Find the temperature in a bar of silver of length 10 cm and constant cross section of area (density , thermal conductivity , specific heat that is perfectly insulated laterally, with ends kept at temperature and initial temperature , where f(x) °C 0°C 0.056 cal>(g °C) 10.6 g>cm3 1.04 cal>(cm sec °C) 1 cm2 u (x, t)

Answer: Handwashing. It is estimated that washing hands with soap and water could reduce diarrheal disease-associated deaths by up to 50% 1. Researchers in London estimate that if everyone routinely washed their hands, a million deaths a year could be prevented 2.

Explanation:

The frequency of a red laser that has a wavelength of 676 nm would be 4.43 x \(10^{14\) hertz.

The frequency and wavelength of a wave are related by the following equation:

λf = c

Where λ is the wavelength of the wave in meters, f is the frequency in Hertz, and c is the speed of light in a vacuum.

in this case, λ = 676 nm = 6.76 x \(10^{-7\) m

c = 299,792,458 m/s

Making f the subject of the formula:

f = c/λ

  = 299,792,458/6.76 x \(10^{-7\)

  = 4.43 x \(10^{14\) hertz

In other words, the frequency of a red laser that has a wavelength of 676 nm would be 4.43 x \(10^{14\) hertz.

More on waves can be found here: https://brainly.com/question/29334933

#SPJ1

Answer:

B. The atoms are arranged in a rigid structure.

Explanation:

Because the entropy of solids depends on the structure of the atoms, a rigid structure has less randomness = less entropy. So, the answer is B.

Answer:

b

Explanation:

a p e x :)

The resulting solution of 0.010 mol of NaClO4(s) dissolved in 0.100 M HClO4 would not be a buffer because a buffer requires the presence of a weak acid and its conjugate base or a weak base and its conjugate acid to resist changes in pH.

To create a buffer solution, it is necessary to have a weak acid and its conjugate base or a weak base and its conjugate acid present in the solution. These components allow the buffer to resist changes in pH by undergoing reversible reactions and maintaining a relatively stable pH.

In the given scenario, NaClO4 and HClO4 are both strong electrolytes. They dissociate completely in water, resulting in the formation of Na+ and ClO4- ions from NaClO4 and H+ and ClO4- ions from HClO4. Since HClO4 is a strong acid, it will fully ionize to produce H+ ions, making it incapable of acting as a weak acid.

Without the presence of a weak acid and its conjugate base or a weak base and its conjugate acid, the resulting solution does not meet the criteria to be considered a buffer. Therefore, the proposed solution of dissolving NaClO4(s) in HClO4 would not form a buffer.

learn more about buffer solution Refer: https://brainly.com/question/30332096

#SPJ11

Answer:

A. water H2O, everything else is a single element C,Fe&Cu

Explanation:

According to specific heat capacity, when  3.0 kg of water is cooled from 80.0°C to 10.0°C 882 J of energy is lost.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT,substitution of values gives Q= 3×4.2×20=882 J.

Learn more about specific heat capacity,here:

https://brainly.com/question/1105305

#SPJ1

Answer:

urethra

Explanation:

Answer:

0.00714 g

Explanation:

We know that the volume of one mole of a substance is 22400 cm^3

Thus;

1 mole of sulphur occupies 22400 cm^3

x moles of sulphur occupies 5.0 cm3

x = 5.0 cm3 * 1 mole/22400 cm^3

x = 2.23 * 10^-4 moles

Molar mass of sulphur = 32 g/mol

Mass of sulphur = 2.23 * 10^-4 moles * 32 g/mol

Mass of sulphur = 0.00714 g

The conjugate acid of azide is hydrazoic acid (HN3) and the balanced equation for the reaction of azide with water can be written as follows: N3- + H2O ⇌ NH2- + OH-

N3- + H2O ⇌ NH2- + OH-

In this equation, azide (N3-) acts as a base by accepting a proton (H+) from water, forming the conjugate acid of azide, NH2-, and hydroxide ions (OH-) as the conjugate base of water.

Labeling the components:

Acid: H2O (water)

Base: N3- (azide)

Conjugate acid: NH2- (hydrazoic acid)

Conjugate base: OH- (hydroxide ion)

When azide reacts with water, it acts as a base by accepting a proton from water.

The azide ion (N3-) accepts a proton to form the conjugate acid, NH2-, while water donates a proton to become hydroxide (OH-). The reaction is reversible because NH2- can also donate a proton to water, regenerating the azide ion.

Sodium azide (NaN3) when dissolved in water, produces Na+ and N3- ions. The azide ion acts as a base and its conjugate acid is hydrazoic acid (HN3).

The balanced equation for the reaction of azide with water shows the transfer of a proton from water to azide, resulting in the formation of hydrazoic acid and hydroxide ions.

To learn more about acid, visit    

https://brainly.com/question/12584785

#SPJ11

An example correctly describing explicit evidence supporting epigenetic traits as heritable is DNA methylation.

The epigenome can be impacted by environmental factors like a person's nutrition and exposure to contaminants. When cells divide, epigenetic alterations can be preserved from cell to cell and, in some situations, passed down through the generations. DNA methylation is a frequent epigenetic alteration type.

DNA methylation is an epigenetic modification, meaning it affects DNA without changing its sequence in any way. It modifies a gene's expression during cell differentiation and brings about a heritable alteration. Other potential environmental stressors that can alter epigenetic status include chemical and xenobiotic compounds in water or the atmosphere.

To know more about epigenome, refer to the following link:

https://brainly.com/question/16319638

#SPJ4

None of these answer choices are correct. The correct valuation for available-for-sale securities is at fair value, not amortized cost.

Available-for-sale securities are reported on the balance sheet at fair value, with unrealized gains or losses recognized in other comprehensive income. Trading securities are also valued at fair value, but the changes in fair value are recognized in the income statement as gains or losses. Held-to-maturity securities, on the other hand, are valued at amortized cost. They are reported on the balance sheet at their initial cost and subsequently adjusted for amortization of any premiums or discounts, as well as interest income or expense. Therefore, none of the given answer choices accurately represent the correct valuation method for available-for-sale, trading, or held-to-maturity securities.

Learn more about correct valuation here;

https://brainly.com/question/14294197

#SPJ11

Answer:

safety shower

Explanation:

its on his body, not his eyes, and fire safety wont help here.

The mutated amino acid at position 229 is arginine (Arg), and its substitution can potentially disrupt the 3D structure and alter the function of the protein due to changes in side chain properties and interactions.

Structure of the Amino Acids:

The wild-type amino acid at position 229 is not specified, so the structure cannot be provided.

The mutated amino acid is arginine (Arg), which has a side chain containing a positively charged guanidinium group.

Importance of the Position:

The specific position 229 in the protein sequence may be functionally significant, such as being involved in protein-protein interactions, binding sites, catalytic activity, or structural stability.

Without detailed knowledge of the protein, its function, and its structural context, it is difficult to determine the exact importance of this specific position.

Effects of the Mutation on Structure and Function:

The substitution of an amino acid at position 229 from the original to arginine can have various effects on protein structure and function.

Arginine's larger and positively charged side chain may introduce steric clashes or alter electrostatic interactions within the protein structure.

The mutation can potentially disrupt local or global protein folding, stability, or conformational changes, affecting its overall 3D structure.

The functional consequences of the mutation depend on the specific role of the amino acid at position 229, which can include changes in protein-protein interactions, enzymatic activity, substrate binding, or signal transduction pathways.

It is crucial to analyze the protein's structural context, available experimental data, and computational modeling techniques to gain a more accurate understanding of the specific effects of the mutation on the protein's structure and function in the given context.

Learn more about Amino Acids from the given link:

https://brainly.com/question/31872499

#SPJ11

Therefore, an increase in temperature is expected to have a positive effect on the electrical conductivity of bismuth, but a negative effect on the electrical conductivity of antimony and tellurium.  

(a) Antimony - Conductivity increases.

(b) Tellurium - Conductivity increases.

(c) Bismuth - increases.

The electrical conductivity of a substance depends on various factors, including temperature. In the case of antimony, as the temperature increases, the thermal vibrations of the atoms increase, which leads to a decrease in the mobility of the charge carriers, resulting in decreased conductivity. Conversely, in the case of tellurium, as the temperature increases, the number of free charge carriers increases, which leads to an increase in conductivity. In the case of bismuth, the increase in temperature has a minimal effect on its conductivity as it is a poor conductor of electricity, to begin with.

In summary, the effect of temperature on electrical conductivity depends on the specific substance. Antimony conductivity decreases with an increase in temperature, tellurium conductivity increases, and bismuth's conductivity is minimally affected.

To learn more about Conductivity, visit here:

brainly.com/question/24943129

#SPJ11

In yeast, the reaction is eleventh order:Rate = K[ enzyme ] [isocitrate]⁴[AMP]²[NAD⁺]m [Mg²⁺]². The order with respect to NAD⁺ is 2.

The citric acid cycle is also called the Krebs cycle. This is the main source of energy that happens in aerobic conditions.

The coefficient that is raised to the active concentration of the reactants is the order in the mass action law. It is determined experimentally and can be fractional, positive, negative, or zero.

Each reactant's order, which is increased to its power in the rate law, is added to determine the order of the entire reaction.

The overall rate = 11

Rate of overall reaction = 1 + 4 + 2 + m + 2 = 11

9 + m = 11

m = 2

Thus, the order with respect to NAD⁺ is 2.

To learn more about citric acid cycle, refer to the below link:

https://brainly.com/question/14438945

#SPJ4

When an element can both reduce and oxidize, it is said to be "disproportionate." This indicates that it must have at least two oxidation states: a decreased state and an oxidized state.

The element undergoing the disproportionation reaction must have at least three distinct oxidation states, and it must be less stable in one oxidation state from which it can be both oxidized and reduced to a relatively more stable oxidation.

Disproportionation occurs when one oxidation state becomes less stable in comparison to other oxidation states, either lower or higher.

Learn more about  disproportionation reaction :

brainly.com/question/13683302

#SPJ4

The molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp, sp², and sp³ is a) C₅H₆.

Hybridization is the concept that atomic orbitals fuse to shape newly hybridized orbitals, which in turn, impacts molecular geometry and bonding properties. Hybridization is likewise an growth of the valence bond theory. Hybridization is described because the intermixing of atomic orbitals with the equal strength tiers to offer the equal range of a brand new form of hybrid orbitals. This intermixing commonly consequences withinside the formation of hybrid orbitals having totally one of a kind energies, shapes, etc.

To learn more about hybridization check the link below-

https://brainly.com/question/22765530

#SPJ4

Complete question-

Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp, sp², and sp³

a) C₅H₆

b) C₄H₆

c) C₃H₆

d) C₄H₄

e) C5H8

Answer:

Chemical Change

Explanation:

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

We have 2 containers connected by a valve.

One container has a volume of 3.00 L and contains O₂ at 4.00 atm. The other container has a volume of 2.00 L and contains Ne at 2.00 atm.

When the valve is opened, the total volume is the sum of the 2 containers.

\(V_2 = 3.00 L + 2.00 L = 5.00 L\)

Assuming constant temperature and ideal behavior, we can calculate the final pressure of each gas using Boyle's law.

O₂

\(P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{4.00atm \times 3.00L}{5.00L} = 2.40atm\)

Ne

\(P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{2.00atm \times 2.00L}{5.00L} = 0.800atm\)

The final pressure in the container will be the sum of the final pressures of the gases.

\(P = 2.40 atm + 0.800 atm = 3.20 atm\)

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

Learn more: https://brainly.com/question/1437490

To Find :

Gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm .

Solution :

We know, by ideal gas equation :

\(PV =nRT\\\\T = \dfrac{PV}{nR}\)

Here, R is universal gas constant and \(R = 0.082 \ L \ atm \ mol^{-1} \ K^{1}\)

Putting all given values and R in above equation, we get :

\(T = \dfrac{PV}{nR}\\\\T = \dfrac{143.5\times 25}{203 \times 0.082}\ K\\\\T = 215.52\ K\)

Hence, this is the required solution.

In this question, we have:

31.1 grams of O2

84.3 grams of F2

94.9 L of total volume

55.77°C of temperature which is equal to 328.92 K

Now, to find the pressure of this container, we can find the number of moles of each gas, and add both values together making it one value of moles and then we will use the Ideal gas law to find the pressure, so let's start with O2

The molar mass of O2 is 32g/mol and we have 31.1 grams

32g = 1 mol

31.1g = x moles

x = 0.972 moles of O2

Now for F2, the molar mass is 38g/mol, and we have 84.3 grams

38g = 1 mol

84.3g = x moles

x = 2.22 moles of F2

Now we add these values, 0.972 + 2.22 = 3.192 moles

And now we can use the ideal gas law formula:

PV = nRT

Remember that R is the gas constant, 0.082

P * 94.9 L = 3.192 * 0.082 * 328.92

94.9P = 86.1

P = 0.91 atm

The quantity of heat needed to raise the temperature of one mole of a substance by one degree is called latent heat.

Latent heat is the energy that a substance absorbs or releases when going through a phase shift in its physical state without changing its temperature. The latent heat involved in melting solids or freezing liquids is referred to as the "heat of fusion," while the latent heat involved in vaporizing solids or liquids or condensing vapor is referred to as the "heat of vaporization." The quantity of heat (in joules or calories) per mole or unit mass of the substance undergoing a change in state is the typical way to represent latent heat.

                                                     L = Q/m

where,

L = latent heat of a substance

Q = energy released or absorbed during phase change

m = mass

Learn more about latent heat here:

https://brainly.com/question/13499849

#SPJ4

Answer:

The correct answer is Water boiling. Examples of physical change are freezing of water, boiling of water, melting of wax, etc. Examples of chemical change are digestion of food, burning of paper, rusting of metal, silver tarnishing, etc.

When the lid accidentally slips over the crucible and completely seals it, it means that the water vapor that is supposed to escape during the heating process is now trapped inside the crucible. This will lead to an increase in the measured mass of the hydrate.

Specifically, the calculated percent water of hydration will be higher than the actual value. This is because the trapped water will increase the measured mass of the sample, leading to a higher calculated mass of water present in the hydrate. Since the percent water of hydration is calculated as the mass of water divided by the total mass of the hydrate, the higher measured mass will result in a higher calculated percent water of hydration.


Overall, the accidental sealing of the crucible lid will have a significant impact on the calculated experimental results and the accuracy of the percent water of hydration. It is important to be careful and precise when performing laboratory experiments to minimize the potential for errors and ensure accurate results.

To know more about hydrate visit :-

https://brainly.com/question/11202174

#SPJ11

Critical mass is the amount of a radioactive element required to sustain a chain reaction.

The term used to describe the amount of a radioactive element required to sustain a chain reaction is "critical mass." Critical mass is a term used in nuclear physics that refers to the minimum mass of fissionable material needed to maintain a self-sustaining nuclear chain reaction. A chain reaction occurs when a neutron hits a nucleus, which then splits and releases more neutrons, leading to a cascade of nuclear reactions. Critical mass is determined by various factors such as the physical and chemical properties of the fissile material, its shape, temperature, and density. If too little of a fissile material is present, the neutrons will escape, and the reaction will stop.

If too much material is present, the reaction will become uncontrollable and lead to a nuclear explosion. Critical mass refers to the smallest amount of fissile material required to maintain a chain reaction. In order for a chain reaction to occur, a certain number of neutrons must be present. This number of neutrons is known as the neutron population, and it must be maintained at a certain level to keep the reaction going. This is accomplished by carefully controlling the amount of fissile material that is present. If there is too little fissile material, the neutron population will quickly drop below the critical level, and the reaction will stop.

If there is too much fissile material, the neutron population will grow uncontrollably, leading to a nuclear explosion. In order to maintain a chain reaction, the fissile material must be in a critical state, meaning that the neutron population remains constant over time. This is achieved by controlling the geometry of the fissile material, as well as its temperature and density. If any of these parameters change, the critical state will be lost, and the reaction will either stop or become uncontrolled. Therefore, critical mass is a crucial concept in the design and operation of nuclear reactors and weapons.

To know more about radioactive visit:

https://brainly.com/question/1770619

#SPJ11

The answers include the following:

This is referred to as the largest organ in the body which has a rich network of nerves and blood vessels and is responsible for protecting the body from pathogens and other foreign bodies.

Living organisms such as humans have different skin colors and is based on the amount of the protein known as melanin present in it .The color of the skin of a chicken wing ranges from white to yellow and is attached to the subcutaneous tissue.

This type of tissue is responsible for connecting the skin to the muscles and bones which are present in the body so as to perform functions necessary for the survival of the animal.

Read more about Skin here https://brainly.com/question/306377

#SPJ1