calculate δg for the following reaction at 3000 k and 3.29 x 10-3 atm of cl2(g). 2agcl(s) → 2ag(s) cl2(g) δg° = 220 kj insert your answer rounded to 3 decimal digits.

The mass of (NH4) 2S in the solution is : Mass = 0.0600 mol × 60.08 g/mol = 3.60 g.

The given molarity and volume of the solution can be used to calculate the number of moles of ammonium sulfide (NH4)2S.Then, the number of moles can be converted to mass using the molar mass of (NH4)2S.Mass of ammonium sulfide (NH4)2S in 3.00 L of a 0.0200 M solution is given by : Mass = moles × molar mass.The number of moles of (NH4)2S can be found using the equation:Molarity = Number of moles / Volume.Rearranging this equation, we get:Number of moles = Molarity × Volume Number of moles of (NH4)2S = 0.0200 M × 3.00 L.Number of moles of (NH4)2S = 0.0600 mol.The molar mass of (NH4)2S can be calculated by summing the molar masses of ammonium (NH4) and sulfide (S) ions.Molar mass of (NH4)2S = (2 × Molar mass of NH4) + Molar mass of S= (2 × 14.01 g/mol) + 32.06 g/mol= 60.08 g/mol.

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Answer:

you multiply it by the other subscripts in the parenthesis.

Explanation:

Answer:

The H+ concentration would decrease by 10 fold. From .01 to .001

Explanation:

This is due to how a pH of 2 is expressed in scientific notation as 10^-2 power when referring to H+ concentration so a pH of 3 would be 10^-3. Hence it would be 10 times smaller in concentration as the power increases to the negative power the smaller the concentration becomes.

Answer:

1533.6 kg NO

Explanation:

The reaction that takes place is:

First we convert the masses of ammonia (NH₃) and oxygen gas (O₂) into moles, using their respective molar masses:

77.5 kmol of O₂ would react completely with (77.5 kmol O₂ * \(\frac{4kmolNH_3}{5kmolO_2}\)) 62 kmol of NH₃. There are not as many kmol of NH₃, so NH₃ is the limiting reactant.

Now we calculate how many kmol of NO are produced, using the limiting reactant moles:

Finally we convert kmol of NO to mass, using its molar mass:

There are approximately 6.031 x 10^23 molecules of O2 gas contained in 1357 mL of O2 gas at −14°C and 1437 torr.

we can use the ideal gas law:

PV = nRT

where, P = pressure of the gas in torr,

V = volume of the gas in liters,

n = number of moles of gas,

R = ideal gas constant (0.08206 L·atm/mol·K),

T = temperature of the gas in Kelvin.

the volume of the gas from milliliters (mL) to liters (L):

V = 1357 mL / 1000 mL/L

V = 1.357 L

Now to convert the temperature of the gas from Celsius (°C) to Kelvin (K):

T = -14°C + 273.15

T = 259.15 K

Substituting the given values:

(1437 torr) (1.357 L) = n (0.08206 L·atm/mol·K) (259.15 K)

n = (1437 torr x 1.357 L) / (0.08206 L·atm/mol·K x 259.15 K)

n = 1.0008 mol

the number of moles of O2 gas contained in 1357 mL of O2 gas at −14°C and 1437 torr is 1.0008 mol. To find the number of molecules,

we can use Avogadro's number:

1 mol of O2 gas contains 6.022 x 10^23 molecules

So, the number of molecules in 1.0008 mol of O2 gas is:

(1.0008 mol) x (6.022 x 10^23 molecules/mol) = 6.031 x 10^23 molecules

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Explanation:

We are given different isotopes and we have to identify the number of protons and neutrons that are in the nuclueus of each atom.

a) Carbon-14:

By definition two isotopes are atoms that have the same atomic number but different mass number. The atomic number of an atom is equal to the number of protons of that atom, and the mass number is equal to the number of protons plus the number of neutrons.

atomic number = n° of protons

mass number = n° of protons + n° of neutrons

n° of protons = atomic number

n° of neutrons = mass number - n° of protons

n° of neutrons = mass number - atomic number

If two isotopes have the same atomic number but different mass number we can say that two isotopes have the same number of protons but different number of neutrons.

In we pay attention to carbon-14 we can look for its atomic number in the period table: 6. And its mass number is the one that we are given after the name of the element: 14.

n° of protons = atomic number = 6

n° of protons = 6

n° of neutrons = mass number - atomic number = 14 - 6

n° of neutrons = 8

b) Cobalt-60:

atomic number = 27 (from the periodic table)

mass number = 60

n° of protons = atomic number = 27

n° of protons = 27

n° of neutrons = mass number - atomic number = 60 - 27

n° of neutrons = 33

c) Gold-197:

atomic number = 79 (from the periodic table)

mass number = 197

n° of protons = atomic number = 79

n° of protons = 79

n° of neutrons = mass number - atomic number = 197 - 79

n° of neutrons = 118

d) Uranium-235:

atomic number = 92 (from the periodic table)

mass number = 235

n° of protons = atomic number = 92

n° of protons = 92

n° of neutrons = mass number - atomic number = 235 - 92

n° of neutrons = 143

Answer:

a) Carbon-14: n° of protons = 6 n° of neutrons = 8

b) Cobalt-60: n° of protons = 27 n° of neutrons = 33

c) Gold-197: n° of protons = 79 n° of neutrons = 118

d) Uranium-235: n° of protons = 92 n° of neutrons = 143

According to the given statement The change in the entropy of the surroundings and the change in the entropy of the universe for the freezing 24.40 JK⁻¹.

Freezing is the process through which a liquid solidifies. Freezing happens when heat is transferred from a substance since this atoms slow down and form tighter bonds. An example of freezing is when water turns into ice.

H₂(g)+12O₂(g)→H₂O(l),

ΔrH∘=−6030KJmol−1

ΔSsurr=qsurrT

Entropy change = S

T = Temperature in K [T = 225 K under ideal circumstances]

Heat absorbed by the environment is measured by qsurr (qsurr=+241.1KJmol1)

ΔSsurr=-6030 /247.1

ΔSsurr=24.40 JK⁻¹ .

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Provider Information is not required (for secondary containers used in the workplace) on a hazardous material label.

The following components need to be on a label to be GHS compliant:

Identification of the product

warning or danger as a signal word

Risk pictograms

Advisory statements

Statements of caution

Provider Information (not required for secondary containers used in the workplace)

If the primary container fails, secondary containment acts as a backup barrier to prevent leaking into an exposed area. It is necessary to store all containers of hazardous waste and liquid hazardous materials in an appropriate secondary containment system. Systems for secondary containment may include

What information must be on labels for chemicals used at work?

The warning or signal phrase "Danger," "Warning" pictograms, "Hazmat" or "Precautionary" remarks, and "Product" and "Supplier" identification signs (supplier identification is not required for secondary containers used in the workplace)

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The energy that is released for the breaking of bonds is 229 kJ/mol.

We should be able to recall that the enthalpy of the reaction taken to be the energy that is evolved or absorbed in the reaction that is ongoing. We have to note that in the course of the reaction there would be the breaking and the making of bonds.

Now we know that;

The bond energy can be given as;

Sum energy of the broken bonds of reactants  - Sum of the energy of the formed bonds

Hence;

(945 + 498) - 2(607)

1443 - 1214

= 229 kJ/mol

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John Dalton created the very first atomic theory. Dalton was an English school teacher who performed many experiments on atoms.

According to Dalton's atomic theory, all matter is composed of small particles called atoms. Dalton provided some postulates of this theory. Some of the important ones are:

All matter is made of very tiny particles called atoms, which participate in chemical reactions. Atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction.

Atoms of a given element are identical in mass and chemical properties.

Atoms of different elements have different masses and chemical properties.

Atoms combine in the ratio of small whole numbers to form compounds.

The relative number and kinds of atoms are constant in a given compound.

The postulate of Dalton's atomic theory, i.e., "Atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction." is the result of the law of conservation of mass.

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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.

Hope this helps

Hope

Gloves should be changed periodically while working with biohazards to minimize the risk of contamination and maintain a safe working environment. Changing gloves helps prevent cross-contamination between different surfaces, samples, or individuals, reducing the potential spread of pathogens and biohazardous materials.

When working with biohazards, gloves act as a protective barrier between the hands and the hazardous materials. However, gloves can become contaminated with pathogens, toxins, or other biohazardous substances during the course of work. Changing gloves periodically ensures that any potential contamination on the surface of the gloves is removed, preventing the transfer of harmful substances to other surfaces or individuals. It helps maintain a clean and safe working environment by minimizing the risk of spreading biohazards. Regular glove changes are particularly important when handling different samples, moving between workstations, or transitioning to tasks with different biohazard risks.

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The melting point of (2R,3S)-2,3-dibromo-3-phenylpropanoic acid is dependent on several factors, including the purity of the compound and the presence of any impurities.

Therefore, an exact melting point cannot be provided without specific experimental data. However, it is generally observed that organic compounds have a range of melting points rather than a single specific value.

If you are conducting an experiment and need to determine the melting point of (2R,3S)-2,3-dibromo-3-phenylpropanoic acid, it is recommended to perform the melting point determination experimentally using appropriate laboratory techniques and equipment. This involves heating a small amount of the compound and observing the temperature range at which it melts. The observed melting point can then be compared to known literature values to assess the purity of the compound.

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As a result, gas's molecular weight is 44g/mol. It is the gas's (Carbon dioxide) molecular weight.

What is Molecular Weight?

The total atomic weights of the atoms in a molecule are measured by its molecular weight. To calculate stoichiometry in chemical equations and reactions, chemists employ molecular weight. M.W. or MW are two frequent abbreviations for molecular weight. Atomic mass units (amu), Daltons, or a unitless expression can be used to indicate molecular weight (Da).

The mass of the isotope carbon-12, which is given a value of 12 amu, serves as the reference point for defining both atomic weight and molecular weight. Because there are many carbon isotopes, the atomic weight of carbon is not exactly 12.

A mole of any gas at STP takes up a volume of 22.4l

at STP, a gas fills a volume of 2.24l

Calculating the quantity of moles of gas in step two

Consequently, the amount of gas in moles

= 0.1 moles

This is equivalent to carbon dioxide's molecular weight.

=44g/mol

As a result, gas's molecular weight is 44g/mol. It is the gas's (Carbon dioxide) molecular weight.

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Answer:

1 mole of MgO contains Avogadro's number of molecules which is 6.023×10^23

molecules.

0.5 mole of MgO will contain 0.5×6.023×10^23

=3.0115×10^23 molecules

Practical work refers to the art of conducting experiments in order to answer certain research questions.

In science, practical work refers to the art of conducting experiments in order to answer certain research questions. This could occur in a laboratory under controlled conditions or in the field.

In the physical sciences, most of the practical work is conducted in the laboratory under controlled conditions. However, some experiments in the biological sciences and most experiments in the social sciences are conducted outside the laboratory.

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When adding ice to a hot soup, it is generally recommended to use ice made from potable or drinkable water.

The water used to make the ice should be clean and free from any contaminants that could affect the taste or safety of the soup.

It is advisable to use filtered or purify water to make the ice to ensure that it is of good quality. This helps prevent any unwanted flavors or impurities from transferring to the soup.

Using tap water can also be acceptable if it meets the drinking water standards in your area and is considered safe for consumption. However, if you have concerns about the quality of your tap water, using filtered water is a safer option.

Ultimately, the goal is to add ice made from water that is safe and of good quality to avoid any negative impact on the taste or safety of the soup.

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Answer:

Under the concept of popular sovereignty, the people of each territory would decide whether or not slavery would be permitted.

Explanation:

hopes this help 3> D:

Answer: Na

Explanation:

on the left it says Na, and on the right it says Na2

The significance of polar and non-polar amino acids lies in their interactions within a protein structure. Polar amino acids are typically found on the surface of the protein, where they interact with water molecules and other polar molecules. Non-polar amino acids, on the other hand, are typically found in the interior of the protein, where they interact with other non-polar amino acids through hydrophobic interactions.

Amino acids are the building blocks of proteins, and they can be categorized as either polar or non-polar. Polar amino acids have a hydrophilic (water-loving) nature due to their polarity, while non-polar amino acids have a hydrophobic (water-fearing) nature due to their lack of polarity.

The balance between polar and non-polar amino acids is crucial in determining the overall structure and function of a protein. If there are too many polar amino acids in the interior of a protein, it may become unstable and unfold. Conversely, if there are too many non-polar amino acids on the surface of a protein, it may not be able to interact effectively with other molecules.

Overall, the significance of polar and non-polar amino acids lies in their ability to contribute to the stability and function of proteins. Understanding the properties of these amino acids is important in fields such as biochemistry and drug development.

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Answer:

True

Explanation:

The law of conservation of energy is a physical law that states energy cannot be created or destroyed but may be changed from one form to another. Another way of stating this law of chemistry is to say the total energy of an isolated system remains constant or is conserved within a given frame of reference.

Brainliest?

The correct option is option B, camouflage the chameleon from predators.

Chameleons belong to the reptile family of the animal kingdom, they are creatures with their own special abilities i.e. they can change the color of their body to match them with the surrounding.

This ability of theirs is very helpful for them to hunt for prey as they can camouflage in the environment the prey doesn't get the chance to recognize them as their potential threat and thus they get attacked. Chameleons generally hunt small insects like butterflies, ants, etc.

Another and the most important use of this ability is to hide from the potential threats or predators of the wild. It helps them to blend in with their environment and avoid detection by predators. For example, if a chameleon is in a green plant, it can change its skin color to green and become nearly invisible to predators.

This adaptation allows the chameleon to survive in its environment by remaining undetected, which is essential for its survival.

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Answer:

these micronutrients are not produced in our bodies and must be derived from the food we eat.

Explanation:

Vitamins and minerals are micronutrients required by the body to carry out a range of normal functions. However, these micronutrients are not produced in our bodies and must be derived from the food we eat. Vitamins are organic substances that are generally classified as either fat soluble or water soluble.

Answer:

evaporation

Explanation:

Answer:

Boiling

Explanation:

When a substance transitions from liquid to gas, it's called evaporation if it's on the surface, and boiling if it's all throughout the liquid.

Picture boiling water in a pot: it starts on the bottom, and the bubbles go toward the top. Evaporation starts on the surface.

Answer:

“GMOs have helped farmers reduce their environmental footprint by allowing them to use fewer inputs and enabling a shift to reduced tillage. These practices have led to less time spent on a tractor, less fuel used and fewer emissions.

Hope this helps!!!

Answer:

A

Explanation:

Cuz that's the answer for your question

2.0×10^5 C/mole  is his experimental value for faraday's constant if the student calculates that 800000 coulombs of charge were consumed in the production of the 4 moles of hydrogen

Q=nC

Q=charge

n=moles

C= faraday's constant

put values in equation

C=800000/ 4

C=200000=2.0×10^5 C/mole

The amount of electric charge needed to release one gram equivalent of any ion from an electrolytic solution is measured in faraday, also known as the faraday constant, a unit of electricity used in the study of electrochemical processes. It is named for the 19th-century English physicist Michael Faraday and equals 6.022140857 ×10^23 electrons, or 9.648533289 104 coulombs. It is used in electric solutions.

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