Suppose that, in a given reaction, the enthalpy (H) increases by 10 units, and the disorder (TS) increases by 12 units. Would this reaction be considered spontaneous

Answer:

Power

Explanation:

That’s the answer

The water containing 2% starch solution will not change color immediately when lugol's iodine is added. A dialysis bag is a membrane that is semipermeable and holds the fluids that the kidneys normally remove. They are also used in the experiments.

A solution made of potassium iodide and iodine is known as lugol's iodine. The properties can be used as a reagent and an antiseptic and could be used to diagnose cancer. The iodine in Lugol's solution binds to glycogen's alpha-1,4 glucans, which are polysaccharides. This solution takes time to develop blue color when added to the 2% starch solution.

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Answer:

High melting point.

Explanation:

An example of a high melting point would be: 4215 K (3942 °C, 7128 °F).

Answer:

High melting point.

Explanation:

Answer:

the branch of science that deals with the identification of the substances of which matter is composed. the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.

Explanation:

Answer:

Aluminum

Explanation:

Answer:

C2H6O + 3 O2 = 2 CO2 + 3 H2O

Type of reaction: combustion

The synthesis of carboxylic acid can be done by hydrolysing the nitrile which is substituted in place of halide by using cyanide ion. The structure that contains a nitrile is OCH2C≡N.

A nitrile is an organic compound that contains a carbon triple bonded to a nitrogen atom.

The general formula for a nitrile is R–C≡N, where R is an alkyl or aryl group. In the structure OCH2C≡N, the OCH2 group is the alkyl group and the C≡N is the nitrile functional group. Therefore, this structure contains a nitrile.

To synthesize a carboxylic acid from an alkyl halide, you can first convert the alkyl halide to a nitrile through a substitution reaction with a cyanide ion. The nitrile can then be hydrolyzed to form a carboxylic acid. The overall reaction is:

R–X + CN– → R–C≡N → R–COOH

Where R is an alkyl or aryl group, X is a halogen, and CN– is a cyanide ion.

In conclusion, the structure that contains a nitrile is OCH2C≡N and it can be used to synthesize a carboxylic acid from an alkyl halide through a substitution reaction followed by hydrolysis.

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All the following may change during a chemical reaction except (a) the total number of atoms in the system.

Chemical reactions follow the law of conservation of mass which states that mass is neither destroyed nor created during a chemical reaction. This means that the total number of atoms during the reaction remains constant.

In physics and chemistry, the Law of Conservation of Mass, or the Principle of Conservation of Mass, states that in a system that is closed to all transfers of matter and energy, the mass of the system must remain constant over time. increase. The system cannot be changed. In other words, you cannot add or remove quantities. Mass is therefore conserved over time. [1]

This law implies that mass can be rearranged in space and change the shape of the entity associated with it, but it cannot be created or destroyed.

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According to the website that I use to figure out things about science or chemistry and that stuff... The answer is 3.5 L KBr x 1.7 mol KBr solute / 1 L KBr solution x 1 mol Cl2 / 2 mol KBr x 70.9 g Cl2 / 1 mol Cl2 = 211 g Cl2.

Answer :  The acid ionization constant (Ka) for the given acid HA is 1.1 x 10^(-5), rounded to two significant figures.

To calculate the acid ionization constant (Ka) for the given acid HA, we must first find its pH using the given concentration of the solution. Then, we can use the pH to find the concentration of H+ ions in the solution. Finally, we can plug these values into the expression for Ka to solve for the acid ionization constant.

The pH of the 0.120 M solution of HA is given to be 3.28. This means that [H+] = 10^(-pH) = 10^(-3.28) = 5.01 x 10^(-4) M.
Now, we can use the expression for Ka: Ka = [H+][A-]/[HA],  Since HA is a weak acid, we can assume that it dissociates as follows: HA + H2O ⇌ H3O+ + A- This means that [A-] = [H3O+], and [HA] = initial concentration of the acid (0.120 M) - [H3O+].

Substituting these values, we get: Ka = (5.01 x 10^(-4) M)^2 / (0.120 M - 5.01 x 10^(-4) M) = 1.1 x 10^(-5). Therefore, the acid ionization constant (Ka) for the given acid HA is 1.1 x 10^(-5), rounded to two significant figures.

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Answer:

1995,33.7

Explanation:

The points is an outlier on the graph is 1992, 45.4 thousand.

So, option D is correct one.

In the given graph we can observe that all data are plots on the line like  1999, 18.7 thousand , 1995, 33.7 thousand and 1990, 37.5 thousand except  1992, 45.4 thousand which is out of the line.

The data can be represented by different types of graphs.There are many types of graphs, some are given below.

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Answer:

2

Explanation:

\(mole = \frac{mass}{relative \: molecular \: mass} \)

Mass of Na2SO4 = 284.078g

Relative Molecular Mass = 142g/mol

\(therefore \\ mole = \frac{284.078}{142} \)

mole = 2.000549

mole ≈ 2

Conclusion call the organized steps taken to answer a scientific problem.

The Scientific Method is defined as a logical and rational order of steps through which scientists come to conclusions related to the world around them. The Scientific Method helps in the organization of thoughts and procedures by which the scientists are in confident in the answers they find.

OBSERVATION is considered as the first step through which they get to know how they want to go about your research.

HYPOTHESIS is the step in which we think hypothetical means about the answer which we have to find.

PREDICTION is our specific belief about our scientific idea:like, If my hypothesis is true, then I predict we will discover this.

EXPERIMENT is defined as the tool that we invent to answer our question.

CONCLUSION is the answer which our experiment gives.

Thus, we concluded that the Conclusion call the organized steps taken to answer a scientific problem.

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Answer:

weak

Explanation:

this is my best guess

Combined gas equation: P1V1/T1 = P2V2/T2

Solving for V2:

V2 = P1V1T2/P2T1

T1 = 20 °C = 293.15 K

T2 = 30 °C = 303.15 K

V2 = (1.5 × 3.0 × 303.15)/(2.5 × 293.15)

V2 = 1.86 L

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the correct option is option A.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.  l nm = 1.0 × 10⁻⁶ fm

540 nanometers =  540 × 1.0 × 10⁻⁶ fm

                             =  5.40 x 10⁻⁴fm

Therefore, the correct option is option A.

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Answer:

CO2 carbon dioxide emissions

H20 mental breakdown

02 is form of a kind

answer is acid + alkaline equal to salt and water

The equation is not a transmutation because there is conservation of the number of atoms as well as the number of nucleons; option C.

Transmutation refers to the artificial synthesis of new elements by a nuclear reaction of the original element and nuclear particles.

In transmutation, a new element is formed and the atomic number changes.

Based on the above, it can be concluded that the given equation is not a transmutation because there is no change in atomic and nucleon number.

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They change the composition of matter to change the properties of matter.

There is matter all around you. All matter is made up of very small particles, including atoms and molecules. The objects you see and touch on a daily basis were constructed from those atoms. Anything that has mass and occupies space (has volume) is considered matter.

The quantity of matter in an item is its mass. A statue made of lead (Pb) or another little object with a lot of mass may be present. You might have a massive object with a small mass.

Additionally, you ought to be aware of the distinction between matter and weight. Weight is a measure of gravity's pull, whereas mass is a measure of the substance of an object.

Thus, They change the composition of matter to change the properties of matter.

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Answer:

30

Explanation:

v=m÷D

v=25÷5

volume=5

total volume=25+5

=30

Boyle's law, also known as Mariotte's law, is a relationship describing how a gas will compress and expand at a constant temperature.

Thus, The pressure (p) of a given quantity of gas changes inversely with its volume (v) at constant temperature, according to this empirical connection, which was established by the physicist Robert Boyle in 1662.

In equation form, this means that pv = k, a constant. The French physicist Edme Mariotte also found the connection.

With the assumption of an ideal (perfect) gas, the law can be derived from the kinetic theory of gases. At sufficiently low pressures, real gases follow Boyle's law, albeit at higher pressures, when the gas starts to deviate from ideal behaviour, the product pv typically drops off slightly.

Thus, Boyle's law, also known as Mariotte's law, is a relationship describing how a gas will compress and expand at a constant temperature.

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Answer:

Habitat loss

Explanation:

Have a great day!

Answer:

Habitat Lost

Explanation:

I got 100% on the test. (:

The pentose phosphate pathway (PPP) produces NADPH and 5-carbon sugars such as ribose.

Sugars are a type of carbohydrate that are commonly found in many foods and beverages. They are a source of energy for the body and are classified into two main groups: simple sugars and complex sugars.

Simple sugars, also known as monosaccharides, are single sugar molecules that include glucose, fructose, and galactose. These sugars are quickly absorbed into the bloodstream and provide a quick burst.The bloodstream is the continuous circulation of blood throughout the body via a network of blood vessels. The blood carries oxygen, nutrients, hormones, and other essential substances to the body's tissues and organs, while also removing waste products and carbon dioxide.The circulatory system is made up of the heart, blood vessels, and blood. The heart pumps oxygenated blood out to the body through arteries, and then the deoxygenated blood is returned to the heart through veins. Capillaries, the smallest blood vessels, connect the arteries and veins and allow for exchange of gases and nutrients between the blood and tissues.

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Answer: A  vacuum. Under the same conditions 16 s were required for the same number of moles of O2 to effuse. ... The molar mass of the unknown gas is 200 g/mol. calculation ... QUESTION 1 If gas-burning appliances are vented into an unlined masonry chimney, deteriorate and crumble and may · PLS HELP

Explanation:

Answer:

see the pic for the answer

The Diels-Alder mechanism among a diene and a dienophile is a concerted reaction, because of this that bond breaking occurs simultaneously with bond forming.

To help the mechanism be triumphant, the diene have to have an electron liberating organization and the dienophile have to have an electron taking flight organization.

A concerted reaction is a form of chemical response where all of the bond-forming and bond-breaking steps arise concurrently, in a single step. In other phrases, all of the reactants come collectively and react to shape the products with none intermediate steps.

Concerted reactions also are referred to as pericyclic reactions due to the fact they contain the formation and breaking of bonds in cyclic transition states. these reactions comply with a specific set of rules referred to as the Woodward-Hoffmann guidelines, which describe the allowed and forbidden modes of overlap among the orbitals of the reactants and products. These reactions are often utilized in organic synthesis to create complicated molecules with excessive stereoselectivity and regioselectivity.

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Complete Question:

The Diels-Alder mechanism between a diene and a dienophile is _____, which means that bond breaking happens _____ as bond forming.

To help the mechanism succeed, the diene should have an _____ group and the dienophile should have an ______ group.

Temperature constant, Boyle's law

P₁V₁=P₂V₂

3.15 = P₂.7

P₂=6.43 atm