants, and afterward environmental CO2.

Explanation:

The excretory system removes waste from the body.

It includes several organs such as the kidneys, large intestine, liver, skin, and lungs. These organs work together to filter out harmful metabolic waste products and excess water from the blood, ensuring that waste does not build up to harmful levels and maintaining the body's homeostasis.

Functions of the Excretory System:

Answer: There would be no more coal left to use.

Explanation:

nonrenewable resources are rare and not so easily to be replaced