Dams change the flow of water on earth's surface. how could you model the way this change in flow affects earth's rocks and soil? what would you expect the model to show?

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

Answer:

3

Explanation:

The difference between the gas's initial and ultimate temperatures is roughly 2.481 times.

To determine how many times larger the initial temperature of the gas is compared to its final temperature, we can use the ideal gas law, which states that the pressure of an ideal gas is directly proportional to its temperature when the volume and the number of moles are constant.

The ideal gas law is given by:

PV = nRT

Where:

P is the pressure of the gas

V is the volume of the gas

n is the number of moles of the gas

R is the gas constant (8.314 J/(mol*K))

T is the temperature in Kelvin

Since the pressure is constant in this scenario, we can rewrite the ideal gas law as:

\(\begin{equation}\frac{V_1}{T_1} = \frac{V_2}{T_2}\)

Where:

V₁ is the initial volume of the gas

T₁ is the initial temperature of the gas

V₂ is the final volume of the gas

T₂ is the final temperature of the gas

Let's denote the initial temperature as T₁ and the final temperature as T₂. We can set up the following equation using the ideal gas law:

\(\begin{equation}\frac{V_1}{T_1} = \frac{V_2}{T_2}\)

Plugging in the given values:

V₁ = 16.75 L

V₂ = 6.75 L

\(\begin{equation}\frac{16.75}{T_1} = \frac{6.75}{T_2}\)

Cross-multiplying the equation:

\(\begin{equation}16.75 T_2 = 6.75 T_1 \\\\T_2 = \frac{6.75 T_1}{16.75}\)

Now, let's calculate how many times larger the initial temperature is compared to the final temperature:

\(\begin{equation}\frac{T_\text{initial}}{T_\text{final}} = \frac{T_1}{T_2}\)

Substituting the value of T₂:

\(\begin{equation}\frac{T_\text{initial}}{T_\text{final}} = T_1 \div \left( \frac{6.75 \times T_1}{16.75} \right)\)

Simplifying the equation:

\(\begin{equation}\frac{T_\text{initial}}{T_\text{final}} = \frac{16.75}{6.75}\)

Calculating the ratio:

\(\begin{equation}\frac{T_\text{initial}}{T_\text{final}} \approx 2.481\)

Therefore, the initial temperature of the gas is approximately 2.481 times larger than its final temperature.

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Answer:52!

Explanation:

Answer:

good electrical conductor

lustre in appearance

Answer:

Explanation:

Solution

verified

Verified by Toppr

Correct option is B)

HCl+NaOH→NaCl+H

2

​

O

In this chemical reaction, the molar ratio is 1:1 between HCl and NaOH.

So, moles of HCl = moles of NaOH

M

HCl

​

× Volume of HCl = M

NaOH

​

× Volume of NaOH

M

HCl

​

=

volumeofHCl

M

NaOH

​

×volumeofNaOH

​

M

HCl

​

=

50.00ml

25.00ml×1.00M

​

M

HCl

​

=0.50MHCl

So, the concentration of HCl is 0.50M.

Video Explanation

Answer:

A homologous series is a family of hydrocarbons with similar chemical properties who share the same general formula. We will look at three hydrocarbon series: alkanes, alkenes and the cycloalkanes. Hydrocarbons are compounds that contain only hydrogen and carbon.

Explanation:

Answer: The part I think you messed up on is the atoms not all of them have 0 and 1. Sodium Chloride has 2 atoms. Other than that it looks amazing! Hope this helps!

Answer:

true

Explanation:

Answer:

It is A

Explanation:

here you go

Ensure that it answers a question about cause and effect. Hence, option A is correct.

Experimental design is a concept used to organize, conduct, and interpret results of experiments in an efficient way, making sure that as much useful information as possible is obtained by performing a small number of trials.

Thus, when developing an experimental design, the action that would improve the quality of the results is to ensure that it answers a question about cause and effect.

Hence, option A is correct.

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Chromosomes are formed inside the nucleus of a cell. They carry genetic information and are responsible for traits and characteristics passed down from one generation to the next. Chromosomes play a crucial role in cell division, and chromosomal abnormalities can lead to a variety of genetic disorders.

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Answer:

\(\huge\fbox{Answer ☘}\)

Yes,a plane mirror can form a real image. A plane mirror can form a real image only for a virtual object. These converging rays of incidents light after reflection intersect at a point to give a real image.

hope helpful~

Plane mirrors always produce virtual images, because they never focus light into a single converging point.

Hence it does not produce real object or image

As power of the plane mirror is zero, hence, it neither converges nor diverges the rays.

Answer:

D

Explanation:

the correct answer is D

The balanced equation :

2KOH+CO₂⇒K₂CO₃+H₂O

Equalization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:

1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.

2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product

3. Select the coefficient of the substance with the most complex chemical formula equal to 1

Reaction

KOH+CO₂⇒K₂CO₃+H₂O

aKOH+bCO₂⇒K₂CO₃+cH₂O

K, left=a, right=2⇒a=2

H, left=a, right=2c⇒a=2c⇒2=2c⇒c=1

O, left=a+2b, right=3+c⇒a+2b=3+c⇒2+2b=3+1⇒2b=2⇒b=1

the equation becomes :

2KOH+CO₂⇒K₂CO₃+H₂O

Answer:

amps is how hard it is for the volts to get through hope this helped

Explanation:

Answer:

respritory and circulatory systems

lungs and heart

Explanation:

Answer: Freeze-thaw weathering and Chemical Weathering

Explanation: I can't see the options, but I'll give it a go.

Physical weathering occurs when rocks are broken down into smaller pieces without changing their composition. The alternating freeze-thaw cycles in Lansing during the winter season contribute to the physical weathering of the sandstone cliffs. Water seeps into cracks and crevices in the rocks and then freezes when temperatures drop below freezing point. When water freezes, it expands, causing the rocks to crack and break apart. This process is called freeze-thaw weathering. Evidence for physical weathering can be seen in the form of small cracks and fractures on the surface of the sandstone cliffs.

Chemical weathering occurs when rocks are broken down by chemical reactions. In Lansing, the water that seeps into the sandstone cliffs contains dissolved iron, copper, and manganese. Over time, these minerals react with the sandstone, causing it to break down and dissolve. The dissolved minerals then stain the surface of the sandstone cliffs, giving them their characteristic red, green, and black stripes. Evidence for chemical weathering can be seen in the staining on the surface of the sandstone cliffs and the presence of dissolved minerals in the water that flows from the cliffs.

The blue-black color appearing in the reaction mixture is caused by a complex between A and B. This experiment makes use of the relationship between temperature and a reaction rate in the Arrhenius equation in order to determine the activation energy of the reaction.

a) The measurement that is related to the rate constant (k) is the reaction rate itself. By measuring the rate at different temperatures, we can observe how the rate changes as the temperature is varied. This allows us to indirectly determine the value of the rate constant.

b) In the rate law, the rate constant (k) represents the proportionality constant between the concentrations of the reactants and the rate of the reaction. It is the rate constant that determines the speed at which the reaction proceeds. The specific value of k in the rate law depends on the specific reaction and is determined through experimental measurements.

In summary, a) the rate of the reaction is measured to indirectly determine the rate constant (k), and b) the rate constant (k) represents the proportionality constant in the rate law that relates reactant concentrations to the rate of the reaction.

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The ester can polymerize if both the acid and the alcohol have different functional groups.

A molecule is the smallest unit of any material that is composed of one or more elements and is capable of existing independently while maintaining all of the substance's physical and chemical properties. Further atom division occurs within molecules. For instance, the symbols for the oxygen atom and molecule are O and O2, respectively.

The smallest component of a substance which possesses both its chemical and physical characteristics. One or even more atoms make up molecules.

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Answer: 1.76 M

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\(\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in L)}}\)     .....(1)

Molarity of \(NaNO_3\) solution = 0.35 M

Volume of solution = 125 mL

Putting values in equation 1, we get:

a) \(0.35M=\frac{\text{Moles of}NaNO_3\times 1000}{125ml}\\\\\text{Moles of }NaNO_3=\frac{0.35mol/L\times 125}{1000}=0.044mol\)

1 mole of \(NaNO_3\) contains = 1 mol of \(NO_3^-\)

Thus \(0.044mol\) of \(NaNO_3\) contain= \(\frac{1}{1}\times 0.044=0.044\) mol of \(NO_3^-\)

b) \(1.1M=\frac{\text{Moles of}Mg(NO_3)_2\times 1000}{450ml}\\\\\text{Moles of }Mg(NO_3)_2=\frac{1.1mol/L\times 450}{1000}=0.495mol\)

1 mole of \(Mg(NO_3)_2\) contains = 2 mol of \(NO_3^-\)

Thus \(0.495mol\) of \(Mg(NO_3)_2\) contain= \(\frac{2}{1}\times 0.495=0.99\) mol of \(NO_3^-\)

Total \([NO_3^-]=\frac {\text {total moles}}{\text {total volume}}=\frac{0.044+0.99}{0.575L}=1.76M\)

Thus \([NO_3^-\) after mixing is 1.76 M

Answer:

First

divide each element by its Molecular Mass to get their respective moles

Then Divide through by the lowest of the moles

You'll have the ratio of Carbon Hydrogen and Oxygen to be

C2H3O

Given Molecular Mass=184.27

C2H3On=184.27

n(12x2 + 1x3 + 16) =184.27

Evaluating this... You'll have n=4.3

Pls check if you assigned the correct value to each element

Answer:

300.02°F

Explanation:

To convert 421.9.9 Kelvin to Celsius subtract 273 from 421.9 Kelvin

421.9-273=148.9°C

To convert 148.9°C to °F use the formula (°C x 9/5) +32

That is:

(148.9°C x 9/5) + 32

=300.02°C

To make a 48% solution from 25 g of solute, you would need approximately 52.08 mL of solvent.

To calculate the volume of solvent required, we need to consider the mass percent of the solution. The mass percent is defined as the ratio of the mass of solute to the total mass of the solution, multiplied by 100. In this case, the mass percent is given as 48%.

To find the volume of solvent, we can set up a proportion using the mass percent. Let's assume the total volume of the solution is V mL. We can set up the following equation:

(25 g)/(V mL) = (48 g)/(100 mL)

Cross-multiplying and solving for V, we get:

25V = 48 * 100

V = (48 * 100)/25

V ≈ 192 mL

Therefore, you would need approximately 192 mL of the solvent to make a 48% solution from 25 g of solute.

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Answer:

Positive: Save fuel and reduces greenhouse gas

Negative: Harmful to human and animal health ( underwater animals), Hurts the food chain

Explanation:

I got it from a video. Hopefully it helps you.

Answer:

The correct answer is liquid B.

Explanation:

Latent heat of vaporization also known as the latent heat of evaporation. This latent heat transforms the particles of liquid into a gas without affecting its temperature. For example, the latent heat of evaporation for water is 40.8 kJ per mole, that is, 40.8 kJ per mole of heat is needed to transform water into vapor at 373 K.  

It is known that latent heat of evaporation of a liquid is directly proportional to the cooling effect it generates, that is, more the latent heat of evaporation more will be its cooling effect. Thus, it is clear that liquid B will show the more cooling effect as the latent heat of evaporation of liquid B is more in comparison to liquid A. Thus, more heat will be captivated by liquid B and will generate more cooling effect in comparison to liquid A.  

An increase in blood carbon dioxide content causes hemoglobin to release more oxygen molecules. Details about hemoglobin can be found below.

Hemoglobin is the iron-containing substance in red blood cells that transports oxygen from the lungs to the rest of the body.

Hemoglobin consists of a protein (globulin) and heme (a porphyrin ring with an atom of iron at its centre). This justifies its oxygen affinity.

However, excess carbon dioxide in the blood causes blood pH to decrease, resulting in hemoglobin proteins releasing more oxygen molecules.

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From the given conditions in the question, it is evident that a protein has been made from the polymerization of amino acids.

Amino acids are defined as the substances which are considered to be the monomers of proteins.Every amino acid has the same structure consisting of a central carbon which is bonded to an amino group , carboxyl group and a hydrogen.

Each amino acid also has another atom or a group of atoms bonded to the alpha carbon which are also known as the R group or the variable group of the side chain.There are 20 common amino acids present in natural proteins and each amino acid has the same backbone.

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we can calculate ΔG°rxn for the given reaction:

3 N2O(g) + 3 NO2(g) → 9 NO(g)ΔG°rxn = nΔG°f(products) - mΔG°f(reactants)ΔG°rxn = 9 × 174.3 kJ/mol - 3 × 82.1 kJ/mol - 3 × 51.3 kJ/molΔG°rxn = 1568.7 kJ/mol - 246.3 kJ/mol - 153.9 kJ/molΔG°rxn = 1168.5 kJ/mol

We know that

1 kJ = 1000 J Thus, ΔG°rxn in kJ = - 1168.5 kJ = - 1.1685 x 10^6 J

Therefore, the correct option is

B) 69 kJ.

The correct answer is option B) 69 kJ for the given question which asks to calculate ΔG°rxn for the following reaction:

3 N2O(g) + 3 NO2(g) → 9 NO(g).

Explanation:Given that,

ΔG°rxn = -23.0 kJ for the reaction

N2O(g) + NO2(g) → 3 NO(g)

It is important to remember the following relationships:

ΔG°rxn = nΔG°f(products) - mΔG°f(reactants)ΔG°f(products) = - ΔH°f(products)ΔG°f(reactants) = - ΔH°f(reactants)n, m = stoichiometric co

efficiency Thus, we can calculate ΔG°f for the products and reactants using the above relationships as shown:

3 NO(g): ΔG°f = - (-174.3 kJ/mol) = 174.3 kJ/mol N2O(g): ΔG°f = - 82.1 kJ/mol NO2(g): ΔG°f = - 51.3 kJ/mol

Now, we can calculate ΔG°rxn for the given reaction:

3 N2O(g) + 3 NO2(g) → 9 NO(g)ΔG°rxn = nΔG°f(products) - mΔG°f(reactants)ΔG°rxn = 9 × 174.3 kJ/mol - 3 × 82.1 kJ/mol - 3 × 51.3 kJ/molΔG°rxn = 1568.7 kJ/mol - 246.3 kJ/mol - 153.9 kJ/molΔG°rxn = 1168.5 kJ/mol

We know that

1 kJ = 1000 J Thus, ΔG°rxn in kJ = - 1168.5 kJ = - 1.1685 x 10^6 J

Therefore, the correct option is

B) 69 kJ.

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The change in Gibb's energy for the given reaction 3 N₂O(g) + 3 NO₂(g) → 9 NO(g) is -69.0 kJ.

The given reaction is:

N₂O(g) + NO₂(g) → 3 NO(g) ΔG°rxn = -23.0 kJ

To calculate the ΔG°rxn for the reaction:

3 N₂O(g) + 3 NO₂(g) → 9 NO(g)

ΔG°rxn is an extensive property, meaning it is proportional to the stoichiometric coefficients in the balanced equation. Since the coefficients of the reaction are multiplied by 3, the ΔG°rxn will also be multiplied by 3.

ΔG°rxn = (ΔG°rxn for the given reaction) × (stoichiometric coefficient multiplier)

ΔG°rxn = (-23.0 kJ) × 3

ΔG°rxn = -69.0 kJ

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