Two states of matter are described below. State A: Cannot be compressed and retains its shape State B: Highly compressible Which combination of the state and a substance in that state is correct?

Answer:-

5 mol of Lead

3.01 x 10^24 atoms of Lead

Explanation:-

Mass of lead = 1.035 kg x 1000 = 1035 g

Atomic mass of Lead = 207.2 g mol-1

Number of moles of lead = Mass / atomic mass

= 1035 g / 207.2 g mol-1

=5 mol

By Avogadro's Law we know 1 mol of an element has 6.02 x 10^23 atoms

So 5 mol of Lead has 5 x 6.02 x 10^23

= 3.01 x 10^24 atoms of Lead

Answer:

The correct answer will be-repeat the data to verify and support the results.

Explanation:

The scientific theory is based on the repeated experiments which provide and support the theory.

If the data from the new experiment or any particular experiment does not support the theory then the step to be performed will be to repeat the experiment with the same protocol by different experimenters.

This repetition of the experiment increases the efficiency of the data and help determine whether the data can act as evidence of the theory or not.

Thus, repeat the data to verify and support the results is the correct answer.

The molecules of sugar will dissolves completely in water when the sugar cube is placed in it and it forms a homogeneous solution.

A solution is formed when a solute dissolves in a solvent. For example  salt when dissolved in water forms the salt solution. The solute can be partially or completely soluble in the solvent.

The solute if completely miscible in the solvent and no phase separation occurs there such as in salt solution, it is called homogenous solution.

Whereas, in some solutions, the solute only partially dissolves in the solvent and forms a phase separation from solvent. Suc solution are called heterogeneous solution.

The solubility of solute depends on the mass, bond type, temperature etc. Here, the sugar molecules are completely soluble in water. Water can forms hydrogen bonds with the OH groups of sugar molecules and it forms a homogeneous solution.

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Answer: Using fertilizer on crops to increase their yield

Explanation: Apex

Kaboom. an explosion, because since you lit the fuse, the sparks go off while the fuse get shorter and shorter and then when the use goes into the bomb itself, the Gunpowder Ignites really really fast causing pressure to become higher and higher causing the bomb itself to not contain it and so, it goes kaboom, and shrapnel, A bunch of small metal spikes, Go out in all directions.

So my answer is B: An Explosion. (You're welcome)

The answer is D: Cell wall, chloroplast

How do I know? I took the same test before

and it was Cell wall, chloroplast. Hope you get an A!

Answer:

The atomic number is the number of protons in the nucleus of an atom.

Explanation:

Atoms have 3 main subparticles: protons, neutrons and electrons. Protons have positive charge, neutrons don't have any charge, and electrons have negative charge. Both protons and neutrons are located in the nucleus while electrons move around the nucleus.

C. No heat will flow among the spoons

In a nuclear power plant, the heat from nuclear fission reactions converts water to steam, which then turns a turbine connected to a generator to produce electricity.

At a nuclear power plant, a controlled nuclear chain reaction takes place in the reactor core which releases a substantial amount of heat. This heat is utilized to convert water into steam. The high-pressure steam is then directed to drive a turbine, which, in turn, spins and activates a generator.

The generator is a crucial component as it is responsible for transforming the kinetic energy generated by the turning turbine into electrical energy which we use as electricity. Therefore, a nuclear chain reaction releases heat, which in turn generates steam driving a turbine that is ultimately connected to a generator for electricity production.

Final answer:

The limited number of compounds formed by elements is determined by their atomic structure, stability preferences, and the octet rule governing valence electrons, along with the fixed number of known elements (approximately 118). These factors lead to a finite, yet extensive, number of chemical bonds and stable compounds. The periodic table's organization reflects these bonding possibilities and limitations.

Explanation:

Why There is a Limited Number of Compounds

The reason there is a limited number of compounds that can be formed by the elements in the periodic table is due to the fixed set of elemental combinations governed by their atomic structures and bonding capabilities. For instance, the noble gas elements, which have eight valence electrons except for helium, do not form compounds easily, indicating high stability with full outer shells. This observation leads to the octet rule, suggesting that compounds often form because atoms seek the stability of a full valence shell comprising eight electrons.

Furthermore, the periodic table showcases a finite number of elements, with only about 118 known to us, resulting in a finite, although vast, number of possible combinations and chemical bonds. These limits are inherent to the properties of electrons and their configurations in atoms. As chemists, we observe that certain combinations of atoms form stable compounds while others do not, influenced by the electronic arrangement, chemical reactivity, and periodic trends.

The structure of the periodic table itself, which arranges elements by increasing atomic number and distinct chemical properties such as metallicity, governs how and which elements can combine. Therefore, even with millions of known compounds resulting from the combination of these elements, the intrinsic properties of elements and the laws of chemistry dictate the limits to the variety and types of bonds that can form robust compounds.

The answer is c 5

Bahafbssna

STP, or standard temperature and pressure, is defined as 0°C (273.15 K) and 1 atm pressure, allowing for standardized comparison of gas properties.

The conditions represented by the abbreviation STP, which stands for standard temperature and pressure, are specifically chosen to provide a reference point for the comparison of the physical properties of gases. Generally, STP is defined as a temperature of 0°C or 273.15 K and a pressure of 1 atm (atmosphere).

However, it is important to note that there are slight variations in this definition, as some organizations like the International Union of Pure and Applied Chemistry (IUPAC) define STP as 0.986 atm, while for simplicity, others may use the rounded value of 1 atm. Despite this, the concept of STP is invaluable for scientists as it allows for standardized comparisons across various gas measurements.

The fossil record provides evidence of past life as well as clues to the past climate, environment, and abiotic factors in an area. This statement is true.

Abiotic elements, also known as abiotic factors, are non-living chemical and physical elements of the environment that have an impact on the health of living things and the operation of ecosystems. Biology as a whole is supported by abiotic causes and the phenomena that go along with them.

Abiotic variables including water, sunshine, oxygen, soil, and temperature are crucial.

Abiotic factors are non-living elements like water, soil, and atmosphere, whereas biotic factors are live entities found in an ecosystem including plants, animals, and bacteria. In an ecosystem, how these elements interact is crucial.

Thus, The fossil record provides evidence of past life as well as clues to the past climate, environment, and abiotic factors in an area. This statement is true.

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No, there is no way to predict the exact location of a marble drop due to various factors that influence its motion. However, we can make mathematical predictions and calculate the range of possible locations based on initial conditions and the laws of physics.

No, there is no way to predict the exact location of any one marble drop on the target. The reason for this is that the motion of a marble, or any object, is influenced by various factors such as air resistance, initial velocity, and the surface it is dropping on. These factors can introduce variability into the motion, making it difficult to predict the exact landing spot.

However, we can make mathematical predictions and calculate the range of possible locations for the marble to land based on the initial conditions and the laws of physics.

To better understand the motion of objects in free fall, you can perform the take-home experiment as suggested. By dropping a marble, a ball, a spoon, and a piece of paper from the same height, you can observe how the objects behave and make observations about their motion.

Its mn i just did the test 2.10 molecules for good

Answer:

decreased i think

Explanation:

Answer : [tex]Fe_2O_3[/tex] is the product.

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

The species present on the left side of the right arrow are known as reactant and the species present on the right side of the right arrow are known as product.

When iron react with oxygen to give iron(III) oxide as a product.

The balanced chemical reaction will be,

[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]

In this reaction, [tex]Fe[/tex] and [tex]O_2[/tex] are the reactants and [tex]Fe_2O_3[/tex] is the product.

Answer:

Within the atmosphere, as altitude increases,

A.air pressure stays the same.

B.air becomes heavier.

C.air pressure decreases.  The answer.

D.air pressure increases.

Explanation:

That's the question. AND Pressure with Height: pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. Hope that helps. This means the answer is C.

Final answer:

To find the number of moles of glucose from 8.3 x 10^21 molecules, divide by Avogadro's number (6.022 x 10^23), resulting in approximately 0.01378 moles of glucose.

Explanation:

To determine how many moles of glucose are contained in 8.3 x 1021 molecules of glucose, we must use Avogadro's number, which is 6.022 x 1023 molecules per mole. The calculation is as follows:

Number of moles = Number of molecules ÷ Avogadro's number

Number of moles = 8.3 x 1021 molecules ÷ 6.022 x 1023 molecules/mol

Number of moles ≈ 0.01378 moles

So, there are approximately 0.01378 moles of glucose in 8.3 x 1021 molecules of glucose.