A sample of krypton has a volume of 6.00 L, and the pressure is 0.960 atm. If the final temperature is 55.0°C, the final volume is 7.70 L, and the final pressure is 1.25 atm, what was the initial temperature of the krypton?

Answer:

P = 995.6 atm

Explanation:

assuming ideal gas:

∴ Tst = 25°C ≅ 298 K

∴ V = 35.00 mL = 0.035 L

∴ molar mass CO2 = 44.01 g/mol

∴ mass CO2(g) = 62.76 g

⇒ mol CO2(g) = (62.76 g)*(mol/44.01 g) = 1.426 mol

∴ R = 0.082 atm.L/K.mol

⇒ P = RTn/V

⇒ P = ((0.082 atm.L/K.mol)*(298 K)*(1.426 mol)) / (0.035 L)

⇒ P = 995.6 atm

Answer:

The pressure of the carbon dioxide (CO2) gas is 0.913 atm

Explanation:

Step 1: Data given

Mass of carbon dioxide (CO2) = 62.76 grams

Molar mass of carbon dioxide (CO2) = 44.01 g/mol

Volume = 35000 mL = 35 L

Standard temperature = 273 K

Step 2: Calculate moles CO2

Moles CO2 = mass CO2 / molar mass

Moles CO2 = 62.76 grams / 44.01 g/mol

Moles CO2 = 1.426 moles

Step 3: Calculate the pressure

p*V = n*R*T

⇒with p = the pressure of the gas

⇒with V = the volume of the gas = 35 L

⇒with n = the moles of the gas = 1.426 moles

⇒with R = the gas constant = 0.08206 L*atm/mol *K

⇒with T = the temperature = 273 K

p = (n*R*T) / V

p = (1.426 * 0.08206 * 273) / 35

p = 0.913 atm

The pressure of the carbon dioxide (CO2) gas is 0.913 atm

Answer:

i think it's D I'm not sure...

Answer:

b, if it produced in an earlier step

Explanation:

i got it right :) hope this helps!!

Answer:

[tex]c = 449 \: j \: kg {}^{ - 1} \: k {}^{ - 1} [/tex]

Answer:

the volume is 20 just subtract

Explanation:

Answer:

The magnet will exert a force on the electric current

Explanation:

The electric current flowing through the cord will experience magnetic force due to presence of magnetic field created by the magnet brought near it.

The magnitude of the magnetic force experienced by this flowing current is given as;

F = qvB

where;

q is charge of electron (measured in coulomb's, C)

v is the speed of the flowing current (m/s)

B is the magnetic field strength (T)

Therefore, the magnet will exert a force on the electric current

Answer:

301.89 mL

Explanation:

- Use combined gas law formula

- Rearrange that formula to fit values then plug them in.

- Be sure to change C to K

Hope that helped! Let me know if you need further explanation.

Answer:

1.66×10^-15

Explanation:

the explanation is in the picture

please like and Mark as brainliest

Answer:

chemical energy to thermal energy

Explanation:

Then the person must click the on button once this occurs the electrical energy is transformed into thermal energy. There are other types of flat irons such as using water to create steam to straighten the hair or using a chemical called butane this is chemical energy which is later transformed into thermal energy.

Explanation:

Electrical energy is transformed to heat energy when the curling iron stays on. Heat energy is transferred to the hair that is being curled.

Answer:

glucose

Explanation:

Glucose is the product of photosynthesis that is required for cellular respiration, serving as an energy source converted into ATP. Option C is correct.

The product of photosynthesis that is also a requirement for cellular respiration is glucose. Photosynthesis uses sunlight, carbon dioxide (CO₂), and water (H₂O) to produce glucose (C₆H₁₂O₆) and oxygen (O₂). While glucose is utilized as a source of energy during cellular respiration, oxygen is also involved in this process but is not considered a product of photosynthesis that is used in cellular respiration.

Glucose is the crucial link between these two processes, serving as the energy source that cellular respiration converts into ATP (adenosine triphosphate), the energy currency of the cell.

Hence, C. is the correct option.

The complete question is:

Which of these is a product of photosynthesis and a requirement

for cellular respiration?

Select one:

A) sunlight

B) carbon dioxide

C) glucose

D) water

Answer:

[tex]\large \boxed{\text{0.028 24 mol/L}}[/tex]

Explanation:

1. Balanced chemical equation.

The unbalanced equation is  

As₄O₆ + I₃⁻ ⟶ H₃AsO₄ + I⁻

The balanced equation is

1As₄O₆ + 4I₃⁻ + 10H₂O ⟶ 4H₃AsO₄ + 12I⁻ + 8H⁺

2. Moles of As₄O₆

[tex]\text{Moles of As$_{4}$O}_{6} =\text{ 0.1021 g As$_{4}$O}_{6} \times \dfrac{\text{1 mol As$_{4}$O}_{6}}{\text{395.68 g As$_{4}$O}_{6}} = 2.580 \times 10^{-4} \text{ mol As$_{4}$O}_{6}\\\\=\text{0.2580 mmol As$_{4}$O}_{6}[/tex]

3. Moles of I₃⁻

[tex]\text{Moles of I}_{3}^{-} = \text{0.2580 mmol As$_{4}$O}_{6} \times \dfrac{\text{4 mmol I}_{3}^{-}}{\text{1 mmol As$_{4}$O}_{6}} =\text{1.032 mmol I}_{3}^{-}[/tex]

4. [I₃⁻]

[tex]c = \dfrac{\text{1.032 mmol }}{\text{36.55 mL }} = \textbf{0.028 24 mol/L}\\\text{The concentration of I$_{3}^{-}$ is $\large \boxed{\textbf{0.028 24 mol/L}}$}[/tex]

The molarity of the iodide ion in the given solution has been 0.028 M.

The balanced chemical reaction can be given as:

[tex]\rm As_4O_6\;+\;4\;I^3^-\;+\;10\;H_2O\;\rightarrow\;4\;H_3AsO_4\;+\;12\;I^-\;+\;8\;H^+[/tex]

Moles of [tex]\rm \bold{As_4O_6}[/tex] = [tex]\rm \dfrac{0.1021}{395.68}[/tex]

Moles of [tex]\rm \bold{As_4O_6}[/tex] = 0.2580mmol

Moles of [tex]\rm \bold{I^3^-}[/tex] = [tex]\rm moles\;of\;As_4O_6\;\times\;ratio\;of\;\dfrac{I^3^-}{As_4O_6}[/tex]

Moles of [tex]\rm \bold{I^3^-}[/tex] = 0.2580 [tex]\rm \times\;\dfrac{4}{1}[/tex]

Moles of [tex]\rm \bold{I^3^-}[/tex] = 1.032 mmol

Molarity = [tex]\rm \dfrac{moles}{volume\;(L)}[/tex]

Molarity = [tex]\rm \dfrac{1.032\;\times\;10^-^3}{36.55\;\times\;10^-^3}[/tex]

Molarity = 0.028 M

The molarity of the iodide ion in the given solution has been 0.028 M.

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I believe that the answer is density.

Reason being is because the density of an object does not change when an object changes size.

The physical properties are the physical modifications like color, conductivity, shape, etc. Density does not vary with changes in size.

Physical properties are the reversible properties related to the appearances, melting and the boiling point, conductivity, density, shininess, etc.

The density of the silver element does not vary with changes in the size of the sample as it is a physical property and is constant. The volume is the physical property that varies with size and flammability and reactivity with oxygen are chemical properties.

Therefore, option C. density is the physical property that will not vary with size.

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Since the 2 pieces are made of the same material (aluminum), they have the same specific heat.  Then the piece of lower mass will warm up faster.

ΔT = Q/(mc)

They both receive the same heat transfer Q from the sun,  they both have the same specific heat c, so the one of lower mass m attains the higher temperature rise ΔT over the same time interval.

The 20-gram piece of aluminum will heat up by ten degrees faster than the 40-gram piece because it has less mass. This is based on the properties of heat capacity, represented by the formula for heat transfer Q = mcΔT.

This question is about heat capacity, a concept in physics related to the thermal properties of materials including aluminum. The heat capacity of an object determines how much it will heat up for a given amount of heat applied. It is determined by an object's mass and the specific heat of its material.

As both objects in question are made of aluminum, the specific heat of the material is the same, and thus the only factor that makes a difference is the mass. The heat capacity of an object is proportional to its mass, so a larger object will take longer to heat up. Consequently, the 20-gram piece of aluminum will heat up faster than the 40-gram piece.

This is because less energy is needed to cause a given temperature increase in a smaller mass than in a larger mass, due to the direct proportionality of heat, mass, and temperature change. This is represented by the formula for heat transfer Q = mcΔT, where Q is the heat transferred, m is the mass, c is the specific heat, and ΔT is the change in temperature.

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Answer:

vegetative reproduction

Explanation:

Answer:

Animal Regeneration

Answer:

The coronavirus has RNA?

Explanation:

Coronaviruses are important human and animal pathogens and contain an extraordinarily long (27-31 kb) RNA genome. Its RNA synthesis involves complex mechanisms of regulation, similar to those of DNA viruses. In this treatise, mouse hepatitis virus (MHV) is used as a model for the discussion of the mechanism of viral RNA synthesis. We show that MHV RNA synthesis requires interactions of multiple RNA components, which are likely mediated by protein-RNA and protein-protein, as well as RNA-RNA, interactions. This virus also provides a unique example of a discontinuous transcription mechanism, which involves a trans-acting RNA component. Finally, study of the cis-acting signals for the various steps of RNA synthesis revealed an insight into the regulation of viral RNA synthesis. This discussion suggests that the regulation of RNA synthesis in coronavirus is more complex than previously thought possible for RNA viruses. Coronavirus RNA transcription and replication may serve as a paradigm of RNA synthesis for RNA viruses in general.

Answer:

m lost an electron coz it transffered it

The transmutation of Cobalt-59 by accepting a neutron is shown by;

[tex]59/27 Co + 1/0 n ------ > 60/27Co[/tex]

A nuclear reaction equation has to do with the change of one isotope of an element to an isotope of another element most times, owing to the bombardment of a small particle.

The transmutation of nitrogen to oxygen is shown by; [tex]14/7N + 4/2He ---- > 17/8O + 1/1p[/tex]

The transmutation of Cobalt-59 by accepting a neutron is shown by;

[tex]59/27 Co + 1/0 n ------ > 60/27Co[/tex]

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Answer:

1- 17

2- 1

3- 27

Explanation:

Answer:

Neutral

Explanation:

The protons and Electrons are equal, so the cancel out each other's charge This leaves the  Neutral charge of Neutrons, so, the Atom of Silicon is Neutral.

The charge of an atom's nucleus is determined by its number of protons. In this case, the nucleus has a +14 charge.

The nucleus of an atom contains its protons and neutrons. The charge of the nucleus is determined by the number of protons because neutrons do not carry a charge. Therefore, an atom with +14 protons would have a +14 charge in its nucleus, because the protons each have a +1 charge, irrespective of the number of neutrons or electrons.

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Answer:

A

Explanation:

With chemical reactions, there are various factors that affect the rate of the reaction. One of these is temperature.

When you raise the temperature, the reaction will move faster. Why? Temperature is directly correlated with the kinetic energy (basically, the energy that makes the particles move). Higher temperatures mean higher kinetic energies. Particles with higher kinetic energies move faster, which makes them more likely to collide. When collisions occur more frequently, the reaction follows through more quickly.

Thus, when Julissa warms the solutions, she will see that bubbling and white solid formation (the products of the reaction) occus faster. So, the answer is A.

Hope this helps!

Final answer:

Proteins in food are broken down into amino acids through chemical digestion, a process that takes place mainly in the small intestine with the help of enzymes. This is different from mechanical digestion, which physically breaks down food without changing its chemical composition. The resulting amino acids are then absorbed in the small intestine.

Explanation:

Proteins in foods are broken down into amino acids through the process of chemical digestion. This process involves the reduction of complex proteins into their chemical building blocks, amino acids, which can then be absorbed into the bloodstream to nourish the cells of the body. Most of chemical digestion occurs in the small intestine, particularly in the duodenum, where enzymes break down proteins. It is important to differentiate this process from mechanical digestion, which refers to the physical breakdown of food into smaller pieces through actions such as chewing, without altering the chemical composition of the food.

The absorption of nutrients, primarily in the small intestines, follows digestion. The amino acids, once liberated from the proteins by chemical digestion, are absorbed through the walls of the small intestine and enter the bloodstream for distribution to the body's cells. This process is fundamental because proteins in the diet are not directly absorbed but must first be broken down into their constituent amino acids.

Answer:

1. LiCl - Lithium chloride

2. Li2O - Lithium oxide

3. CaFl2 - Calcium fluoride

4. MgCl2 - Magnesium chloride

5. KNO3 Potassium nitrate

6. Be3P2 Beryllium phosphide

Explanation:

- You just need to know the rules of naming compounds and doing formulas. If you would like more help with this or further explanation please let me know. Hope this helps!

The volume of the drum after chilled quickly is 3.6 L.

Explanation:

As per the Charles Law, for any gas at constant pressure, volume of the gas is in direct proportion with the temperature measured in Kelvin. As the temperature increases, the gas expands and vice versa.

[tex]$\frac{V1}{T1} = \frac{V2}{T2} \\[/tex]

After chilling the drum, the volume will get reduced and it can be found as,

V2 = [tex]$\frac{V1T2}{T1}[/tex]

     = [tex]$\frac{7.7 L \times 282 K}{598 K}[/tex]

      = 3.6 L

Here the drum is chilled quickly, that is temperature is reduced and so the volume also decreases.

Answer:

I am not sure but DO NOT PICK SCHWANN.

Explanation:

That other person is wrong. Maybe it is Virchow. Sorry if I am wrong.

The scientist most likely to write a book titled 'Cells Come from Cells' is Rudolf Virchow, as he popularized the idea that all cells arise from pre-existing cells.

The scientist most likely to write a book titled Cells Come from Cells is Rudolf Virchow. Virchow is known for popularizing the concept that all cells arise from pre-existing cells, an idea that greatly contributed to the development of the modern cell theory. This statement became known as `Virchow's Law' or 'Omnis cellule e cellula', which means 'every cell comes from a cell'.

Other scientists such as Hooke, Schwann, and Schleiden made key contributions to the cell theory as well, but their work focused on different aspects. Hooke, for example, first identified and named cells, but did not propose their mode of formation. Similarly, Schwann and Schleiden identified that both plants and animals are made up of cells.

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Answer:

N-terminal Phe, C-terminal Ser

Explanation:

Amino acids connect like

NH2 -CH(R1) -CO -NH-CH(R2)-CO-.....-NH-CH(Rn)COOH

So, 1st amino acid is N -terminal , and it is Phe.

Last amino acid is C- terminal, and it is Ser.

Answer:

If i'm correct it is carbon dioxide. If i'm not correct sorry!

Explanation:

To solve this we must be knowing each and every concept behind respiration. Therefore, oxygen is the substance which is removed from the air by living things for respiration.

Respiration is a mechanism that happens within cells to produce energy by breaking down glucose molecules. The process may be neatly separated into two groups based on the usage of oxygen: anaerobic and aerobic respiration.

Many people believe that humans as well as other multicellular creatures solely employ aerobic respiration. This is countered by the fact that human muscles perform anaerobic respiration during strenuous activity, creating lactic as a waste byproduct instead of carbon dioxide. Oxygen is the substance which is removed from the air by living things for respiration.

Therefore, oxygen is the substance which is removed from the air by living things for respiration.

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Answer: 37.0 °C , 42.5 °C

Explanation:

Answer:

1st one - 37.0

2nd one - 42.5

Explanation:

Answer:

A Lever

Explanation:

Answer:

A: Increase

Explanation: