c. Suppose that the volume of the container is now decreased to 1.75 L, with the temperature held constant. What will be the new (initial) pressure of CO2(g) in the reduced volume container, before it reaches equilibrium

To calculate the value of n, we need to use the Rydberg equation: 1/λ = R(1/n1^2 - 1/n2^2). In this equation, λ is the wavelength of the highest energy line (821 nm) and R is the Rydberg constant (1.097x10^7 m^-1). Solving the equation for n1 yields a value of n1 = 3.863.

This value of n1 indicates that the highest energy line of atomic hydrogen will have a wavelength of 821 nm. This is because the Rydberg equation is used to calculate the wavelength of spectral lines in an emission spectrum, with higher values of n producing shorter wavelengths and lower values of n producing longer wavelengths. Therefore, a value of n1 = 3.863 will produce a series of lines with a highest energy line of 821 nm.

Know more about Rydberg equation here

https://brainly.com/question/28304174#

#SPJ11

Since the stoichiometric ratio between Fe(NO₃)₃ and Fe(SCN)₃ is 1:1, the amount of Fe(SCN)₃ produced is also 0.02915 moles.

To find the concentration of Fe³⁺ in the solution after the other reactants are added, we need to determine the limiting reagent and calculate the amount of Fe³⁺ produced.

First, let's calculate the amount of Fe³⁺ produced from the reaction between Fe(NO₃)₃ and KSCN:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

From the balanced equation, we can see that 1 mole of Fe(NO₃)₃ reacts with 3 moles of KSCN to produce 1 mole of Fe(SCN)₃.

The initial concentration of Fe(NO₃)₃ is 5.83 M and the volume used is 5.00 ml (which is equivalent to 0.00500 L). Thus, the amount of Fe(NO₃)₃ used is:

Amount of Fe(NO₃)₃ = concentration × volume

= 5.83 M × 0.00500 L

= 0.02915 moles

Know more about stoichiometric ratio here:

https://brainly.com/question/6907332

#SPJ11

The number of moles of H atoms in 15.2 grams of pure ice is 0.850 moles

The number of moles of O atoms in 15.2 grams of pure ice is 13.50 moles

An atom is a smallest indivisible particle of a chemical element that is capable of independent existence.

Using the relation:

The number of moles of H2O = 15.2 grams/18.02 g/mol

number of moles of H2O = 0.8435 moles

If the atomic mass of H and O are as follow:

Then:

the number of H atoms in 15.2 grams of pure ice = mass of H atom × molar mass of H2O.

the number of H atoms = 0.8435 mol × 1.00784 g/mol

the number of H atoms = 0.850 moles

the number of O atoms in 15.2 grams of pure ice = 0.8435 mol × 15.999 g/mol

the number of O atoms = 13.50 moles

Learn more about atoms here:

https://brainly.com/question/25832904

If a titration net volume should be 20. 00 ml and a student accidentally goes one drop past the endpoint (~0. 05 ml),then the percent error is 0.25%.

Percent error is defined as the difference of experimental value and theoretical value and measures the accuracy of the result found. The greater the error, lesser is the accuracy and vice versa.

Vd = 1mL/20 drops

where,

Vd is volume of one drop

Vd = 0.05mL

Error is defined as the ratio of change in volume divided by real volume.

e(%) = {(Vr-Vt) /Vt}×100

where,

Vr = real volume

Vd = theoretical volume

e(%) = {((20+0.05) -20) /20} × 100

e(%) = 0.25%

Thus, we find that the percent error on adding one drop is 0.25%.

learn more about percent error:

https://brainly.com/question/3105259

#SPJ4

No, a combination of 2- and 1-hexanol cannot be detected and use an IR spectrum.

The characteristic colors of infrared energy (or a subset of it) that are released or absorbed by a material, atom, or molecule are known as a spectrum. The sun's spectrum of colours, the rainbow, and a molecule's infrared absorption wavelengths are a few examples of spectra.

A band of several colours, including violet, indigo, blue, greener, yellow, orange, and red, is referred to as a spectrum (plural: spectra). If sunlight from the Sun is let through a mirror and allowed to collect on a white screen, a rainbow can be observed.

To know more about spectrum visit:

brainly.com/question/21134950

#SPJ1

Answer:

Each molecule of liquid water is involved in approximately four hydrogen bonds with strengths significantly lower than covalent bonds but significantly greater than natural thermal energy. ... Even a very small reinforcement of hydrogen bonds can have a major impact on normal metabolism.

Explanation:

The noble gas with a molar mass of 80.0 g/mol is Krypton (Kr).

To find the molar mass of the noble gas, follow these steps:

1. Convert the given pressure to atmospheres: 758 mm Hg × (1 atm / 760 mm Hg) = 0.998 atm.
2. Convert the given temperature to Kelvin: 23.0 °C + 273.15 = 296.15 K.
3. Use the ideal gas law equation, PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant (0.08206 L atm / mol K), and T is the temperature.
4. Rearrange the equation to solve for n: n = PV / RT.
5. Plug in the given values: n = (0.998 atm × 40.75 L) / (0.08206 L atm / mol K × 296.15 K) = 1.7515 mol.
6. Calculate the molar mass by dividing the mass of the gas by the number of moles: Molar mass = 140.1 g / 1.7515 mol = 80.0 g/mol (rounded to 3 significant figures).

The noble gas with a molar mass of 80.0 g/mol is Krypton (Kr).

Learn more about noble gas.

brainly.com/question/20314892

#SPJ11

a) The Cation Exchange Capacity, CEC, of the soil is 16 cmolc.

b) The aluminum saturation of the soil is approximately 18.75%.

(a) The CEC (Cation Exchange Capacity) of the soil is calculated from the sum of the exchangeable cations present in the soil.

CEC = Ca²⁺ + Mg²⁺ + K⁺ + Al³⁺

CEC = 9 cmolc + 3 cmolc + 1 cmolc + 3 cmolc

CEC = 16 cmolc

(b) To calculate the aluminum saturation of the soil, we need to determine the percentage of the CEC occupied by Al³⁺ ions.

Aluminum Saturation = (Al³⁺ / CEC) * 100

Aluminum Saturation = (3 cmolc / 16 cmolc) * 100

Aluminum Saturation ≈ 18.75%

Learn more about cation exchange capacity at: https://brainly.com/question/30689981

#SPJ4

Answer:

64567000000 nanolitres

Explanation:

Base 10 decimal system: 1 milli = 1000000 nano

We simply multiply 64,567 millilitres by 1000000 to get our number in nanolitres:

64567(1000000) = 64567000000 nanolitres

Answer:

b

Explanation:

When solid converts to gas then heat is required to break the intermolecular forces of attraction between the particles. Therefore, the correct option is option B.

Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure. Phase transition is a physical process as there is no breaking of old bond and forming of new bonds takes place.

During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing. the solution can be broken down as Cool liquid from 314 K to 273 K, freeze liquid at 273 K.

Therefore, the correct option is option B.

To learn more about phase transition, here:

https://brainly.com/question/3255181

#SPJ5

Answer:

Explanation:

The relatively small increase and decrease pattern of CO2 shown in the Keeling curve or graph is primarily caused by seasonal variations in the Earth's natural carbon cycle. During the northern hemisphere winter, when plants go dormant,  less photosynthesis occurs and less carbon dioxide is removed from the atmosphere. At the same time, more carbon dioxide is released into the atmosphere due to the decomposition of organic matter in soil and water. As a result,  atmospheric CO2 concentration increases during winter.

Conversely, atmospheric CO2 concentrations decrease during the Northern Hemisphere summer, when plants grow actively and absorb carbon dioxide through photosynthesis. This is because plants absorb more CO2 from the atmosphere than they release through decomposition.

Superimposed on these seasonal variations is a long-term upward trend in CO2 concentrations driven primarily by human activities such as fossil fuel burning and deforestation. The overall increase in atmospheric CO2 concentration due to these human activities causes global warming and other adverse effects on the global climate and ecosystems.  

To know more about keeling graph

https://brainly.com/question/29488441

Ca(OH)₂⇒ Ca²⁺ + 2OH⁻

s                 s         2s

Ksp = [Ca²⁺][OH⁻]²

Ca(NO₃)₂ ⇒ Ca²⁺ + 2NO₃⁻

0.1 M             0.1        0.2

Input in Ksp

1.3 x 10⁻⁶ = 0.1 . 4s²

s² = 3.25 x 10⁻⁶

s = 1.8 x 10⁻³

1.8 x 10⁻³ is the molar solubility. Solubility is the amount of a substance that can be dissolved in a liquid to form a solution.

Solubility is the amount of a substance that can be dissolved in a liquid to form a solution; it is typically represented as grammes of solute every litre of liquid. One fluid's (liquid or gas) solubility in another can be entire (e.g., methanol and water are completely miscible) or partial (e.g., oil and water barely mix). Generally speaking, "like dissolves like" (for instance, the aromatic hydrocarbons dissolves in one another but not in water).

A material's solubility in two solvents is measured by the distribution coefficient, which is used in some separation techniques (such as absorption and extraction). In general, as temperature rises, so do the dissolution rates of solids in liquids, while they fall as temperature rises and rise with pressure for gases.

Ca(OH)₂⇒ Ca²⁺ + 2OH⁻

s                 s         2s

Ksp = [Ca²⁺][OH⁻]²

Ca(NO₃)₂ ⇒ Ca²⁺ + 2NO₃⁻

0.1 M             0.1        0.2

1.3 x 10⁻⁶ = 0.1 . 4s²

s² = 3.25 x 10⁻⁶

s = 1.8 x 10⁻³

Therefore, 1.8 x 10⁻³ is the molar solubility.

To know more about solubility, here:

https://brainly.com/question/14366471

#SPJ2

Answer:

what do I need to do?..

..

Feather or bone when fall into food causing Physical  contamination.

Food waste, like a feather or a bone etc fall into food causing Physical  contamination because the contaminants such as feather and bone are mixed in the food physically not chemically. These contaminants can be removed through physical means such as with the help of hand.

Some contaminants mix with the food chemically means they react with the food and produce something new. Such type of contaminants are present in liquid form so we can conclude that feather or a bone etc when fall into food causing Physical  contamination.

Learn more about contamination here: https://brainly.com/question/3459685

Learn more: https://brainly.com/question/25889410

The formed cyclopropane has cis stereochemistry.

Chiral cyclopropane rings are important pharmacophores in pharmaceutical drugs and bioactive natural products, so libraries of these building blocks are an important resource for drug research and development campaigns.

A synthesis is a set of two or even more reactions that are designed to produce a specific end product. A synthetic step is a single reaction that has to be carried out independently of the other reactions in a synthesis.

The number of steps inside a synthetic sequence equals the number of reactions that need to be performed separately, i.e. the number of reactions that comprise the sequence.

By stereospecific addi-tion of singlet carbenes, cis cyclopropane could be synthesized from cis alkene. Using a Lindlar catalyst, cis alkene could be synthesized from alkynes.

To know more about the cyclopropane, here

https://brainly.com/question/29385628

#SPJ4

This problem is providing a mathematical expression which the result should be expressed with the correct significant figures. At the end, the result is 1209.0 because of the following:

In science, the use of significant figures is crucial as long numbers are not necessarily required when reporting a numerical value, for that reason the importance of reporting measurements with the correct number of significant figures.

In the case of additions, we perform the normal operation as the first step:

1204.2 +4.79613 = 1208.99613

Next, we round the result to the least number of decimal places, in this case one because 1204.2 has just one decimal place, unlike the 4.79613 which has five, so that we round the 8 up to 9 and leave a 0 as the only decimal place:

1209.0

Learn more about significant figures: https://brainly.com/question/11904364

Answer:

different versions of existing forms

Explanation:

The energy of the photons is \(4.56 \times 10^{-19} Joules\)

The formula for calculating the energy of photons is expressed as:

\(E = \frac{hc}{\lambda}\)

where

Substitute the values into the formula to have:
\(E=\frac{6.63 \times 10^{-34}\times 3.0 \times 10^8}{4.36 \times 10 ^ {-7}} \\E=4.56 \times 10^{-19} Joules\)

Hence the energy of the photons is \(4.56 \times 10^{-19} Joules\)

Learn more on energy of photons here; https://brainly.com/question/7464909

This question involves the concepts of Plank's Law.

The energy of the photons in Joules is "4.56 x 10⁻¹⁹ J".

According to Plank's Law, the energy of the photons is directly proportional to the frequency of those photons. Mathematically,

E = hν

where,

Therefore,

\(E = h\nu = \frac{hc}{\lambda}\\\\E=\frac{(6.625\ x\ 10^{-34}\ J.s)(3\ x\ 10^8\ m/s)}{4.36\ x\ 10^{-7}\ m}\)

E = 4.56 x 10⁻¹⁹ J

Learn more about Plank's Law here:

https://brainly.com/question/24947800

The ionic equation for dissolution and the solubility product (ksp) expression for each of the following slightly soluble ionic compounds.

(a) For PbCl2:
Dissolution: PbCl2 (s) → Pb²⁺ (aq) + 2Cl⁻ (aq)
Ionic equation: PbCl2 (s) ⇌ Pb²⁺ (aq) + 2Cl⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Pb²⁺][Cl⁻]²

(b) For Ag2S:
Dissolution: Ag2S (s) → 2Ag⁺ (aq) + S²⁻ (aq)
Ionic equation: Ag2S (s) ⇌ 2Ag⁺ (aq) + S²⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Ag⁺]²[S²⁻]

(c) For Sr3(PO4)2:
Dissolution: Sr3(PO4)2 (s) → 3Sr²⁺ (aq) + 2PO₄³⁻ (aq)
Ionic equation: Sr3(PO4)2 (s) ⇌ 3Sr²⁺ (aq) + 2PO₄³⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Sr²⁺]³[PO₄³⁻]²

(d) For SrSO4:
Dissolution: SrSO4 (s) → Sr²⁺ (aq) + SO₄²⁻ (aq)
Ionic equation: SrSO4 (s) ⇌ Sr²⁺ (aq) + SO₄²⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Sr²⁺][SO₄²⁻]

Learn more about solubility products (ksp)  at  brainly.com/question/17101393

#SPJ11

In a reaction sequence involving an alkyne and reagents, step 1) deprotonates the alkyne using a strong base, then forms a new carbon-carbon bond with an electrophilic alkene, and lastly adds an alcohol across the double bond via oxymercuration-demercuration. The major product is an alcohol, but its specific structure depends on the starting materials.

The given reaction sequence involves the following steps:

NaNH₂

Eti H-C=C—H

HgSO₄, H2SO₄, H2O, R-OH

Step 1) involves the treatment of an alkyne with NaNH₂, which is a strong base. The base will deprotonate the alkyne to form an anion.

Step 2) involves the reaction of the alkyne anion with Eti H-C=C—H. The alkyne anion acts as a nucleophile and attacks the electrophilic alkene, forming a new carbon-carbon bond.

Step 3) involves the addition of HgSO₄, H2SO₄, H₂O, and an alcohol (R-OH). This reaction is known as oxymercuration-demercuration and involves the addition of a mercuric acetate (Hg(OAc)₂) across the double bond of the alkene. This forms a mercurinium ion, which is then attacked by water in a nucleophilic addition reaction. Finally, the mercuric acetate is removed by reaction with sodium borohydride, resulting in the formation of the alcohol product.

The major product expected from this reaction sequence is the alcohol formed in step 3). The specific structure of the alcohol cannot be determined without more information about the starting materials.

To know more about the reaction sequence refer here :

https://brainly.com/question/4082154#

#SPJ11

Complete question :

Choose the major product that is expected for the following reaction sequence: 1) NaNH₂ 2) Eti H-C=C—H 3) HgSO H₂SO₄ H₂0 R 0. OH

Explanation:

T = 409.5 K, P = 1.50 atm: V = 22.4 L The ideal gas law is: PV = nRT where. P = pressure. V = volume n = number of moles.

In the following question, among the given options, The following molecules contain polar covalent bonds. The given molecules that contain polar covalent bonds are CHCl3, CO2, H2O, CCl4, and SO2. The polar molecules are H2O, SO2, and CHCl3. They all contain polar covalent bonds.

The nature of molecules can be determined by the electronegativity difference between the atoms in them. What is an electronegativity difference? The electronegativity difference refers to the difference in electronegativity between two bonded atoms. Electronegativity is the tendency of an atom to pull electrons toward itself. It is based on the atomic number and the distance of the valence electrons from the atomic nucleus in an element. The bonding can be categorized into three types- covalent, ionic, and metallic. Covalent bonds are formed by sharing of electrons between two non-metal atoms, ionic bonds are formed by the transfer of electrons between a metal and a non-metal atom, whereas metallic bonds are formed between two metals. A polar covalent bond is a bond formed by the unequal sharing of electrons between two non-metal atoms. In these bonds, one atom has a higher electronegativity value, and it pulls electrons toward itself. As a result, the electrons spend more time near the electronegative atom. Due to the unequal sharing of electrons, the molecule acquires a partial positive charge near the less electronegative atom and a partial negative charge near the more electronegative atom. The electronegativity difference between H and O in H2O is greater than in CHCl3, and that's why H2O is a polar molecule. The electronegativity difference between S and O in SO2 is greater than in CO2, making SO2 a polar molecule. In CHCl3, the electronegativity difference between C and Cl is greater, which makes it polar. Here are the polar molecules- H2O, SO2, and CHCl3.

For more such questions on polar molecules

https://brainly.com/question/17118815

#SPJ11

The advantage of square pitch is that the tubes are accessible for external cleaning and results in smaller pressure drop.

The difference between the outlet and inlet temperatures of the cooling water stream less the difference between the inlet and outlet temperatures of the process stream is the approach temperature utilised in a shell and tube heat exchanger.

Better heat transfer efficiency is indicated by a smaller temperature approach, but this may also lead to bigger pressure drops and larger exchangers.

A baffle's primary functions in a shell and tube heat exchanger are to: Hold tubes in place when manufacturing and operating them. Avoid the consequences of steam starvation, which are exacerbated by fluid velocity and exchanger length.

To know about approach temperature

https://brainly.com/question/5136955

#SPJ4

Answer:

diamond axe

Explanation:

??

Answer: Use it on your diamond pickaxe, natually a axe is good at chopping wood so you wouldnt need an enchantment, however Pickaxe would be good with something like Unbreaking or Fourtune or efficiency since you mine for 98% of your recources you use

Explanation:

3. the element is oxygen

Answer:

H2 + CaCl2 -> 2HCl + Ca

How many grams of HCl are made when 2.93 g of

Ca are made?

Explanation:

From the given balanced chemical equation, it is clear that:

2mol. of HCl and 1mol. of Ca are produced.

2mol. of HCl weighs --- 73.0g

1mol. of Ca weighs --- 40.0g

Hence,

73.0g of HCl and 40.0g of Ca are produced.

When 2.93g of Ca is produced then, how many grams of HCl will be produced?

\(=> 2.93g Ca * \frac{73.0g HCl}{40.0g Ca} \\=5.35g HCl\)

Hence, 5.35g of HCl is formed.

Answer: B) It presents the correct sequence of events in Earth’s history.

Explanation: edge 2021