upon equilibrium cooling of a hypereutectoid composition austenite, the first new phase to appear is:

Answer:

Skeletal

Cardiac

Smooth

Explanation:

The body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscl

ANSWER

The mass of water is 0.0536 kg

STEP-BY-STEP EXPLANATION;

Given information

The mass of KNO3 = 175g

The molarity of the solution = 32.25 M

The molality formula is given below as

The first step is to find the mole of the solute using the below formula

Recall, the molar mass of KNO3 is 101.1032 g/mol

The second step is to find the mass of water using the molality formula

Hence, the mass of water is 0.0536 kg

The effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.

1. The class of drugs being investigated in this study is antidepressants. They enter our waterways through excretion by individuals taking the medication, and disposal of unused medication into toilets or sinks that are connected to wastewater treatment plants.

2. C-start is an evasive maneuver that young fish use when they perceive a predator. This is important for larval fish survival because it helps them to avoid being eaten by predators.

3. In this investigation, researchers are testing two hypotheses. The first is that exposure to low levels of antidepressants can affect larval fathead minnows' behavior, and the second is that the effects of exposure will be more pronounced in fish that have been raised in a less stressful environment.

4. The researchers found that exposure to antidepressants at levels found in waterways can have a significant impact on the behavior of larval fathead minnows. Specifically, they found that the fish exposed to antidepressants were less likely to respond to the presence of predators, which could increase their risk of being eaten.

They also found that the effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.

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The Hamlet saying is To be or Not to be means to be live or not to be live.

The hamlet says that to be or not to be because he is questioning the value of the life. he is question to himself that whether it is worthwhile hanging there. hamlet is in extreme depression.  hamlet is fed up with everything around him in the world. hamlet is in confusion whether it is worth to exist. hamlet is dilemma whether to live or die.

Thus, the hamlet says , To be or not to be because he is questioning about value of life whether to live or to die.

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The isomerization of cyclopropane to propylene is a first-order process with a half-life of 19 minutes at 500oc. The time it takes for the partial pressure of cyclopropane to decrease from 1. 0 atmosphere to 0. 125 atmosphere at 500oc is closest to 57 minutes.

First, we must get the rate constant.

k= 0.693/ 19 = 0.0365 min⁻¹

Now we need to figure out how long decay takes.

First order kinetics' expression for the rate law is provided by:

t= (2.303/k) log a/(a-x)

where,

Rate constant = k

t = time it took for decay to occur.

Initial reactant pressure equals 1.0 atm, or a.

After the process of decay, a - x equals 0.125 atm of pressure.

After entering all the values into the equation above, we get

t= (2.303/0.0365) log 1/(1-0.125)

t = 57 min

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Answer

crush the cubes of broth, add warm water and stir the container.

Explanation

The FASTEST way to make the chicken broth with the cubes you have will be to increase the surface area of the cubes broth by crushing and raise the temperature of the cubes broth by adding warm water and by stirring the container.

Hence, the correct answer to your question is:

crush the cubes of broth, add warm water and stir the container.

At this point, helium is exerting 1270 torr of pressure against its container.

Boyle's Law, a cornerstone of chemistry, describes the behavior of a gas sustained at a constant temperature. Robert A. Boyle discovered this law in 1662: at a certain temperature, the volume of a gas is inversely proportional to the pressure it exerts. To put it another way, if a gas is driven into a closed place, it will condense to fit the area but raise the pressure on the container.

Boyle's law, which is arguably a clearer way to put it, is the relationship between pressure and volume. Mathematically, Boyle's law can be written as pV=k, where p stands for the pressure, volume, and mass of the gas and k is a constant.

The solution is straightforward when temperature and moles are constant,

P₁V₁ = P₂V₂

Given,

P₁ = 760 torr

P₂ = ?

V₁ = 5.00 I

V₂ = 3.00 I

(760)(5.00) = (3.00)(P₂),

P2 = 1270 torr.

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Answer:

The correct answer is C 112

Explanation:

I just took the test good luck :)

Answer:

I think it is 112

Answer:

Compounds have a homogenous composition of atoms even thou they are different atoms . they are always joined in the same ratio and cannot be separated by physical methods. May lose their property as they undergo chemical changes generally.

Whereas mixture are formed by uneven ratio of atoms and these are made and separated by physical processes .No new substances are formed in mixtures .The constituents of a mixture do not lose their properties

Explanation:

Answer:

Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile..

The valid unit for reaction rate is D) Ms (molarity per second). This unit represents the change in concentration of a substance over time and is commonly used to measure the rate of a chemical reaction. The other options, A) mmol/ml, B) g/L, C) mol/g, and E) atmig, are not appropriate units for reaction rate.

The reaction rate is a measure of how quickly the concentration of reactants decreases or the concentration of products increases over time. It is expressed as the change in concentration per unit time.

Option D) Ms (molarity per second) is a valid unit for reaction rate. Molarity (mol/L) represents the concentration of a substance, and when divided by time (seconds), it gives the rate of change in concentration per unit time. This unit is commonly used in chemical kinetics to quantify the speed of a reaction.

Options A) mmol/ml, B) g/L, C) mol/g, and E) atmig are not appropriate units for reaction rate. These units do not represent the change in concentration per unit time, which is the essence of reaction rate. They may represent other quantities such as concentration, mass, or pressure, but they do not directly relate to the rate of a chemical reaction.

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Explanation:

\(RFM \: = 160 \: g \\ 1 \: mole \: weighs \: 160 \: g \\ 2.75 \: moles \: weighs \: \frac{2.75 \times 160}{1} g \\ = 440 \: g\)

The amount of water  that is produced is 3.46 moles of water.

We have to note that we have to apply the stoichiometry of the reaction so that we can be able to get the amount of the water that can be produced in the reaction.

We know that the reaction is; 2H2 + O2 ---->2H2O

Number of moles of the oxygen = 55.44 grams/32 g/mol

= 1.73 moles

If 1 mole of oxygen produces 2 moles of water

1.73 moles of oxygen would produce 1.73 * 2/1

= 3.46 moles of water.

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Answer:

things like hair color, eye color, skin color, size of lips, curly or straight hair, are things that could be passed down to an offspring. Things like tattoos wont be passed down.

Explanation:

things like hair color, eye color, etc. get passed down because those are inheritable traits and things like tattoo aren't.

Answer:  28.4 g of aluminum oxide is produced by the reaction of 15.0 g of aluminum metal

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)   

\(\text{Moles of} Al=\frac{15.0g}{27g/mol}=0.556moles\)

The balanced chemical equuation is:

\(4Al+3O_2\rightarrow 2Al_2O_3\)  

According to stoichiometry :

4 moles of \(Al\) produce == 2 moles of \(Al_2O_3\)

Thus 0.556 moles of \(Al\) will produce=\(\frac{2}{4}\times 0.556=0.278moles\)  of \(Al_2O_3\)

Mass of \(Al_2O_3=moles\times {\text {Molar mass}}=0.278moles\times 102g/mol=28.4g\)

Thus 28.4 g of aluminum oxide is produced by the reaction of 15.0 g of aluminum metal.

Answer:

A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius. The complete combustion of a large kitchen match, for example, gives you about one kilocalorie of heat

Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got.

The fair test that he could do to answer the question is C. Try to scratch the marble with each of the minerals, and group the minerals that do scratch the marble together.

When he try to scratch the marble with each of the minerals in her group he can observe the results for a fair test. however One that scratches the other is harder than one that has been scratched.

Hence, Given that marble is a well-known mineral, any mineral that scratches it is harder, while those that do not are less so. and the hardness of minerals can be determined using  with the Moh's scale, with diamond being the hardest mineral and talc being the least hard.

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complete question;

Lewis has the collection of minerals shown in the picture below.He knows that a harder mineral will scratch a softer mineral. He wants to design an experiment that will answer the following question:

Which of the minerals in the collection have a greater hardness than a rock made of marble?

Which of these is a fair test that he could do to answer the question?

A.

Separate the minerals into light and dark colors, and then try to scratch the marble with the light colored minerals.

B.

Separate the minerals into ones that feel heavier and lighter, and then try to scratch the marble with the heavy minerals.

C.

Try to scratch the marble with each of the minerals, and group the minerals that do scratch the marble together.

D.

Try to scratch the pink quartz with each of the minerals, and group the minerals that do not scratch the pink quartz together.

Taking into account the reaction stoichiometry, an amount of 84 moles of H₂ are needed to react with 28 moles of nitrogen.

In first place, the balanced reaction is:

N₂ + 3 H₂  → 2 NH₃

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

It can be applied the rule of three: If by reaction stoichiometry 1 mole of N₂ react with 3 moles of H₂, 28 moles of N₂ react with how many moles of H₂?

moles of H₂= (28 moles of N₂×3 moles of H₂)÷1 mole of N₂

moles of H₂= 84 moles

Finally, 84 moles of H₂ reacted.

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The frequency of the photon that causes a transition from the n=4 state to the n=6 state in a hydrogen atom is determined by the difference in energy between the two states.

When an electron transitions between different energy levels in a hydrogen atom, it emits or absorbs photons with specific frequencies. The energy of a photon is directly proportional to its frequency, as described by the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency.

In this case, the transition is from the n=4 state to the n=6 state. The energy levels in a hydrogen atom are given by the equation E = -13.6 eV/n^2, where n represents the principal quantum number. Plugging in the values for the two states, we find that the energy difference between them is:

ΔE = E(n=6) - E(n=4)

   = (-13.6 eV/6^2) - (-13.6 eV/4^2)

   = -13.6 eV(1/36 - 1/16)

   = -13.6 eV(4 - 9)/144

   = -13.6 eV(-5)/144

   = 13.6 eV(5)/144

Now, to determine the frequency of the photon, we can convert the energy difference to joules using the conversion factor 1 eV = 1.6 x 10^-19 J:

ΔE (J) = (13.6 eV(5)/144)(1.6 x 10^-19 J/eV)

       = (13.6 x 5 x 1.6 x 10^-19) / 144 J

Finally, we can calculate the frequency of the photon using the equation E = hf:

f = ΔE (J) / h

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Based on the empirical formula of C2H3O, the molecular formula of the compound can be calculated using its molecular mass:

Molecular formula mass = (empirical formula mass) x n

where n is a positive integer that represents the number of empirical formula units in the molecule.

For this compound, the molecular formula mass is 86 amu, which is the same as the molecular mass given in the problem. Therefore, n = 1, and the molecular formula is also C2H3O.

Plausible structure with alcohol, ether, and alkyne functional groups:

One possible structure for this compound that contains an alcohol, ether, and alkyne functional groups is propargyl alcohol.

H C≡C─CH2─OH

│

O

This compound has the empirical formula C2H3O and a molecular mass of 56 amu. To get the molecular mass of 86 amu, we can add a methyl group (CH3) to the propargyl alcohol molecule:

H C≡C─CH2─O─CH3

│

O

Plausible structure with aldehyde and ketone functional groups:

Another possible structure for this compound that contains an aldehyde and ketone functional groups is propanal acetone.

H

│

O═C─CH2─CH3

│

O

│

CH3

This compound has the empirical formula C2H3O and a molecular mass of 86 amu.

What is an empirical formula?

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Answer:

22.4/3.8=5.89

Explanation:

Answer:

When table salt is added to water the resulting solution has a higher boiling point than the water did by itself. The ions form an attraction with the solvent particles that then prevent the water molecules from going into the gas phase. Therefore, the salt-water solution will not boil at 100oC

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Answer:

B

Explanation:

because water has the always has the same volume but it can change shape of the glass or container that it is put in

Answer: The rate of diffusion of methane is 100 cc.

Explanation:

Graham's law states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas. The equation for this follows:

\(\text{Rate}=\frac{1}{\sqrt{M}}\)       .....(1)

where M is the molar mass of the gas

We are given:

\(Rate_{X}=50cc\)

\(M_{X}=4\times M_{CH_4}\)

Since the molar mass of methane = 16 g/mol

Using equation 1:

\(\frac{Rate_{CH_4}}{Rate_{X}}=\sqrt{\frac{M_X}{M_{CH_4}}}\)

Putting values in above equation, we get:

\(\frac{Rate_{CH_4}}{50cc}=\sqrt{\frac{(4\times 16)}{16}}\\\\Rate_{CH_4}=50\times \sqrt{4}\\\\Rate_{CH_4}=50times 2=100cc\)

Hence, the rate of diffusion of methane is 100 cc.

Answer:

2. chlorine

3. Copper??

4. Isotope

5. sodium, magnesium, aluminum, silicon, phosphorus, sulfur, or argon

6. Oganesson

7. Hydrogen

Hope these are right!

3.06 grams of barium chloride is necessary to react with 5.0 grams of silver nitrate.

We first need to write out the balanced chemical equation for the reaction between barium chloride and silver nitrate:
BaCl2 + 2AgNO3 → 2AgCl + Ba(NO3)2
From the equation, we can see that 1 mole of barium chloride reacts with 2 moles of silver nitrate to produce 2 moles of silver chloride and 1 mole of barium nitrate.
We can use the molar masses of barium chloride (208.23 g/mol) and silver nitrate (169.87 g/mol) to convert the given mass of silver nitrate to moles:
5.0 g AgNO3 / 169.87 g/mol = 0.0294 mol AgNO3
Using the mole ratio from the balanced equation, we can then calculate the moles of barium chloride needed to react with this amount of silver nitrate:
1 mol BaCl2 / 2 mol AgNO3 = x mol BaCl2 / 0.0294 mol AgNO3
x = 0.0147 mol BaCl2
Finally, we can convert this to grams of barium chloride:
0.0147 mol BaCl2 x 208.23 g/mol = 3.06 g BaCl2
Therefore, 3.06 grams of barium chloride is necessary to react with 5.0 grams of silver nitrate.

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