The pituitary gland releases many different areas of the body. different hormones which affect​

The new boiling point is found essentially the same way as the freezing point, except replacing the freezing point quantities with boiling point quantities:

Where,

DeltaTb, is the change in boiling point temperature

Kb, is the molal boiling point

m, is the molality

We have to calculate first which is the molality of the solution.

Now, we replace the know data into the first equation:

The boiling point of a solution will be the boiling temperature of water alone plus the temperature delta found:

Tb=100°C + 0.46°C=100.46°C

The boiling point of the solution will be 100.46°C

The total pressure inside the container is ; 9 atm

Applying Dalton's law of partial pressure the total pressure for a mixture of gases equals sum of all partial pressures  

Therefore :

Total pressure = P1 + P2 + P3

                         = 2 atm + 3 atm + 4.0 atm

                         = 9 atm.

Hence we can conclude that the total pressure inside the container is ; 9 atm

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Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl

To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7.  Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.

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Answer:

2 electrons

Explanation:

Answer:o It is important to realise that mixing will be small unless there are electrons in the 4a1 LUMO, this is why NH3 is pyramidal while BH3 is planar! ... This mixing is very strong and stabilises the 3a1 MO substantially and hence NH3 is trigonal pyramidal and not planar.

Explanation:

The yield of the response is 245.6% and the number of moles of H2SO4 is 0.09849 moles.

To decide the yield of the response, we first need to ascertain how much \(H2SO4\) created:

Volume of H2SO4 = 20.1 mL = 0.0201 L

Grouping of H2SO4 = 4.9 M

Measure of H2SO4 = \(fixation x volume\) = \(4.9 M x 0.0201 L = 0.09849\) moles

We realize that the response is:

\(SO3(g) + H2O(l) → H2SO4(aq)\)

The decent condition lets us know that 1 mole of SO3 responds with 1 mole of H2O to create 1 mole of H2SO4. Hence, the hypothetical yield of \(H2SO4\) would be 0.0401 moles (since 40.1g of SO3 is comparable to 0.4 moles of SO3).

The genuine yield is given  \(H2SO4\) created, which is 0.09849 moles.

The yield of the response is then, at that point:

Yield = \((genuine yield/hypothetical yield) x 100 percent\)

= \((0.09849 moles/0.0401 moles) x 100%\)

= 245.6%

Subsequently, the yield of the response is 245.6%.

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Answer:

the atomic number decreased in 2, from 100 to 100 - 2 = 98. 3) Hence the formed atom has atomic number 98, which is californium, Cf, and the isotope is californium - 253. 4) The item that completes the given alpha decay reaction is: ₉₈²⁵³ Cf.

Explanation:

Answer

Calculating the mass number for an atom requires that we know the atomic number and the number of protons in the atom’s nucleus. The mass number then gives us the average weight of atoms of a given element. However, as long as the number of protons equals the number of neutrons, the values balance out and we always obtain a whole number for the mass number.

Explanation:

those 3

The release of calcium ions from the smooth ER is an important cellular process that plays a crucial role in many physiological functions, such as muscle contraction, neurotransmitter release, and cell signaling.

When stimulated, the smooth ER releases calcium ions into the cytoplasm, which then bind to proteins such as calmodulin and activate a cascade of downstream signaling pathways. In muscle cells, for example, the binding of calcium ions to the protein troponin triggers muscle contraction by allowing myosin and actin to interact. In nerve cells, the release of calcium ions is involved in the release of neurotransmitters, which are necessary for communication between neurons. Overall, the release of calcium ions from the smooth ER is a critical component of many cellular processes that are essential for normal physiological function.

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Answer:

b. made from renewable resources

Explanation:

"Bioplastics are plastic materials produced from renewable biomass sources, such as vegetable fats and oils, corn starch, straw, woodchips, sawdust, recycled food waste, etc."

Tell me if its right!

The molecule for further use in the citric acid cycle is NAD+.

In the absence of oxygen after glycolysis cells undergo fermentation without the citric acid cycle or oxidative phosphorylation. The citric acid cycle requires oxygen. This is because the electron transport chain requires an electron acceptor to regenerate her NAD, which is the role of oxygen.

Some of this is considered an aerobic pathway because the NADH and FADH2 produced must transfer electrons to the next pathway in the system using oxygen. Without oxygen, this transfer would not occur. Two carbon atoms from each acetyl group enter the citric acid cycle. Oxygen is the terminal electron acceptor of the mitochondrial electron transport chain and is therefore required for energy production via oxidative phosphorylation.

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Answer:

Iron and chlorine form an ionic compound whose formula is FeCl3. The name of this compound is iron (III) chloride or iron trichloride.

Explanation:

Iron (III) chloride or Iron trichloride is also known as ferric chloride, it is a common compound of iron in the +3 oxidation state. The anhydrous compound is a crystalline solid with a melting point of 307.6 °C.

Answer:

5 hours.

Explanation:

Given that,

Initial time, \(T_i=6\ pm\)

Final time, \(T_f=11\ pm\)

We need to find how much time did it take the car to arrive.

Time =  final time-initial time

= 11 pm - 6 pm

= 5

So, it takes 5 hours by car to arrive.

Answer:

b

Explanation:

Answer:

-8 m/s^2

Explanation:

The formula for acceleration is:

a= v^2 - v^1/t

a= acceleration

v^2- final velocity which in this case would be 0 since the jet comes to a stop.

v^1= original velocity which is 80 m/s.

t=time or 10s

Substitute the letters for the numbers and you get this:

a= 0 - 80/10

0 - 80= -80

-80 divided by 10 is -8.

Hope this helps! :)

Both of these structures satisfy the octet rule for Se.

To draw the Lewis structures for SeF4 and SeF6, we need to determine the number of valence electrons for selenium (Se) and fluorine (F).

- Selenium has six valence electrons (group 16 element) and needs two more electrons to complete its octet.

- Fluorine has seven valence electrons (group 17 element) and needs one more electron to complete its octet.

1. Lewis structure for SeF4:

- Place the Se atom in the center and arrange the F atoms around it.

- Connect the Se atom to each F atom with a single bond.

- Place two lone pairs on the Se atom to satisfy its octet.

F F

| |

F--Se--F

| |

F F

2. Lewis structure for SeF6:

- Place the Se atom in the center and arrange the F atoms around it.

- Connect the Se atom to each F atom with a single bond.

- Add six lone pairs around the F atoms to satisfy their octets.

F

|

F--Se--F

|

F

The octet rule is satisfied for Se in SeF4 and SeF6. In SeF4, Se has a total of eight valence electrons (six from the lone pairs and two from the bonds) and in SeF6, Se has twelve valence electrons (six from the lone pairs and six from the bonds). Both of these structures satisfy the octet rule for Se.

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ξ = 0 reduces the Halpin–Tsai equation to the inverse rule of mixtures Equation 3.40, whereas a value of ξ = ∞ reduces it to the rule of mixtures Equation 3.27.

The Halpin-Tsai equation (Equation 3.63) is used to predict the effective elastic modulus of composite materials. When ξ = 0, the equation reduces to the inverse rule of mixtures Equation 3.40, which assumes that the load transfer between the matrix and fibers is perfect. In other words, the fibers do not slip or debond from the matrix and behave as if they are part of the matrix. On the other hand, when ξ = ∞, the equation reduces to the rule of mixtures Equation 3.27, which assumes that the fibers are independent and do not interact with the matrix. In this case, the effective modulus is simply the weighted average of the moduli of the matrix and fibers. The inverse rule of mixtures and the rule of mixtures represent two extremes of the behavior of composite materials. In reality, the behavior is somewhere between these two extremes, and the value of ξ is typically in the range of 0 to ∞. Theξ = 0 reduces the Halpin–Tsai equation to the inverse rule of mixtures Equation 3.40, whereas a value of ξ = ∞ reduces it to the rule of mixtures Equation 3.27. Halpin–Tsai equation provides a way to predict the effective modulus for intermediate values of ξ. The value of ξ depends on the properties of the matrix and fibers, as well as the interfacial properties between them.

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Answer:

combustion

Explanation:

your welcome :)

Answer:

D

Explanation:

Solvent is the material that is dissolving another material​. Thus, option D is correct.

A solvent is a substance that dissolves another substance to form a solution. The substance that is being dissolved is called the solute, and the substance that is doing the dissolving is called the solvent. The solute is usually present in a smaller amount than the solvent, and it is the solvent that determines the physical properties of the solution, such as its density, viscosity, and boiling point.

For example, when salt is dissolved in water, the salt is the solute and the water is the solvent. The water molecules surround the salt molecules and break them apart, so that the salt ions are free to move around in the solution. The solution is then a homogeneous mixture of salt ions and water molecules.

Thus, option D is correct.

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If 28.1 g of chromium is produced then the mass of aluminium oxide is produced is 27.5 g.

Cr2O3 + 2Al→2Cr + Al2O3

Through law of conservaion of mass

41.0 + 14.6 = 28.1 + x

55.6 = 28.1 + x

x = 27.5g

What is law of conservation of mass?

Since Antoine Lavoisier discovered that mass is neither created nor destroyed in chemical reactions, the Law of Conservation of Mass has been in existence. Alternatively said, the mass of any one element at the start of a reaction will match the mass of that element at the conclusion of the reaction.

The overall mass in any closed system will remain constant over time if we take into account all reactants and products in a chemical reaction. The discovery made by Lavoisier revolutionized science and set the stage for modern chemistry.

​

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The following which are medical applications of radiation include the following below:

This is referred to as the transmission of energy through space and it usually occurs at the speed of light thereby making it a very fast method of heat transfer when compared to the others. Radiation are used for various purposes such as immigration for searching luggage etc.

It is also used for medical reasons such as cancer therapy as the radiation help in destroying the cancerous cells thereby making it easy for their removal from the body system. It is also used for genetic engineering in the creation of new types of substances through the modification of nucleic acids such as DNA etc.

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The volume that 4.95 moles of hydrogen gas will occupy at STP is 110.95L.

The volume occupied by a gas can be calculated using the ideal gas equation as follows:

PV = nRT

Where;

According to this question, a gas at standard temperature and pressure will have the following characteristics:

1 × V = 4.95 × 0.0821 × 273

V = 110.95L

Therefore, 110.95L is the volume occupied by the ideal gas.

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The cultures of prehistoric humans are primarily known through the excavation of stone tools and other durable artifacts, such as the Oldowan and Acheulian tool traditions.

Stone tools and imperishable artifacts serve as key archaeological evidence for understanding prehistoric cultures. Through meticulous excavation and analysis, archaeologists have been able to piece together the lifestyles, technological advancements, and social behaviors of early human societies. The term "paleolithic" refers to the Old Stone Age, a time when humans relied on stone tools as their primary implements.

The Oldowan tool tradition is considered the earliest stone tool industry, dating back around 2.6 million years ago. It is characterized by simple tools, such as choppers and scrapers, which were crafted by flaking off pieces from larger stones. These tools were primarily used for basic activities like butchering and processing animal carcasses.

Later, the Acheulian tool tradition emerged around 1.76 million years ago, representing an advancement in stone tool technology. Acheulian tools, such as handaxes and cleavers, were more refined and standardized, showcasing an increased level of sophistication in tool-making techniques. These tools served a wide range of purposes, including hunting, woodworking, and shaping raw materials.

By studying the Oldowan and Acheulian tool traditions, researchers gain valuable insights into the cognitive abilities, cultural development, and technological progress of early humans. The examination of these artifacts provides evidence of their adaptability, problem-solving skills, and the gradual refinement of their tool-making techniques over time.

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Answer:

See explanation below

Explanation:

You forgot to put the picture to do so. In this case, I manage to find one, and I hope is the one you are looking for. If not, then post it again and I'll gladly help you out again.

According to the picture with the answer, we have a cyclohexane with 4 methyl groups there. Two of them are facing towards the molecule with a darker bond. This means that the alkyl bromide, should have a bromine in one of the bonds, and in order to produce an E2 reaction, this bromine should be facing in the opposite direction of the methyl groups which are facing towards. This is because an E2 reaction occurs with the less steric hindrance in the molecule. If the bromine is in the same direction as the methyl group, it will cause a lot more of work to do a reaction, and therefore, an E2 reaction. I will promote instead a E1 or a sustitution product.

Therefore the alkyl bromide should be like the one in the picture 2.

The silver ring of the same mass of 27.5 gm of gold will have 1.9 times more atom.

We need to find moles first,

Moles = mass/ Atomic Mass

Then number of atoms can be calculated from moles,

So , no. of moles of gold ring = 27.5g/196.967

= 0.13 moles.

Since 1 mole contains 6.023 x 10^23 atoms, then 0.13 mole contains (6.023 c 10^23) x 0.13 atoms

= 7.82 c 10^22 atoms.

no. of moles for silver = 27.5/107.87

= 0.25 moles.

This contains (6.023 x 10^23) x 0.27 atoms.

= 1.5 x 10^23 atoms.

So 27.5g of silver contains 1.67 x 10^23/9.17 x 10^22 more atoms than 27.5g of gold.

So 27.5g silver contains 1.9 x more atoms than 27.5g of gold.

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To show that experimental concentration data fits a zeroth-order reaction, the concentration of the reactant should be plotted against time.

This is because in a zeroth-order reaction, the rate of reaction is independent of the concentration of the reactant. Therefore, the concentration of the reactant will decrease linearly with time. The slope of the line obtained from the concentration vs time plot will be negative and equal to the rate constant, k, for the zeroth-order reaction. The y-intercept of the line will be equal to the initial concentration of the reactant. It is important to note that the concentration vs time plot may not always be a perfect straight line, especially towards the end of the reaction when the reactant concentration is low. However, if the majority of the data points lie on a straight line, then it is a good indication that the reaction follows a zeroth-order rate law.

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