Calculate the density of SO3 gas at STP.

The addition of hydrogen carbonate to bromothymol blue turns the solution blue. Thus, option B is correct.

The balanced equation for the dissociation of bromothymol blue is:

\(\rm HC_2H_3O_2\;\leftrightharpoons H^+\;+\;C_2H_3O_2^-\)

The color of dissociated form is yellow and undissociated form is blue.

The addition of hydrogen carbonate results in the dissociated ions as:

\(\rm H_2CO_3\;\rightarrow\;2\;H^+\;+\;CO_3^-\)

The dissociation results in the increased hydrogen ion concentration. The undissociated form in the reaction mixture increases.

Thus, the color of the solution will turn blue. Hence, option B is correct.

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Answer:

A. The solution will remain yellow.

Explanation:

Correct on Edge 2022!!!

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Metal solids tend to be good conductors because of the property of electron mobility.

Metal cations are the building blocks of metallic solids, and a delocalized "sea" of valence electrons holds them all together. Metallic solids are good conductors of heat and electricity because of the mobility of their electrons. Metal atoms bound together by metallic bonds form metallic solids, which are solids. These linkages act as expansive molecular orbitals that cover the entire solid.

The electrons in metallic solids are hence delocalized. They are not only linked together by two atoms in a sigma bond. Metals are effective heat and electricity conductors because they contain at least one free electron per atom, which means that it is not bound to any one atom and is therefore free to travel about the metal.

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We can use the ideal gas law equation to get the volume of the sample:

PV = nRT

Where:

P = pressure (in atm)

V = volume (in liters)

n = number of moles

R = ideal gas constant (0.0821 L·atm/mol·K)

T = temperature (in Kelvin)

The temperature must first be converted from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 34 + 273.15 = 307.15 K

The values ​​can now be entered into the ideal gas law equation as follows:

1.21 atm * V = 4.22 mol * 0.0821 L·atm/mol·K * 307.15 K

Simplifying the equation:

V = (4.22 mol * 0.0821 L·atm/mol·K * 307.15 K) / 1.21 atm

V = 87.886 L

The volume is roughly 87.9 L, rounded to three significant numbers.

Therefore, the correct option is A.

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Answer:

what? that's 66 total, 6 more elliptical machines, a 1 to 1.2 ratio

but I don't know what else you would mean

Answer:

5:6

Explanation:

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Answer:

YELLOW

Explanation:

Answer:

Atomic radius increases by increasing the atomic number.

Explanation:

Atomic radius :

Atomic radius is the distance between nucleus of an atom to its outer most electronic shell.

Trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

The given data show that the atomic number in increased from 4 to 88 it means atomic radius also increased from 1.53Å to 2.83Å. It means the given data is the elements of periodic table present in group. It is the data of 2nd group of periodic table.

Explanation:

Mass (m)=0.3 kg

height(h)=2.6 m

acceleration due to gravity (g)=10m/s^2

Potential energy= MGH

=0.3×10×2.6

7.8 J

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Calcium carbonate (CaCo3) is a white solid and gaseous with the density of 2.71 g/cm^3 that can be easily calculated or observed without a chemical reaction, so it is simply a physical property.

Now the second sentence says that it reacts readily with an acid to produce gaseous carbon dioxide.

Let's take a chemical reaction:

CaCO3( Calcium Carbonate) + 2HCl (Hydrochloric Acid) ----> CaCl2 (Calcium Chloride) + CO2 (Carbon Dioxide) + H2O (Water)

Hence it readily reacts with acids so it is clearly a chemical change and falls into chemical property.

Physical properties denote or comprises density, color, melting and boiling point where as chemical properties comprises of it goes in a particular chemical reaction and changes.

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The element named for Time magazine's "Person of the Century" is Einsteinium which was named in recognition of Einstein's significant contributions to the field of physics.

Time magazine declared Albert Einstein as the "Person of the Century" in 1999. As a tribute to his contributions to physics and his role in shaping our understanding of the universe, the element with atomic number 99 was named Einsteinium (symbol: Es) in his honor.

Einsteinium is a synthetic element that was first synthesized in 1952 during the testing of a thermonuclear bomb. It is highly radioactive and has no practical applications outside of scientific research.

The element named for Time magazine's "Person of the Century," Albert Einstein, is Einsteinium (Es). This element, with atomic number 99, was named in recognition of Einstein's significant contributions to the field of physics and his enduring legacy as one of the greatest scientific minds in history.

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The conversion factor that should be used to convert an area from square inches (\(\text in^2\)) to square centimeters (\(\text cm^2\)) is \(\rm (2.54 cm)^2\) / \(\rm (1 in)^2\) .

A conversion factor is a numerical ratio that expresses the relationship between two different units of measurement. It is used to convert a quantity from one unit to another unit.

In this case, conversion factor between inches (in) and centimeters (cm) is 1 in = 2.54 cm, so the conversion factor between square inches and square centimeters is:

\(\rm (1 in)^2 = (2.54 cm)^2\)

Squaring both sides of the equation gives:

\(\rm 1 in^2 = (2.54 cm)^2\)

Therefore, to convert an area from square inches to square centimeters, we can multiply the area in square inches by the conversion factor:

area in \(\rm cm^2\) = area in \(\rm in^2 \times (2.54 cm)^2 / (1 in)^2\)

Simplifying the expression gives:

area in \(\rm cm^2\) = area in\(\rm in^2 \times 6.4516\)

So, to convert an area from square inches to square centimeters, we should multiply the area in square inches by 6.4516.

Therefore, The conversion factor between square inches and square centimeters is\(\rm (2.54 cm)^2\) / \(\rm(1 in)^2\), and to convert an area from square inches to square centimeters, we should multiply the area in square inches by 6.4516.

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The principle of option D. Uniformitarianism states that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the

Option D. Uniformitarianism is the principle stating that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the geologic past. It is based on the idea that the present is the key to the past. In other words, the same natural laws that operate in the universe today have been operating since the beginning of time.

James Hutton was the first to propose this principle in the late 18th century. He suggested that the Earth was shaped by slow-acting geological forces such as erosion, sedimentation, and uplift over long periods of time. He believed that the same processes were still happening today and that they had operated in the past.

This principle is an important concept in geology because it allows scientists to interpret the Earth's history based on the processes that they observe today. By understanding how these processes work and how they have changed over time, scientists can reconstruct the history of the Earth and its environments.

Uniformitarianism has been tested and proven through many observations and experiments. For example, the study of sedimentary rocks has shown that they were formed in the past through the same processes that are observed today, such as deposition of sediment by water, wind, or ice.

Similarly, the study of volcanoes has shown that they are formed by the same processes as today, such as the movement of magma from deep within the Earth.

In conclusion, Uniformitarianism is the principle that allows us to interpret the Earth's history by observing the processes that shape it today. It is a fundamental concept in geology and has been tested and proven through many observations and experiments.

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The mass of the product is 25.5 g.

A reaction takes place between reactants and products in a reaction system. The reaction in this case could be written as;

4C3H6 + 6NO --> 4C3H3N + 6H2O + N2

Number of moles of C3H6 = 21.6 g/42 g/mol = 0.51 moles

Number of moles of NO = 21.6 g/30 g/mol = 0.72 moles

Given that 4 moles of C3H6 reacts with 6 moles of NO

0.51 moles of  C3H6 reacts with 0.51 moles  *  6 moles / 4 moles

= 0.77 moles

This implies that NO is the limiting reactant.

Hence;

6 moles of NO produces 4 moles of C3H3N

0.72 moles of NO produces 0.72 moles * 4 moles/6 moles

= 0.48 moles of C3H3N

Mass of C3H3N =0.480 mol ×53.06 g/mol= 25.5 g

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Answer:

The answer is lemonade.

Weaker acids are those which tend to have a higher pH from 4 to at least 6 stronger acids have low pH from 2 and below that's from 2 to 0.

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Answer:

I, II.AND V ARE ISOSOPED WITH AN ATOMIC # OF 5

II AN IV ARE ISIOTOPES WITH AN ATOMIC# OF 6

Explanation:

Which among the following represents a set of isotopes? Atomic nuclei that contain:

I) 5 protons and 5 neutrons

II) 5 protons and 6 neutrons

III) 6 protons and 6 neutrons

IV) 6 protons and 5 neutrons

V) 5 protons and 7 neutrons

I, II.AND V ARE ISOSOPED WITH AN ATOMIC # OF 5

II AN IV ARE ISIOTOPES WITH AN ATOMIC# OF 6

i]

Aspirin is the sector's most regularly used medicinal drug. The chemical analysis of aspirin indicates that the molecule is 60.00% carbon, 4.44% hydrogen, and 35.56%.

Empirical records.relying on revel in or commentary by myself regularly with out due regard for system and theory. an empirical basis for the idea. Empirical research is primarily based on found and measured phenomena and derives information from actual revel in in place of from principle or perception.

An instance of empirical evaluation might be if a researcher changed into inquisitive about locating out whether or not paying attention to satisfied music promotes prosocial behaviour. An experiment might be carried out where one organization of the target audience is uncovered to happy song and the other isn't always uncovered to track at all.

A element is proof for a proposition if it epistemically supports this proposition or suggests that the supported proposition is authentic. evidence is empirical if it's miles constituted by or available to sensory revel in.

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Empirical formula, The compound's most simple formula is this one. This formula contains the simplest whole number ratio of different atoms. 12 + 2 * 1 + 16 = 30 as a result.

Then, we calculate that 90/30 = 3. The end result is C3H6O3 from 3*(CH2O).

mathematical simulation

Its formula is the simplest of the compound's three.

This formula includes the fundamental whole number ratio of all atoms.

Both the molecular and empirical formulations contain the same element, which has the same proportion content.

In an empirical formula, a compound's atoms are organized in the simplest whole-number ratio possible.

The molecular formula shows the precise number of different types of atoms that make up a compound's molecule.

For example, the empirical formula for acetylene is CH.

In reality, the procedure is quite simple; the first step is to ascertain the molar mass of the empirical unit.

As a consequence, 12 + 2 * 1 + 16 = 30.

Hence, we determine that 90/30 = 3.

C3H6O3 is the final product from 3*. (CH2O).

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The concentration of the original solution is 15.63 M.

The original solution concentration can be found using the formula

\(C_1V_1 = C_2V_2,\)

where \(C_1\) is the original solution concentration,

\(V_1\) is the volume of the original solution,

\(C_2\) is the concentration of the sample solution, and \(V_2\) is the volume of the sample solution.

In this case,

\(C_1\)= (2.50 M)(100.0 ml) / (16.0 ml)

\(C_1\) = 15.63 M

Therefore, the concentration of the original solution is 15.63 M.  

\(C_1V_1 = C_2V_2,\) is based on the principle of conservation of mass, which ensures that the total number of solute particles remains constant when a solution is diluted or concentrated.

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The growing understanding of how proteins fold allows researchers to make predictions about protein structure based on amino acid sequence data. Considering the amino acid sequence.

a) Bends or turns are most likely to occur at residues 7 and 19 because Pro residues are often (but not always) found at bends in globular folded protiens. A bend may also take place at the Thr residue (residue 4) and, assuming that this is a portion of a larger polypeptide, at the Ile residue (residue 1).

GPFG and QPDG

b) Where might intrachain disulfide cross-lingages be formed between residues 13 and 24 (Cys residues).

c) interior (hydrophobic): ALA, Ile exterior (hydrophillic): Gln, Lys, Asp

THR- intermediate and could found at both.

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Answer:

The physical properties of minerals are determined by the atomic structure and crystal chemistry of the minerals. The most common physical properties are crystal form, color, hardness, cleavage, and specific gravity. One of the best ways to identify a mineral is by examining its crystal form (external shape).

The answer is "Location E, because Earth's axis is tilted towards the sun" :D

Answer:

C. Location E, because earth's axis is tilted towards the sun

Explanation:

The features of a standard hydrogen electrode are :

1. Temperature of 298 K (25°C)

2. Carbon electrode

3. Hydrogen gas at 1.01 x 10^5 Pa (1 atm) pressure

4. Electrolyte solution containing a hydrogen ion activity of 1 mol/L

5. Platinum wire as the current collector

6. A Potential of 0.00 V (relative to the hydrogen gas)

These features are what make up the Standard Hydrogen Electrode (SHE). The temperature of 298 K is the temperature at which the SHE is calibrated and is the standard temperature used in most laboratory experiments. The carbon electrode serves as the interface between the hydrogen gas and the electrolyte, and the hydrogen gas is held at 1.01 x 10^5 Pa (1 atm) pressure. The electrolyte solution contains a hydrogen ion activity of 1 mol/L, which is necessary for the electrode to function properly. A platinum wire is used as the current collector, and the electrode has a potential of 0.00 V, relative to the hydrogen gas. All of these features are necessary for the SHE to function properly and for the electrode to serve as the reference for all other electrochemical measurements.

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Answer:

2Al2O3 (l) ---> 4Al (l) + 3O2 (g)

Explanation:

The reaction is the electrolysis of aluminium oxide. It decomposes aluminium oxide (Al2O3) into aluminium metal (Al) and Oxygen (O2). In this process, aluminium oxide is molten (liquid state) so that ions can move to complete the electricity circuit.

Al2O3 (l) ---> Al (l) + O2 (g)

Balance the equation:

2Al2O3 (l) ---> 4Al (l) + 3O2 (g)

2 liters of the 80% acid solution must be added to 4 liters of the 20% acid solution to obtain a 40% acid solution.

Let's denote the number of liters of the 80% acid solution to be added as x.

To determine the amount of acid in the resulting solution, we can calculate the sum of the acids in the initial solutions and set it equal to the acid in the final solution.

The acid in the 80% solution (0.80x) added to the acid in the 20% solution (0.20 × 4 liters) should be equal to the acid in the final 40% solution (0.40 × (4 + x) liters).

This can be expressed as:

0.80x + 0.20 × 4 = 0.40 × (4 + x)

Simplifying the equation:

0.80x + 0.80 = 1.60 + 0.40x

Combining like terms:

0.80x - 0.40x = 1.60 - 0.80

Simplifying further:

0.40x = 0.80

Dividing both sides by 0.40:

x = 2

Therefore, 2 liters of the 80% acid solution must be added to 4 liters of the 20% acid solution to obtain a 40% acid solution.

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The activation energy for the given chemical reaction is 83.3 kJ/mol.

The activation energy of a chemical reaction can be calculated using the Arrhenius equation which relates the rate constant of a reaction with temperature and activation energy. By knowing the rate constants at two different temperatures, we can calculate the activation energy of the reaction.

The Arrhenius equation is given by: k = A * exp(-Ea/RT)

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.

In this case, we are given the rate constants at two different temperatures, which allows us to calculate the activation energy of the reaction.

By taking the natural logarithm of the Arrhenius equation at both temperatures and subtracting the resulting equations, we can obtain the activation energy.

By using the given data and solving the equation, we find that the activation energy for the reaction is 83.3 kJ/mol.

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Answer:

Cilindros graduados

Explanation:

Son una herramienta de medición primaria para el volumen de un líquido, y tiene varias marcas hacia arriba y hacia abajo a lo largo del contenedor con incrementos específicos. Los cilindros graduados vienen en muchos tamaños; entre más pequeños sean de diámetro, más específicas serán las mediciones de volumen. Al leer el volumen de un cilindro graduado, notarán que el líquido parece tener una muesca; el líquido alrededor de los bordes será más alto que el líquido en el centro, inclinándose hacia abajo como los lados de un trampolín cuando alguien está parado en el medio. Esto se llama el menisco. Alineen el punto más bajo del menisco con la marca más cercana, manteniendo el nivel del cilindro para leer correctamente el volumen.

Answer:

Plants use carbon dioxide to make their food

Explanation:

The most important role of carbon dioxide in the ecosystem is that plants use the compound to make food.

Since plants are primary produces, the food is taken by other organisms in the ecosystem for their own nourishment.