Construct an explanation using Newton's Laws of Motion to describe the effects of balanced and unbalanced forces
on the motion of an object.

Answer:

Please find attached the table of classification of the chemical compounds, created with Microsoft Word

Explanation:

The given compounds are;

H₂SO₃ is an acid which is known as sulfurous acid

When SO₂ is added to water, we have;

SO₂ + H₂O ⇄ HSO₃ + H⁺

Therefore, H₂SO₃ is ionic

2) HI which is known as hydrogen iodide, dissolves in water as follows

HI (g) + H₂O (l)  ⇄ H₃O⁺(aq) + I⁻(aq)

Therefore, HI is able to donate hydrogen ions therefore, it is both acidic and ionic

3) KI is a salt of the alkali metal, potassium, and iodine which is a group 7 element such that it formed by the transfer of electrons from potassium to iodine making it an ionic compound

KI forms a slightly alkaline solution

4) NaClO₃ comprises of the ionic combination of sodium and chlorate ions which dissolves in water as follows;

NaClO₃ → Na⁺(aq) + ClO₃⁻(aq)

Therefore, NaClO₃ is ionic

NaClO₃ is also a strong oxidizing agent, making a Br∅nsted acid

we have;  

Sulfurous acid (also Sulfuric(IV) acid, Sulphuric acid (UK), Sulphuric(IV) acid (UK)) is the chemical compound with the formula H2SO3. There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase.[1] The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogen sulfite) and sulfite.

An example of a temporary disruption from equilibrium is a temperature change, this would be compensated through sweating.

This refers to a constant state in which forces are balanced. Inside the body, equilibrium means certain conditions such as the level of oxygen or the temperature are constant.

This can be lost due to many factors, in the body, this occurs as a result of sudden changes either inside or outside the body. An example of this is sudden temperature changes, for example, if you go out of your house and it is snowing or it is very hot outside.

The body has specific mechanisms to restore the temperature. For example, if the environmental temperature is too high the body uses sweating to keep a constant temperature.

Note: This question is incomplete because the list of part 1 is not given; due to this, the answer is based on general knowledge.

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Answer: describe in general a process desert plants might need to carry out in order to maintain homeostasis

Explanation:

Answer: Scientific Theory is a is a well-substantiated explanation  of something you have repeatedly confirmed through observation and experiment.  

Answer:

1. Sometimes there’s a metallic taste to the water

2. The water becomes hot if left in your car or outdoors in hot weather

3. Bottle can dent if dropped

4. Paint sometimes peels off exterior of metal bottles

5. Metal water bottles lined with a resin lining also leach BPA. Do not get a bottle with what appears to be a “colored” lining of any kind.

Explanation:

Answer:

Steel feels cold, can dent, and is heavy. Sometimes it has a strange taste. Steel can also stain with use.

Explanation:

Hope this helps! :)

Answer:

A

Explanation:

as something is heated, it gains kinetic energy

The concentration of iron(iii) chloride contaminant in the original groundwater sample is (C1 × V1 / V) × 162.2 g/mol.

Given that the chemist adds m silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected of silver chloride. Let us calculate the concentration of iron(iii) chloride contaminant in the original groundwater sample.Calculating the concentration of iron(iii) chloride contaminant in the original groundwater sample

Here is the given information;

Mass of silver chloride precipitate = m grams

Volume of groundwater sample taken = V ml

Volume of AgNO3 solution used = V1 ml

Concentration of AgNO3 solution = C1

Molar Mass of AgCl precipitated = 143.5 g/mol

The molarity of AgNO3 solution is given as;

Molarity of AgNO3 = Number of equivalents / Volume of solution in liters

We know that 1 mole of AgNO3 gives 1 mole of AgCl, i.e., AgNO3 is equivalent to AgCl.Therefore, the number of equivalents of AgNO3 is the same as the number of equivalents of AgCl.

Number of equivalents of AgNO3 = C1 × V1

Number of equivalents of AgCl = m / 143.5 g/mol

Concentration of FeCl3 = (Number of equivalents of FeCl3 / Volume of sample in liters) × Molar mass of FeCl3

Number of equivalents of FeCl3 = Number of equivalents of AgNO3

Number of equivalents of FeCl3 = C1 × V1

Concentration of FeCl3 = (C1 × V1 / V) × Molar mass of FeCl3

Concentration of FeCl3 = (C1 × V1 / V) × 162.2 g/mol

Hence, the concentration of iron(iii) chloride contaminant in the original groundwater sample is (C1 × V1 / V) × 162.2 g/mol.

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Answer: Frost is form when to things happen Condensation (Gas to liquid) and Freezing (water to ice)

Explanation:

The molecules slow down when the heat is lower in temperature.

Ten scientists, including Dalton, Thomson, Rutherford, Bohr, and Curie, contributed to the atomic theory through their groundbreaking discoveries and theories.

The atomic theory, our understanding of matter's fundamental building blocks, owes its development to numerous scientists. John Dalton proposed the modern atomic theory, while J.J. Thomson discovered the electron and suggested the "plum pudding" model. Ernest Rutherford's gold foil experiment revealed the atomic nucleus, and Niels Bohr expanded on this with the planetary model. James Chadwick discovered the neutron, Dimitri Mendeleev formulated the periodic table, and Marie Curie made significant contributions to radioactivity research. Werner Heisenberg and Erwin Schrödinger contributed to quantum mechanics, with Heisenberg formulating the uncertainty principle and Schrödinger developing wave equations.

Finally, Robert Millikan determined the electron's charge and mass through the oil-drop experiment. These ten scientists revolutionized our understanding of atoms and atomic structure, shaping the atomic theory as we know it today. Their discoveries and theories laid the foundation for further advancements in physics and paved the way for technological applications of atomic knowledge.

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Complete Question

Who are the 10 scientists that contributed to the atomic theory?

Answer:

C

Explanation:

The percent composition of an atom in a molecule gives information regarding the relative amount of mass an atom contributes to a molecule.

An electron will emit energy in quanta when its energy state changes from 4p to 3s.

When a quantum mechanical system or particle is bound, or spatially constrained, it can only take on specific discrete energy values, or energy levels. As opposed to classical particles, which can have any energy level, this. The phrase can also refer to the energy levels of nuclei or the vibrational or rotational energy levels in molecules. The term is most frequently used to describe the energy levels of the electrons in atoms, ions, or molecules that are confined by the electric field of the nucleus. A system with such distinct energy levels is said to have a quantized energy spectrum.

An electron shell, also known as a primary energy level, is the orbit of one or more electrons around the nucleus of an atom in chemistry and atomic physics. The "1 shell" (also known as the "K shell") is the shell that is closest to the nucleus. The "2 shell" (also known as the "L shell"), "3 shell" (also known as the "M shell"), and so forth are the shells that are further and more away from the nucleus. The shells are either labelled alphabetically with X-ray notation letters or with the primary quantum numbers (n = 1, 2, 3, 4...) (K, L, M, N...).

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A. Light waves travel at a speed of about 300,000,000 m/s in empty  space.

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Answer:

A

Explanation:

i took the quizz .

Answer:

Yes, it is possible. Let us consider an example of two solutions, that is, solution A having 20 percent mass RbCl (rubidium chloride) and solution B is having 15 percent by mass NaCl or sodium chloride.  

It is found that solution A is having more concentration in comparison to solution B in terms of mass percent. The formula for mass percent is,  

% by mass = mass of solute/mass of solution * 100

Now the formula for molality is,  

Molality = weight of solute/molecular weight of solute * 1000/ weight of solvent in grams

Now molality of solution A is,  

m = 20/121 * 1000/80 (molecular weight of RbCl is 121 grams per mole)

m = 2.07

Now the molality of solution B is,  

m = 15/58.5 * 1000/85

m = 3.02

Therefore, in terms of molality, the solution B is having greater concentration (3.02) in comparison to solution A (2.07).

The limiting reagent in this scenario is \(O_{2}\) because we have more \(H_{2}\) (20 moles) than is required (16 moles).

We must compare the mole ratios of the reactants to the stoichiometry of the balanced equation in order to identify the limiting reagent. The reaction's balanced equation is as follows:

2 H₂ + O₂ -> 2 H₂O

We can deduce from the equation that the \(O_{2}\) to \(H_{2}\) ratio is 1:2. Therefore, we require two moles of \(H_{2}\) for every one mole of \(O_{2}\).

We can determine the quantity of \(H_{2}\) required for the reaction if we have 8 moles of \(O_{2}\) and 20 moles of \(H_{2}\):

2 moles of \(H_{2}\) divided by 1 mole of \(O_{2}\) results in 16 moles of \(H_{2}\).

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Hope my answer helps you.

\(NH_4OH KCl\ < - > \ KOH NH_4Cl.\)

This chemical reaction represents an acid-base reaction. The correct answer is (b)

In this reaction, ammonium hydroxide acts as a weak base, while potassium hydroxide acts as a strong base. Hydrochloric acid (HCl) is a strong acid, and ammonium chloride (\(NH_4Cl\)) is a salt formed from the reaction between an acid and a base. The reaction involves the transfer of a proton (H+) from the ammonium hydroxide to the chloride ion. This proton transfer characterizes an acid-base reaction, where a base (\(NH_4OH\)) accepts a proton from an acid (HCl), resulting in the formation of the salt \(NH_4Cl\) and water (\(H_2O\)) as a product. Hence, the correct answer is (b).

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Answer: Fingerprints are not conclusive evidence on their own.

Explanation:

The thief could have worn gloves and those fingerprints could belong to the owners. If the fingerprints don't match those of the owners', you would still need more evidence to prove that those belong to the killer, such as their whereabouts at the time the vase was stolen, motive, etc. Fingerprints are not conclusive evidence on their own.

Answer:

Approximately \(1.92\).

Explanation:

The \({\rm pH}\) of a solution is the opposite of the base-\(10\) logarithm of that solution's \({\rm H^{+}}\) concentration measured in \({\rm mol \cdot L^{-1}}\). In other words:

\({\rm pH} = - \log_{10} ([{\rm H^{+}])\).

Using properties of logarithms:

\(\begin{aligned}{\rm pH} &= - \log_{10} ([{\rm H^{+}]) \\ &= -\left(\frac{\ln([{\rm H^{+}]})}{\ln(10)}\right)\end{aligned}\).

In this question, \([{\rm H^{+}}] = 1.2 \times 10^{-2}\; {\rm mol \cdot L^{-1}}\). Therefore:

\(\begin{aligned}{\rm pH} &= - \log_{10} ([{\rm H^{+}]) \\ &= -\left(\frac{\ln([{\rm H^{+}]})}{\ln(10)}\right) \\ &= - \frac{\ln(1.2 \times 10^{-2})}{\ln(10)} \\ &\approx 1.92\end{aligned}\).

By convention, the number of decimal values in the \({\rm pH}\) should be equal to the number of significant figures in the \({\rm H^{+}}\) concentration of the solution.

In this question, there are two significant figures in the measurement\([{\rm H^{+}}] = 1.2 \times 10^{-2}\; {\rm mol \cdot L^{-1}}\). Thus, the \({\rm pH}\) result should be rounded to two decimal places.

Answer:

the last one it increases number of collisions by speeding up the particle motion

Explanation:

the more thermal energy something it has the faster particles move

Heterogeneous nucleation and subsequent planar growth allows the generation of a dendritic structure in cast metals, the given statement is true because dendritic structures are common in cast metals, particularly those that solidify quickly.

Dendrites are formed when liquid metal solidifies and develops in a non-uniform manner as a result of the directional growth of individual crystal grains from the nucleation site. Heterogeneous nucleation can occur on solid surfaces like mould walls, where dendrite formation happens in casting processes with an external mould. In the case of a metal casting, the first solidified metal, referred to as the "seed", serves as a heterogeneous nucleation site from which the dendrite grows.

The seed will continue to grow dendritically in all directions until it reaches the casting's outside edge as the metal begins to solidify. This leads to the development of a dendritic structure. Example: Pure aluminum solidifies in the form of dendrites under ordinary circumstances, which is a classic example of dendritic growth in metal solidification. So therefore the given statement is true because dendritic structures are common in cast metals, particularly those that solidify quickly.

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In a synthesis, the temperature inside the reaction flask is called reflux. the internal reation temperature for diels alder reaction studied today  is  25°C to 100°C.

The Diels -Alder reaction is the reaction between congugated di-ene and alkene (commonly termed as dienophile) to form unsaturated six - membered rings.The reaction involves the formation of cyclic product , so, it is also called as cycloaddtion.

Diels alder reaction occurs at low temperature to moderate temperature while retro diels alder reaction require high temperature often above 200°C. Diels alder reaction is a reversible process and at high temperature diels alder reaction can be reverted to starting diene and dienophile.

Hence,In a synthesis, the temperature inside the reaction flask is called reflux. the internal reation temperature for diels alder reaction studied today  is  25°C to 100°C.

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The probability that a person has the disease given that the test indicates the presence of the disease is approximately 0.9968

To calculate the probability that a person has the disease given that the test indicates the presence of the disease, we can use Bayes' theorem.

Let's denote:

A = Event of having the disease

B = Event of the test indicating the presence of the disease

We are given the following probabilities:

P(A) = 0.03 (3% of the population actually has the disease)

P(B|A) = 0.93 (the test indicates the presence of the disease 93% of the time when the disease is actually present)

P(B|not A) = 0.004 (the test indicates the presence of the disease 0.4% of the time when the disease is not present)

We need to find P(A|B), the probability that a person has the disease given that the test indicates the presence of the disease.

Applying Bayes' theorem:

\(P(A|B) = (P(B|A) * P(A)) / P(B)\)

To calculate P(B), we can use the law of total probability:

\(P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)\)

\(P(not A) = 1 - P(A) = 1 - 0.03 = 0.97\)

Substituting the values into the equation:

\(P(B) = (0.93 * 0.03) + (0.004 * 0.97) ≈ 0.0279\)

Now, calculating P(A|B):

\(P(A|B) = (0.93 * 0.03) / 0.0279 ≈ 0.9968\)

Therefore, the probability that a person has the disease given that the test indicates the presence of the disease is approximately 0.9968 (rounded to four decimal places).

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Answer:

Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body

Explanation:

Aqueous solutions are solutions that contain a homogenous mixture of two or more substances. When an aqueous solution of Mg(NO3)2 and NaOH react, the net ionic equation is obtained by removing spectator ions from the complete ionic equation. Option (D) NaNO3 would not appear in the corresponding net ionic reaction.The correct option is (D) NaNO3.

Aqueous solutions are solutions that contain a homogenous mixture of two or more substances. Magnesium nitrate is an ionic compound with the chemical formula Mg(NO3)2, and is soluble in water. Sodium hydroxide (NaOH) is a base that is also soluble in water, forming an aqueous solution. When an aqueous solution of Mg(NO3)2 and NaOH react, the net ionic equation is obtained: Mg2+ (aq) + 2OH- (aq)  Mg(OH)2 (s). Option (D) NaNO3 would not appear in the corresponding net ionic reaction.

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Na+ would not appear in the corresponding net ionic reaction. The net ionic reaction is a chemical reaction in which the spectator ions are eliminated, and the reactants and products of the reaction are expressed as ionic compounds.

In this question, we are given an aqueous solution of Mg(NO3)2 and NaOH, which generates the solid precipitate Mg(OH)2. The equation for the reaction is;Mg(NO3)2 (aq) + 2 NaOH (aq) → Mg(OH)2 (s) + 2 NaNO3 (aq)The net ionic equation is given by;Mg2+ (aq) + 2 OH− (aq) → Mg(OH)2 (s)

In the net ionic reaction, only the ions that are involved in the formation of the precipitate are shown. The spectator ions, which are not involved in the formation of the precipitate, are removed. The corresponding net ionic reaction for the given reaction would not include Na+ ions as they are spectator ions and do not play any role in the formation of the precipitate.

Hence, the correct option is Na+.Therefore, Na+ would not appear in the corresponding net ionic reaction.

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Answer: The vapor pressure of ethanol at \(26.3^{o}C\) is 238.3 torr.

Explanation:

Given: \(\Delta H_{vap}\) = 38.6 kJ/mol

\(T_{1} = 26.3^{o}C = (26.3 + 273) K = 299.3 K\)

\(T_{2} = 78.4^{o}C = (78.4 + 273) K = 351.4 K\)

Formula used to calculate the vapor pressure of ethanol is as follows.

\(ln\frac{P_{2}}{P_{1}} = \frac{\Delta H_{vap}}{R} [\frac{1}{T_{1}} - \frac{1}{T_{2}}]\\\)

Substitute the values into above formula as follows.

\(ln\frac{P_{2}}{P_{1}} = \frac{\Delta H_{vap}}{R} [\frac{1}{T_{1}} - \frac{1}{T_{2}}]\\ \\ln \frac{760 torr}{P_{1}} = \frac{38600 J}{8.314 J/mol K}[\frac{1}{299.3} - \frac{1}{351.4}]\\\frac{760}{P_{1}} = 3.18\\P_{1} = 238.3 torr\)

Thus, we can conclude that the vapor pressure of ethanol at \(26.3^{o}C\) is 238.3 torr.

A substance's hue varies over time: Chemical transformation (Over time, the material is changing into a different chemical.

How can you tell whether a change you witness is chemical or physical?

In a physical change, the substance's shape or appearance changes, but the type of matter it contains stays the same. In contrast, when matter undergoes a chemical transformation, at least one new substance with novel features is created.

Not every change in colour results from a chemical shift. If one were to alter a substance's colour through a non-chemical interaction, such as painting an automobile, the alteration would be physical rather than chemical. This is due to the fact that the car's makeup has not changed.

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Answer:

The number of atoms in the reactants equals the number of atoms in the products.

Explanation:

In every chemical reaction equation there are two sides; the reactants sides and the products side. The reactants side shows the species that combine to form the products. On both sides of the reaction equation, chemical species are found to be composed of atoms.

The major principle in balancing of chemical reaction equations is that the number of atoms of each element in the reactants side must be equal to the number of atoms of the same element on the products side. Once this condition is achieved, we can now say that the chemical equation is balanced.

Answer:

Answer D: The number of atoms in the reactants equals the number of atoms in the products.

Explanation:

Had the answer plus doing the quiz right now and got it right 100%

Assimilation is the step of the carbon cycle when a plant absorbs carbon dioxide for photosynthesis

What is Carbon cycle?

It is the process where carbon compounds are interchanged among the biosphere, geosphere, pedosphere, hydrosphere, and atmosphere of the earth.

Steps of Carbon cycle

Following are major steps involved in the process of carbon cycle:

Carbon assimilation is process of incorporating carbon from atmospheric carbon dioxide into cell components.

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The balanced chemical equation for the reaction between aluminum and silver nitrate is:

2 Al + 3 AgNO3 → 3 Ag + 2 Al(NO3)3

From the equation, we can see that 3 moles of aluminum nitrate (Al(NO3)3) are produced for every 3 moles of silver nitrate (AgNO3) consumed.

Therefore, if 0.75 moles of silver nitrate react, we can calculate the number of moles of aluminum nitrate produced as follows:

0.75 mol AgNO3 x (2 mol Al(NO3)3 / 3 mol AgNO3) = 0.50 mol Al(NO3)3

So, 0.50 moles of aluminum nitrate (Al(NO3)3) are obtained from the reaction of 0.75 mol of silver nitrate with a sufficient amount of aluminum.

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Absolute zero is the lowest possible temperature that a substance can theoretically reach, at which point all molecular motion ceases.

It is represented as 0 Kelvin on the Kelvin temperature scale, which is the only temperature scale that has a true zero point. At absolute zero, the kinetic energy of a substance is at its minimum possible level, since there is no molecular motion and therefore no energy in the form of heat. This makes absolute zero a key reference point for temperature measurement and the study of thermodynamics.

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