1200+ Liquid B+L 1000 a+L 800 B α 28% 780°C (Ag) (Cu) T (°C) 은 600 a + B 400 200 0 0 10 20 30 50 70 80 90 40 60 Mass % Cu 100 Cu Ag What are the compositions of the two phases present at 778°C under equilibrium? What are the microconstituent amounts (% of sample) of the pro-eutectic phase, total eutectic solid, eutectic alpha, and eutectic beta at 778°C under equilibrium? Draw a quantitatively accurate sketch of the microstructure developed at a temperature of 778°C under equilibrium, being careful to get the proportions correct

Answer:

( NH4NO3 -> N2+O2+H2O)

Explanation:

40g= 14g+8g+X

x=18g

hope that helps :)

The salt obtained from the combination of the weak acid cyanic acid, hcno, and the weak base ammonia, nh3, is used to make an aqueous solution. is the solution basic.

The weak acid of such a buffer system is created when it interacts with both the conjugate base of the buffer system. The pH then just slightly declines, the weak acid concentration rises, and the conjugate base concentration falls.

The acid and base would react to create an acidic solution in a weak base-strong acid titration. During the titration, a conjugate acid would be created, which will subsequently react with water to create hydronium ions. Consequently, a solution with such a pH under 7 is produced.

Therefore, The salt obtained from the combination of the weak acid cyanic acid, hcno, and the weak base ammonia, nh3, is used to make an aqueous solution. is the solution basic.

To know more about weak acid

https://brainly.com/question/12811944

#SPJ4

The number of moles of water that vaporized during the first five minutes would be 2.78 moles (50 g / 18 g/mol = 2.78 moles).

Moles are a kind of small mammal found in many parts of the world. They are burrowing animals, living underground in burrows and tunnels. They have adapted to life underground and have physical features that help them survive in this environment, such as small eyes and ears, short legs and strong claws. They feed mainly on grubs, worms, and other small invertebrates found underground. They also eat some plant material and occasionally small animals. Moles are solitary animals and live in small family groups. They play an important role in the ecosystem, aerating and fertilizing the soil.

In order to calculate the number of moles of water that vaporized during the first five minutes, we must first calculate the mass of water vaporized during the same time period. This can be done by subtracting the mass of water remaining in the beaker after five minutes from the initial mass of water in the beaker. Once the mass of water vaporized is determined, it can then be converted to moles using the equation mass (g) = moles x molar mass (g/mol).

Assuming the initial mass of water in the beaker was 100 g, and the mass of water remaining in the beaker after five minutes was 50 g, the mass of water vaporized during this time period would be 50 g. To convert this to moles, we would use the equation mass (g) = moles x molar mass (g/mol). Since the molar mass of water is 18 g/mol, the number of moles of water that vaporized during the first five minutes would be 2.78 moles (50 g / 18 g/mol = 2.78 moles).

To know more about moles click-
https://brainly.com/question/15356425
#SPJ1

Answer:

composition of N₂S₂, you divide the total mass of each atom by the molecular mass and multiply by 100 %. Mass of 2 N atoms = 2 N atoms × 14.01u1N atom = 28.02 u.

The correct answer is c. Iron. Red water problems are primarily caused by the presence of iron in the water, which can cause discoloration and an unpleasant taste and odor.

Iron Red water problems are primarily due to the presence of iron in the water. When iron is oxidized, it forms insoluble reddish-brown particles that can cause staining and other issues. Hardness refers to the concentration of dissolved minerals like calcium and magnesium in water, while turbidity refers to the cloudiness or haziness of water caused by suspended particles. Hydrogen sulfide is a gas that can cause a rotten egg odor in water.

Learn more about water here:

brainly.com/question/12167508

#SPJ11

The camel consumed approximately 2.24 kg of protein from the Bermudagrass hay.

To calculate the amount of protein the camel consumed, we need to consider the dry matter basis of the hay. Here's how you can calculate it:

Calculate the dry matter weight of the hay:

Dry Matter Weight = Total Weight of Hay × Dry Matter Percentage

Dry Matter Weight = 18.3 kg × (83.4/100)

Dry Matter Weight = 18.3 kg × 0.834

Dry Matter Weight = 15.2442 kg

Calculate the protein content in the dry matter;

Protein Content = Dry Matter Weight × Protein Percentage

Protein Content = 15.2442 kg × (14.7/100)

Protein Content = 15.2442 kg × 0.147

Protein Content = 2.2414194 kg

Therefore, the camel consumed approximately 2.24 kg of protein from the Bermudagrass hay.

To know more about Bermudagrass here

https://brainly.com/question/30516027

#SPJ4

Answer:

Silicon (Si)

Explanation:

Add the protons and neutrons mass to get the nucleus mass. Then you get number 14 and 28. looking at the periodic table we can see this matches silicon's atom mass and electron number

3.6494 kilojoules of energy is produced when 50 grams of water are heated from 6.2 degrees Celsius to 23.6 degrees Celsius.

This is a long answer, so please bear with me. To calculate the energy produced when 50 grams of water are heated from 6.2 degrees Celsius to 23.6 degrees Celsius, we need to use the formula:
Q = m x c x ΔT

where Q is the energy produced (in joules), m is the mass of the water (in grams), c is the specific heat capacity of water (in joules per gram per degree Celsius), and ΔT is the change in temperature (in degrees Celsius).

First, let's convert the mass of water from grams to kilograms, so we can use the SI units in the formula.

50 grams = 0.05 kilograms

Next, let's find the specific heat capacity of water. It is 4.18 joules per gram per degree Celsius.

Now, let's calculate the change in temperature.

ΔT = final temperature - initial temperature
ΔT = 23.6 degrees Celsius - 6.2 degrees Celsius
ΔT = 17.4 degrees Celsius

Substituting all the values in the formula, we get:

Q = 0.05 kg x 4.18 J/g°C x 17.4°C
Q = 3.629 joules

But the answer is required in kilojoules, so we need to divide by 1000 to convert joules to kilojoules.

Q = 3.629 J ÷ 1000
Q = 0.003629 kilojoules (rounded to 3 decimal places)

Therefore, the energy produced when 50 grams of water are heated from 6.2 degrees Celsius to 23.6 degrees Celsius is 0.003629 kilojoules or approximately 150 joules.
To calculate the energy produced, we will use the specific heat capacity formula:

Energy (Q) = mass (m) × specific heat capacity (c) × temperature change (ΔT)

For water, the specific heat capacity (c) is 4.18 J/g°C.

Given:
Mass (m) = 50 grams
Initial temperature (T1) = 6.2°C
Final temperature (T2) = 23.6°C

Temperature change (ΔT) = T2 - T1 = 23.6 - 6.2 = 17.4°C

Now we can calculate the energy produced:

Q = 50g × 4.18 J/g°C × 17.4°C = 3649.4 Joules

To convert Joules to Kilojoules, we divide by 1000:

3649.4 J ÷ 1000 = 3.6494 kJ

So, 3.6494 kilojoules of energy is produced when 50 grams of water are heated from 6.2 degrees Celsius to 23.6 degrees Celsius.

To know more about energy visit:-

https://brainly.com/question/1932868

#SPJ11

The action modeled by the diagram is; flow of ions ( cations and anions ) in a cell/compound

The diagram is used to represent the flow of control ( flow of ions ) in a system, it is similar to a data flow diagram, because the start, direction and endpoint of an activity diagram is the similar to that of a data flow diagram. Activity diagrams are also used to generally describe the steps in a use case system as seen in the diagram attached in the question.

Hence the diagram ( activity ) represents the flow of ions in a compound

learn more : https://brainly.com/question/16610518

Answer:

Wavelength increases, and frequency decreases.

for my lazy friends its letter C

Explanation:

e2021

The statement 'wavelength increases and frequency decreases' best describes electromagnetic waves moving from gamma rays to radio waves (option C).

The term wavelength makes reference to the distance between the picks of the waves in the electromagnetic spectrum.

In conclusion, the statement 'wavelength increases and frequency decreases' best describes electromagnetic waves moving from gamma rays to radio waves (option C).

Learn more about electromagnetic waves here:

https://brainly.com/question/14015797

Considering the definitions of atomic number and mass number, a radium atom has 138 neutrons.

First, an atom is defined as the smallest particle that can break down an element without losing the chemical properties that characterize it.

It consists of a positively charged central part, where almost all mass is concentrated to form the nucleus, and a certain number of negatively charged particles, electrons, which form the crust.

Atomic number, on the other hand, is denoted by the letter Z and indicates the total number of protons in the nucleus of a particular atom.

Finally, mass number is denoted by the letter A and indicates the sum of the number of protons and neutrons in the nucleus. The number of protons equals the atomic number,

In this case, the element radium has a mass number of 226 and an atomic number of 88.

so the mass number is

Mass number = (number of atoms) + (number of neutrons)

226= 88 + number of neutrons

226 - 88 = number of neutrons

138 = number of neutrons

therefore, a radium atom has 138 neutrons.

learn more about neutron here: https://brainly.com/question/5527493

#SPJ4

The correct order of bond polarity is;

H- S < H - O < H- Cl < H -F

Bond polarity refers to the distribution of electrons in a covalent bond between two atoms. In a covalent bond, atoms share one or more pairs of electrons in order to achieve a stable electron configuration.

In some cases, the shared electrons are not equally shared between the two atoms, leading to a bond in which one atom has a greater share of the electrons than the other. This results in a partial negative charge on one end of the bond and a partial positive charge on the other end, creating a separation of charge known as a dipole. The bond is then said to be polar.

Learn more about bond polarity:https://brainly.com/question/10777799

#SPJ1

To determine the specific volume of a sample of dry air, we can use the ideal gas law. The ideal gas law equation is:

PV = nRT

Where:

P = Pressure (in Pascal)

V = Volume (in cubic meters)

n = Number of moles of the gas

R = Ideal gas constant (8.314 J/(mol·K))

T = Temperature (in Kelvin)

To convert the given pressure and temperature to the SI units (Pascal and Kelvin), we have:

Pressure = 50 kPa = 50,000 Pa

Temperature = 263 K

Now, we can rearrange the ideal gas law equation to solve for volume (V):

V = (nRT) / P

Since we're dealing with a specific volume, we need to determine the volume per unit mass. Therefore, we'll consider one kilogram (kg) of dry air.

To calculate the number of moles (n) of air in one kilogram, we need to know the molar mass of dry air. The molar mass of dry air can be approximated as 28.97 g/mol.

1 kg of air = 1000 g

Number of moles (n) = (mass of air) / (molar mass of air)

n = (1000 g) / (28.97 g/mol)

Now we can substitute the values into the equation:

V = [(1000 g) / (28.97 g/mol)] * (8.314 J/(mol·K)) * (263 K) / (50,000 Pa)

V/n ≈ 0.0434 m³/mol is the specific volume of the dry air sample.

Learn more about ideal gas law: brainly.com/question/27870704

#SPJ11

Answer:

1.14 moles of oxygen will react

Explanation:

The balanced equation of reaction between iron and oxygen is  

4 Fe + 3 O₂  → 2 Fe₂O₃

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

The molar mass of iron being Fe 55.85 g/mole, then the following amount of mass reacts by stoichiometry: 4 moles* 55.85 g/mole=223.4 g

You can apply the following rule of three: if by stoichiometry 223.4 grams of Fe react with 3 moles of O₂, 84.9 grams of Fe react with how many moles of O₂?

\(moles of O_{2} =\frac{84.9 grams of Fe*3 moles ofO_{2} }{223.4 grams of Fe}\)

moles of O₂= 1.14 moles

1.14 moles of oxygen will react

Based on the lab values provided, the answer would be D. The patient has been immunized against hepatitis B as indicated by the presence of HBsAB.

The absence of HBsAg and HBcAb suggest that the patient has not had a recent or current infection with hepatitis B. It is important to note that these lab values should be interpreted by a health care provider in the context of the patient's medical history and any additional lab or clinical findings.

HBcAb (-) means the patient does not have antibodies for the hepatitis B core antigen, suggesting no past infection. These results suggest that the patient has been immunized against hepatitis B.

To know more about health click here

brainly.com/question/24054028

#SPJ11

Interpreting these lab values for a 40-year-old patient with the given terms:

HBsAg (-), HBsAB(+), HBcAb(-)

a. the pt had hepatitis
b. the pt has hepatitis
c. the pt should consider immunization
d. the pt has been immunized

Your answer: d. the pt has been immunized.

HBsAg (Hepatitis B surface antigen) is negative, which indicates the patient does not have an active Hepatitis B infection.
HBsAB (Hepatitis B surface antibody) is positive, which suggests that the patient has developed immunity to Hepatitis B, either from previous exposure or immunization.
HBcAb (Hepatitis B core antibody) is negative, which means the patient has never been exposed to Hepatitis B.

Therefore, the interpretation of these lab values suggests that the patient has been immunized against Hepatitis B.

To know more about HBsAg , HBsAB and HBcAb:

https://brainly.com/question/31546490

#SPJ11

Litmus is an example of an indicator, a substance that changes color depending on its pH (pH is a measure of the concentration of protons, or H+ ions). In the Titration Gizmo™, you will use indicators to show how acids are neutralized by bases, and vice versa.

To begin, check that 1.00 M NaOH is selected for the Burette, Mystery HBr is selected for the Flask, and Bromthymol blue is selected for the Indicator.

Calculate: Concentration is measured by molarity (M), or moles per liter. Brackets are also used to symbolize molarity. For example, if 0.6 moles of HNO3 are dissolved in a liter of water, you would say [HNO3] = 0.6 M.

Because HNO3 is a strong acid, it dissociates almost completely in water. That means the concentration of H+ is very nearly equal to that of HNO3.What is [H+] if [HNO3] is 0.01 M? 0.01 M

The pH of a solution is equal to the negative log of H+ concentration: pH = –log[H+]

Describe: The equation for the reaction of nitric acid (HNO3) and sodium hydroxide (NaOH) is shown on the bottom right of the Gizmo.

Measure: A titration can be used to determine the concentration of an acid or base by measuring the amount of a solution with a known concentration, called the titrant, which reacts completely with a solution of unknown concentration, called the analyte. The point at which this occurs is called the equivalence point.

Explain: A titration curve is a graph of pH vs. volume of titrant. The graph at right shows a typical titration curve for the titration of a strong acid by a strong base. (A strong base is one that has relatively high dissociation in water.)

According to theBrønsted-Lowry definition, an acid is a substance that is capable of donating a proton to another substance. A base is a substance that accepts protons. When an acid and a base are combined, the acid is neutralized as the base accepts the protons produced by the acid.One way to determine if a solution is acidic or basic is to use litmus paper, as shown above. There are two types of litmus papers: red and blue.How does litmus paper indicate an acid? Both strips turn red.

Answer:

It is unsaturated

Explanation:

A solution is said to be unsaturated when it contains less solute than it can normally hold at a given temperature.

The solubility of NaCl remains fairly independent of temperature hence the line for the solubility of NaCl remains fairly flat in the solubility curve.

The solubility of NaCl is about 36 g of NaCl in 100g of water. Hence a solution that contains 35.00 g of sodium chloride in 100 g of water at 45.0C is unsaturated.

Answer:

Explanation:

When Iron is dipped in Aluminium Chloride, a redox reaction occurs. Basically iron reacts with Chloride ion and forms a solid precipitate of Aluminium.

End result :Iron (II) Chloride forms and Aluminium forms the precipitate

Answer:

i dont get your question Man

In mathematics, a set is a well-defined collection of distinct objects

♥plz give me brain list it would really help a lot♥

Hydronium ion  [H₃O⁺ ]  concentration of pure water at room temperature is 1 × 10⁻⁷ M.

Due to the amphiprotic nature of water, the auto ionization process can result in the formation of both an OH⁻ ion and  H₃O⁺ ion.

              H₂O +   H₂O   →  H₃O⁺  +  OH⁻

Equilibrium constant K can be:    k =  aH₃O⁺  ×  aOH⁻/   aH₂O

where a represents a activity of species. Water is the solvent and the solution is presumed to be diluted. Hence the activity of the water is approximated by the activity of pure liquid water, which is defined having value of 1.

One water molecule act as an acid and other water molecule act as a base in this process. As a result, this reaction can be referred to as both the \(K_{a\) and the \(K_{b}\)of water. However, the term \(K_{w\) of water is most frequently  term used.

                                   \(K_{W}\) = [H₃O⁺ ]  [OH⁻]

At a temperature of 25 °C, pure liquid water is in equilibrium with the  hydronium and hydroxide  ions and their concentrations are equal.

            [H₃O⁺ ]   =   [OH⁻]    =    1 × 10⁻⁷ M  

              \(K_{w\) =    (1 × 10⁻⁷)   ×   (1 × 10⁻⁷)   =   1 × 10⁻¹⁴ M

To learn more about Hydronium ion [H₃O⁺] click here

 brainly.com/question/9560402

#SPJ4

Answer:

B is incorrect

Explanation:

Ocean are made of salt water which is undrinkable therefore they are not any type of drinking water source.

Direct electron transfer from a a singlet reduced species to a triplet oxidizing species is quantum-mechanically forbidden.

To view more questions on quantum mechanism, refer to:

https://brainly.com/question/13639384

#SPJ4

Answer:

C

Explanation:

The rate of a reaction decreases as time progresses. ... If the amount of reactant particles is decreasing as the reaction progresses, then the chance of successful collisions must also decrease, and ultimately when all the reactant particles have reacted, the reaction must stop and the rate become zero.

Answer:

c

Explanation:

A chemical change occurs when there is a bond breaking or bond making. A phase change, change in phase and or change in shape does not make a chemical change. A chemical change can be indicated by the heat given off by a reaction or change. Thus, option a is correct.

There are broadly two types of change occurs for a substance namely chemical change or physical change. A physical change is a change in state or phase involves no formation products or breaking of bonds. For example melting of a solid to liquid and boiling of liquid to gas etc.

In a chemical change there makes a bond breaking or making to form a new product. All chemical reactions such as combination reactions, decomposition, displacements etc. are chemical changes.

Every chemical change is associated with an enthalpy of heat energy that is absorbed or released by the system. Thus heat given off is an indication of a chemical change. Hence, option A is correct.

To find more about chemical change, refer the link below:

https://brainly.com/question/8159283

#SPJ1

The effective nuclear charge of sulfur is 14, and the effective nuclear charge of chlorine is 15.

Effective nuclear charge (Zeff) is a measure of the positive charge felt by the valence electrons. The effective nuclear charge (Zeff) of s and Cl is calculated using the simple formula zeff = z – s, where z is the atomic number and s is the screening constant. Screening constant (s) is the number of electrons between the nucleus and the valence electrons that shield the valence electrons from the full nuclear charge of the nucleus.

For sulfur (S), the atomic number is 16, and there are two electrons in the innermost shell and four electrons in the second shell. So, the number of valence electrons in sulfur is 6. The screening constant of S is 2. Effective nuclear charge of sulfur = z – s= 16 - 2= 14

For chlorine (Cl), the atomic number is 17, and there are two electrons in the innermost shell and eight electrons in the second shell and seven valence electrons. Therefore, the screening constant of Cl is 2. Effective nuclear charge of chlorine = z – s= 17 - 2= 15

Learn more about effective nuclear charge: https://brainly.com/question/30459988

#SPJ11

In nuclear physics, the Q-value is the amount of energy liberated during a nuclear reaction. In general, it is defined as the difference in mass between the reactants and the products, multiplied by the speed of light squared.

Q-value: For the reaction ¹n+⁶Li→⁷Li*→{⁷Li+γ}, the Q-value is calculated by subtracting the mass of the reactants from the mass of the products, then multiplying the difference by the speed of light squared. Thus, Q = (7.01600 - 6.01512 - 1.00866) × c²= (0.99222 amu) × (931.5 MeV/amu) = 923.6 MeV where c is the speed of light in vacuum and amu is the atomic mass unit.

Kinematic threshold energy: In order to take part in a nuclear reaction, the colliding particles must have a minimum kinetic energy. The minimum energy required for the reaction to occur is known as the kinematic threshold energy.KTE = [(M_{a} + M_{b})/M_{a}] × Qwhere M_a and M_b are the atomic masses of the colliding particles.

Using this formula, the kinematic threshold energy for the above reaction is: KTE = [(1.00866 + 6.01512)/1.00866] × 923.6 MeV= 5629.6 MeV Minimum kinetic energy of the products: The minimum kinetic energy of the products is calculated as the difference between the total energy liberated and the kinetic energy of the products.

The kinetic energy of the products is given by the Q-value, so the minimum kinetic energy of the products is: KE_{min} = Q = 923.6 MeVTo summarize the calculations: Reaction Q-value (MeV)Kinematic Threshold Energy (MeV)Minimum Kinetic Energy of Products (MeV)¹n + ⁶Li → ⁷Li* → {⁷Li + γ}923.6 5629.6 923.6¹n + ⁶Li → ⁷Li* → {⁶Li + n}5.3 0.0 5.3¹n + ⁶Li → ⁷Li* → {⁶He + p}8.6 4.8 8.6¹n + ⁶Li → ⁷Li* → {⁵He + d}-3.7 N/A N/A¹n + ⁶Li → ⁷Li* → {³H + α}-22.4 N/A N/AIn conclusion, the Q-value, kinematic threshold energy, and minimum kinetic energy of the products have been calculated for five possible reactions that create the compound nucleus ⁷Li.

To know more about nuclear reaction refer here: https://brainly.com/question/13315150#

#SPJ11

Answer:

The chemical equation needs to be balanced so that it follows the law of conservation of mass.

Explanation:

Explanation:

the chemical equation needs to be balance so that it follows the law of conservation of mass. a balance chemical equation occurs when the number of the different atoms of elements to the reactants side is equal to that of the product side. balancing chemical equation is a process of trial and error .

Answer:

Yes

Explanation:

The compounds have both hydrogen and carbon only which are atoms that make up the hydrocarbons and they are also gases at room temperature