what happens to the concentration (mol/l) of a species in a solution when water is added to it? what happens to the number of moles of that species when water is added to it? g

Answer:

benefits: can help reduce waste in land fills, and promotes reusability (turned into different products)

drawbacks: can be much more expensive to salvage than to just throw it in a landfill, and most of the time products cannot be recycled effectively due to its material.

Answer:

1.0 joules

Explanation:

Violet light has a frequency of 410,000 hertz and an energy of 1.0 joules. Now we can compare the energy of photons of violet light with those of red light. Photons of violet light have more energy than photons of red light.

The volume of the balloon at the center of the typhoon exists at 41.7L.

Since no temperature changes were given, it exists supposed to be constant.

Thus, Boyle's law which defines the relationship between pressure and volume exists utilized to define the new volume at the center of Typhoon Odessa.

Mathematically, Boyle's law notes that;

P1V1 = P2V2

Assuming 1 atm = 1 bar

1 mbar = 0.001 atm

40 mbar = 0.040 atm

Given: P1 = 1.0 atm

V1 = 40.0 L

P2 = 1 atm - 0.040 atm = 0.960 atm

Using P1V1 = P2V2

V2 = P1V1/P2

Substitute the values in the above equation, and we get

V2 = 1.0 \(*\) 40.0 / 0.96

The value of V2 = 41.67L

Therefore, the volume of the balloon at the center of the typhoon exists at 41.7L.

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The complete question is:

If a small weather balloon with a volume of 40.0 L at a pressure of 1.00 atmosphere was deployed at the edge of Typhoon Odessa, what was the volume of the balloon when it reached the center?

The severity of a tropical storm is related to the depressed atmospheric pressure at its center. In August 1985, Typhoon Odessa in the Pacific Ocean featured maximum winds of about 90 mi/hr and pressure that was 40.0 mbar lower at the center than normal atmospheric pressure. In contrast, the central pressure of Hurricane Andrew (pictured) was 90.0 mbar lower than its surroundings when it hit south Florida with winds as high as 165 mi/hr.

As a result, this cleanser's bottle contains 14.8 percent HCl by mass.

To get the weight percent of the a component of a compound, multiply this result by 100 after dividing the mass of element for 1 mole of a complex by the cell's molar mass.

         Mass percent = \(\frac{Mass of component}{Mass of solution}\) × 100 %

Mass of component = 135 g , Mass of solution = 775 g

Mass percent = \(\frac{135}{775+135}\) × 100 %

Mass percent = (135/910) × 100 %

Mass percent = 14.8

Thus, required mass percentage is 14.8

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Answer:

ccccccccccccccccccccccccccccccccccc

choose the pair of terms that completes this sentence:

hydroxyl is to alcohol as amino is to amine.

Amino acids are the building blocks of proteins and are found in a variety of natural and man-made sources. Most amino acids are naturally produced  by plants and animals, but some are  synthesized in the laboratory.Unnatural amino acids are  used  to study protein structure and function  or to create new proteins with desired properties.

Amino acids are divided into three groups:Essential amino acids,nonessential amino acids and conditional amino acid.

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The following reaction involves (1) C–O  bond cleavage of the alcohol molecule.

When extreme circumstances and an abundance of hydrogen halides are present, the C-O bond in ethers can be broken. Two molecules of alkyl halide are produced as a byproduct of the process involving dialkyl ether. Because of the increased strength of the aryl-oxygen bond, the alkyl-oxygen bond in alkyl aryl ethers is the point of cleavage. The reaction results in the production of phenol and alkyl halide.

As we can see in the given mechanism, after the first step, an intermediate C-O bond is broken by the Br⁻ ion in alcohol, which is an incoming ion via the SN2 mechanism. At this stage, the O-H bond is not broken; only the C-O bond is broken.

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When the enzyme is abundant Option A.increasing the concentration of the reactants will increase the reaction rate.

option A is correct

Enzyme awareness increasing enzyme awareness will speed up the reaction, as long as there may be a substrate to be had to bind to. once all the substrate is sure, the reaction will now not speed up, in view that there can be nothing for added enzymes to bind to.

PH is a chief element affecting the interest of enzymes. The ionization of amino acid molecules and atoms takes place while the pH is altered, thereby affecting the shape and form of proteins and therefore disrupting their activities.

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The mass of carbon dioxide produced upon the complete combustion of 23.7 L of propane is  44.0352 kg.

The balanced equation for the combustion reaction of propane is: C3H8 + 5O2 → 3CO2 + 4H2O

To find the mass of CO2 produced, we first need to find the mass of propane in the tank. We can do this using the density of liquid propane and the volume of the tank:
mass of propane = density × volume
mass of propane = 0.621 g/mL × 23.7 L × 1000 mL/L
mass of propane = 14717.7 g

Next, we can use the balanced equation to find the moles of propane and carbon dioxide:
moles of propane = mass of propane / molar mass of propane
moles of propane = 14717.7 g / 44.1 g/mol
moles of propane = 333.6 mol

moles of carbon dioxide = moles of propane × (3 mol CO2 / 1 mol C3H8)
moles of carbon dioxide = 333.6 mol × 3 mol CO2 / 1 mol C3H8
moles of carbon dioxide = 1000.8 mol

Finally, we can use the molar mass of carbon dioxide to find the mass of carbon dioxide produced:
mass of carbon dioxide = moles of carbon dioxide × molar mass of carbon dioxide
mass of carbon dioxide = 1000.8 mol × 44.0 g/mol
mass of carbon dioxide = 44035.2 g

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Answer:

# of neutrons

Explanation:

its how isotope is defined

:

Select the correct answer. Which statement is always true about a reversible chemical reaction? A. The concentration of reactants is higher than that of the products. B. The products can form reactants, and the reactants can form products. C. The concentrations of reactants and products are not constant. D. The concentration of the products is higher than that of the reactants.

Answer:

number B.

Answer:

Plato / Edmentum  -  B

Explanation:

Answer:

I don't know I'm sorry I will tell you another

Answer:

The dispersed particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas. Because the dispersed particles of a colloid are not as large as those of a suspension, they do not settle out upon standing.

Explanation:

Answer:

Examples of these physical changes are melting ice-cream, or boiling water as well as freezing it. Adding dye to water is also a physical change since the chemical compounds remain the same, it is only the physical appearance that changes.

Possible reasons for chemical changes are the formation of a precipitate (solid), or formation of gas (bubbling) as well as release of heat or light or release of odor.

The attributes of the genetic code include all of the following except B. Each codon specifies more than one amino acid.

A. Each codon consists of 3 nucleotides: This is a correct attribute of the genetic code. Codons are made up of three consecutive nucleotides, which form the basic unit of the genetic code.

B. Each codon specifies more than one amino acid: This is incorrect. Each codon typically specifies only one amino acid. However, there are some exceptions called "ambiguous codons" where a single codon can code for more than one amino acid, but they are relatively rare.

C. Codons are non-overlapping: This is a correct attribute of the genetic code. Codons are read sequentially and are not overlapping. Each codon starts at a specific position in the DNA or mRNA sequence.

D. Most amino acids are specified by more than one codon: This is a correct attribute of the genetic code. With a few exceptions, most amino acids are encoded by multiple codons. This redundancy provides some level of error tolerance and allows for variations in the DNA sequence without affecting the encoded protein.

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Answer:

Yes, they are.

Explanation:

The United States is one of these nuclear superpowers, making the ethical issues associated with these weapons critical and relevant. ... Most research across disciplines unanimously agrees that it is immoral to detonate an atomic weapon due to both short and long-term catastrophic effects.

In fact, some scholars have concluded that it is therefore morally wrong to act in ways that produce these outcomes, which means it is morally wrong to engage in nuclear warfare.

Answer:

NO not at all.

Explanation:

After reading the accounts of people who survived the bomb in Hiroshima and Nagasaki in 1945 during World War II, I was horrified just reading the testimonies. Almost every single survivor described the skinless and bloated bodies they had seen everywhere. Inosuke Hayasaki, a surivor of the bombing, noticed one of his classmates, among many other citizens, pleading for water. When he tried listening for his heartbeat, his "skin slipped right off". Bombs are used in war so the other side will surrender. Bombs are aimed at "enemies" as if every being is an object to destroy. So no, bombing----let alone nuclear bombing----is ethical.

Answer:

The density is 0.0187 g/L

Explanation:

First thing to do here is to calculate the Volume of 1 mole of CO2 using the ideal gas equation

Mathematically;

PV = nRT

thus V = nRT/P

what we have are;

n = 1 mole

R is the molar has constant = 0.082 L•atm•mol^-1•K^-1

P is the pressure = 0.0079 atm

T is temperature = 227 K

Substituting these values, we have;

V = nRT/P = (1 * 0.082 * 227)/0.0079

V = 2,356.20 dm^3

This means according to the parameters given in the question, the volume of 1 mole of carbon iv oxide is 2,356.20 dm^3

But this is not what we want to calculate

What we want to calculate is the density

Mathematically, we can calculate the density using the formula below;

density = molar mass/molar volume

Kindly recall that the molar mass of carbon iv oxide is 44 g/mol

Thus the density = 44/2356.20 = 0.018674136321195 which is approximately 0.0187 g/L

Answer:

3400g

Explanation:

3.4×1000

3400g -_-

Answer:

The same chemical properties

Explanation:

Different masses of water at the same temp and pressure will have different volumes and the same empirical formulas and the same chemical properties

At STP, a 50.-gram sample of H2O(l) and a 100.-gram sample of H2O(l) have  the same chemical properties.

The temperature, volume and other physical properties of a sample may vary with the mass of substance present.

However, the chemical properties of a substance do not change irrespective of the amount of substance present. Even the smallest mass of water still retains all the chemical properties of water.

Therefore, at STP, a 50.-gram sample of H2O(l) and a 100.-gram sample of H2O(l) have  the same chemical properties.

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Answer:

A Glucose C6H12O6 is a covalent compound while NaCl sodium chloride is a ionic compound.

B Stronger molecular forces are present in NaCl because ionic bond is stronger than covalent bond.

C melting point allow us to predict the strength of intermolecular forces

High melting point stronger molecular forces and vice versa.

Explanation:

The correct response is C) Hydrophobic residues are normally on the inside and hydrophilic residues are on the outside.

According to Merriam-Webster, the word "hydrophilic" means "of, related to, or having a high affection for water." In essence, this means having the capacity to mix easily, dissolve, or bind to water. The 'hydrophilicity' of a molecule or surface refers to how much or how little it draws water. Sugar, salt, starch, and cellulose are a few of the most typical examples of hydrophilic compounds. Aluminum foil is one example of a hydrophilic metal surface. Lotus leaves are extremely hydrophobic and cause water to bead because of their surface structure. Hydrophobic surfaces tend to reject water, forcing it to form droplets.

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Which of the following is CORRECT when considering the tertiary structure of globular proteins?

A) All parts of the proteins can be classified as helix, β sheet or turns.

B) The amino acid proline never occurs in a region where the polypeptide chain bends or turns.

C) Hydrophobic residues are normally on the inside and hydrophilic residues are on the outside.

D) β sheets cannot be twisted or wrapped into barrel structures.

E) None of the above.

The correct answer is C. When magnesium and nitrogen react, they form a compound with the formula Mg3N2. In this compound, magnesium loses 2 electrons to form Mg2+ ions, while nitrogen gains 3 electrons to form N3- ions.

The lattice of the compound will be composed of Mg2+ and N3- ions, not Mg2- and N3+ ions as stated in option A. Option B is incorrect because the reaction between magnesium and nitrogen is actually exothermic, not endothermic. This means that energy is released during the reaction rather than absorbed. Option D is also incorrect because the melting point of Mg3N2 is actually lower than that of NaCl. This is due to the fact that Mg3N2 has a layered structure, which makes it easier for the layers to slide past each other and therefore melt at a lower temperature. In conclusion, option C is the correct answer because it accurately describes the electron transfer that occurs between magnesium and nitrogen during the formation of their compound.

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Answer:

When solid oxalic acid dissolved in water, it dissociates ,  H+ - ions is formed, so acidic properties can be observed.

Explanation:

When solid oxalic acid dissolved in water, it dissociates ,  H+ - ions is formed, so acidic properties can be observed.

C2H2O4 ----> \(H^{+}\) + \(C_{2}HO_{4}^{-}\)

\(C_{2}HO_{4}^{-} ----> H^{+} + C_{2}O_{4}^{2-}\)

When oxalic acid is solid, there are no free moving H+ - ions , so acidic properties can not be observed.

Yes, The car will accelerate if its velocity changes in magnitude, in direction, or both. If a car is traveling at a constant speed of 35 m/s, it can be accelerating if its direction of motion is changing.

There are 50% chances of the offspring being heterozygous for tall plant.

Crossing homozygous short tt plants with heterozygous tall Tt plants yields short to tall plants in a 1:1 ratio. So the seed has a 50% chance of growing into a large plant.

Under such conditions, the dominant allele is always expressed and the recessive allele is masked. In this example, the size allele is dominant, so the plant grows.

About 80% of an individual's height is determined by differences in their inherited DNA sequences.

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Answer: It could burn or freeze anything

Explanation:

Answer:

The carcinogen (U.V.) helps to stabilize the formation of clouds and maintain life in ecosystem.

If drastic changes were made to the radiation of sun, it will lead to ecological imbalance such as changes in O3 layer, etc and surely, the last day (D-day, what we majorly call) will come!

Answer:

C

Explanation:

Primary succession occurs when pioneer species move into an area that has no plants. This happens because of Mosses and lichens that can grow on rocky surfaces and the correct option is option B.

Primary succession refers to the establishment of a community in an uninhabited area such as rocks.

It is a type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat.

Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community.

Therefore, Primary succession occurs when pioneer species move into an area that has no plants. This happens because of Mosses and lichens that can grow on rocky surfaces and the correct option is option B.

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"the number of ions produced by one formula unit of the electrolyte," refers to the van't Hoff factor (i) in an ideal solution of a strong electrolyte. It represents the extent of dissociation of the electrolyte into ions.

In an ideal solution of a strong electrolyte, the van't Hoff factor (i) represents the number of ions that are produced when one formula unit of the electrolyte dissociates completely in the solution. It is a measure of the extent of dissociation of the electrolyte.

For example, for a strong electrolyte such as sodium chloride (NaCl), when it dissolves in water, it completely dissociates into sodium ions (Na+) and chloride ions (Cl-). In this case, the van't Hoff factor (i) would be 2 because one formula unit of NaCl produces two ions (Na+ and Cl-).

Similarly, for other strong electrolytes, the van't Hoff factor (i) can be determined based on the number of ions produced per formula unit. It is important to note that for non-electrolytes or weak electrolytes, the van't Hoff factor (i) is typically less than 1, indicating partial dissociation or no dissociation in the solution.

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Answer: I don’t think the answer is A or C. Maybe B.

The word chemosynthesis means

the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

Explanation:

Answer:

Mechanical energy is energy that results from movement or the location of an object. Mechanical energy is the sum of kinetic energy and potential energy.

Explanation:

Nuclear energy is energy resulting from changes in the atomic nuclei or from nuclear reactions.

Example: Nuclear fission, nuclear fusion, and nuclear decay are examples of nuclear energy. An atomic detonation or power from a nuclear plant are specific examples of this type of energy.