system a and system b contain the same substance. system a is a saturated vapor and is at the same temperature as system b. if system b has a lower pressure than a, what phase is system b in?

Answer: Gas

Explanation:

Gas. The arrows represent direction. They are moving around in the box extremely fast, and are not compact like a solid or liquid.

Answer:

my guess would be limestone disolving in water

Explanation:

Answer:

It is Limestone rocks dissolving in water

Explanation:

I did same exact quiz and I got it correct

According to the L/D classification system, all amino acids can be classified as either L-amino acids or D-amino acids.

L/D classification system is based on the configuration of the chiral carbon atom in amino acids, which determines their three-dimensional structure and properties.

In naturally occurring proteins, L-amino acids are the predominant form. This is because the enzymes involved in protein synthesis, such as ribosomes, preferentially recognize and incorporate L-amino acids into proteins. The L configuration refers to the arrangement of functional groups around the chiral carbon atom, resulting in a structure that is similar to the L isomer of glyceraldehyde.

D-amino acids, on the other hand, are relatively rare in nature but can be found in some peptides and bacterial cell walls. They have a configuration opposite to that of L-amino acids, with their functional groups arranged like the D isomer of glyceraldehyde. While D-amino acids are not typically used in protein synthesis, they can serve important roles in other biological processes, such as cell signaling and regulation.

In summary, amino acids can be classified as either L or D, based on the configuration of their chiral carbon atom. L-amino acids are predominant in nature and are primarily used in protein synthesis, while D-amino acids are less common but have unique biological roles.

Learn more about amino acids here: https://brainly.com/question/28362783

#SPJ11

The predominant form of CH3CH2NH3 at pH = 14 will be the ionized form.

This is because at high pH, the solution is basic, and there are excess hydroxide ions. The hydroxide ions remove a proton from the ammonium ion, forming ammonia and water. The chemical equation for this reaction is as follows:CH3CH2NH3+ OH- → CH3CH2NH2 + H2O

The predominant form of CH3CH2NH3 at pH = 14 is CH3CH2NH2. This is the ionized form of the compound, which has lost a proton to become an amine. The structure of the predominant form of CH3CH2NH3 at pH = 14 is shown below:CH3CH2NH2

learn more about ionized form here

https://brainly.com/question/9830462

#SPJ11

Answer:

It must be a part of a eukaryote

Explanation:

Eukaryotic cells are larger than prokaryotic cells and have a “true” nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes.

1. Ionic compounds are formed by the transfer of electrons that are positively and negatively charged, whereas, covalent compounds are formed by sharing the electrons. 2. In an ionic compound, bonding involves a metal and nonmetal, whereas, in the covalent compound, bonding is between nonmetals.

The two elements that are frequently used for making transistors are  niobium and columbium.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

Learn more about elements,here:

https://brainly.com/question/14347616

#SPJ1

Answer:

Calibration curves are used to understand the instrumental response to an analyte, and to predict the concentration of analyte in a sample.

To determine the number of molecules of carbon dioxide (CO2) produced from 32.75 g of C11H24, we need to use the concept of stoichiometry and the molar masses of the compounds involved.

First, we need to calculate the number of moles of C11H24 using its molar mass. The molar mass of C11H24 can be calculated by adding up the molar masses of carbon (C) and hydrogen (H) in the compound:

Molar mass of C11H24 = (11 * molar mass of C) + (24 * molar mass of H)

Next, divide the given mass of C11H24 by its molar mass to obtain the number of moles.

Number of moles of C11H24 = 32.75 g / molar mass of C11H24

Once we have the number of moles of C11H24, we can use the balanced chemical equation to determine the mole ratio between C11H24 and CO2. From the balanced equation, we can see that the coefficient of C11H24 is 1, and the coefficient of CO2 is 11.

So, the number of moles of CO2 produced is equal to the number of moles of C11H24 multiplied by the mole ratio:

Number of moles of CO2 = Number of moles of C11H24 * 11

Finally, we can use Avogadro's number (6.022 x 10^23) to convert the number of moles of CO2 to molecules by multiplying by the Avogadro constant:

Number of molecules of CO2 = Number of moles of CO2 * Avogadro's number

Performing these calculations will give you the number of molecules of carbon dioxide produced from 32.75 g of C11H24.

To know more about molecules of carbon dioxide click this link-

https://brainly.com/question/16608657

#SPJ11

The element in question is Avogadro's number, which is 6.022 x 10^23. Given that the mass of the element is 135 g and there are 3.01 x 10^24 atoms is 135 g / 3.01 x 10^24 atoms = 4.49 x 10^-23 g/atom

A fundamental object that is difficult to divide into smaller parts is known as an element. A substance that cannot be broken down by non-nuclear reactions is considered an element in chemistry and physics.

we can compare this atomic mass to the known masses of elements and find that the element in question is silver (Ag), which has an atomic mass of 107.87 g/mol.

To know more about Avogadro's visit:-

https://brainly.com/question/11907018

#SPJ11

In half-cell 3 of galvanic cells Y and Z, a redox reaction occurs, involving an oxidation process at the anode and a reduction process at the cathode. The overall cell reaction produces an electric current as electrons flow through the external circuit from the anode to the cathode, driven by a difference in reduction potential between the two half-cells.

Galvanic cells are electrochemical cells that generate electricity through spontaneous redox reactions. Each galvanic cell consists of two half-cells, each containing an electrode and an electrolyte solution. The half-cell where oxidation occurs is called the anode, while the half-cell where reduction occurs is called the cathode.

So, in half-cell 3 of galvanic cells Y and Z, a redox reaction occurs, involving an oxidation process at the anode and a reduction process at the cathode.

To know more about galvanic cells, refer

https://brainly.com/question/29765093

#SPJ11

longitudinal wave.... is the right answer

Answer:

To calculate the mass of KHP (potassium hydrogen phthalate) needed to use 35.00 mL of 0.400 M NaOH in a titration, we first need to determine the balanced chemical equation for the reaction between KHP and NaOH.

KHP reacts with NaOH in a 1:1 ratio to form potassium sodium phthalate (KNaC8H4O4) and water:

KHP + NaOH → KNaC8H4O4 + H2O

We can use this balanced equation to determine the moles of NaOH needed to react with 1 mole of KHP.

From the equation, we can see that 1 mole of NaOH reacts with 1 mole of KHP. Therefore, the number of moles of NaOH required to react with a given amount of KHP can be calculated using the following equation:

moles of NaOH = moles of KHP

Next, we need to calculate the number of moles of NaOH that will react with 35.00 mL of 0.400 M NaOH:

moles of NaOH = volume x concentration

moles of NaOH = 0.03500 L x 0.400 mol/L

moles of NaOH = 0.014 mol

Since we need the same number of moles of KHP, we can use this value to calculate the mass of KHP needed:

moles of KHP = 0.014 mol

molar mass of KHP = 204.22 g/mol

mass of KHP = moles of KHP x molar mass of KHP

mass of KHP = 0.014 mol x 204.22 g/mol

mass of KHP = 2.86 g

Therefore, you would need 2.86 g of KHP to use 35.00 mL of 0.400 M NaOH in a titration.

Answer:

See explanation

Explanation:

The to main chemicals that lead to acid rain are SOx and NOx. The major source of oxides of sulphur are power plants while the major source of oxides of nitrogen is the combustion of fossil fuels.

B. There are two types of acid rain; wet and dry. Wet type acid rain occurs when NOx and SOx combine with water vapour in the atmosphere and fall as precipitation while in dry type, wind deposits these acidic gases/matter on the surfaces of buildings, cars, trees etc. Rain water washes off these acidic deposits and the runoff is more acidic than the rain water.

C. Natural rain water has a pH of about 5.5 due to the fact that water dissolve CO2 in the atmosphere. This means that natural rain water is also slightly acidic. Rain water that dissolves SOx or NOx is often more acidic than these hence the term 'enhanced acid rain' may be used.

Again, since precipitation could be solid or liquid, the term 'acid deposition' is better.

The major organic product obtained from the given sequence of reactions is methoxymethane (CH3OCH3), which is an ether formed through an etherification reaction between hydroxymethyl and methoxy groups in the presence of sulfuric acid catalyst.

The major organic product obtained from the given sequence of reactions can be determined by analyzing each step:

a) hoch2: This is a hydroxymethyl group.

b) ch2oh: This is a methoxy group.

c) h2so4: This is sulfuric acid, which acts as a catalyst in this reaction.

When hoch2 reacts with ch2oh in the presence of h2so4, an ether is formed. The reaction is known as an etherification reaction.

The product obtained from this sequence of reactions is an ether, specifically methoxymethane (also known as methyl methyl ether or dimethyl ether), which has the molecular formula CH3OCH3.

Learn more about catalyst here :-

https://brainly.com/question/24430084

#SPJ11

The correct order of decreasing boiling points is: I > III > II. The closest answer choice is b) I > III > II.

The order of boiling points of the given compounds can be determined by analyzing their intermolecular forces, which are influenced by the molecular weight, polarity, and ability to form hydrogen bonds.

I. CH3CH2CH2CH2NH2 (1-amino-butane): This compound can form hydrogen bonds between the NH2 group and the adjacent molecules, and it also has a higher molecular weight than the other two compounds, which increases its boiling point.

II. CH3CH2OCH2CH3 (diethyl ether): This compound is polar due to the oxygen atom, but it cannot form hydrogen bonds, which reduces its boiling point compared to compound I.

III. CH3CH2CH2CH2OH (1-butanol): This compound is also polar and can form hydrogen bonds, but its molecular weight is lower than that of compound I, which reduces its boiling point.

For more question on boiling points click on

https://brainly.com/question/29233996

#SPJ11

correct question

arrange the following compounds in order of decreasing boiling point, putting the compound with the highest boiling point first.

I. CH3CH2CH2CH2NH2      

II. CH3CH2OCH2CH3  

III. CH3CH2CH2CH2OH  

a) I > II > III.

b) I > III > II.

c) III > I > II.

d) III > II > I.

Answer:

H-F bonds are the strongest.

As Fluorine is the most electronegative element.

The substances that have Delta Hf = 0 kJ/mol are O2(g), Br2(l), He(g), Fe(s).

Delta Hf = 0 is the standard enthalpy of any element in its most stable form is equal to zero.

When enthalpy is negative, the delta Hf is minus zero, which means the system releases heat.

When the system gains heat, the delta Hf is positive.

Thus, the substances are O2(g),  Br2(l), He(g), Fe(s).

Learn more about Delta Hf, here:

https://brainly.com/question/25912291

Answer:

1,4,5,6

Explanation:

Answer:

Explanation:

0.125

The pH of the solution with a molarity of 3.8 × \(10^-^3\) is approximately 2.42. To calculate the pH, a scientific calculator or logarithmic tables is used. By evaluating the expression, the pH of the solution is approximately 2.42.

To determine the pH of a solution with a molarity of 3.8 × \(10^-^3\)), one need to use the equation relating pH and the concentration of hydrogen ions (H+):

pH = -log[H+]

In this case, the concentration of hydrogen ions ([H+]) is equal to the molarity of the solution.

Substituting the given molarity value into the equation, one can have:

pH = -log(3.8 × \(10^-^3\)))

So, to calculate the pH, one can use a scientific calculator or logarithmic tables. By evaluating the expression, the pH of the solution is approximately 2.42.

Learn more about pH here

https://brainly.com/question/19243610

#SPJ1

Explanation:

to see how a change in a reactant concentration would affect the speed of the chemical reaction

Answer:

D Sunlight

Explanation:

Hoped that helped :)

237 nm is slightly lower than the experimentally observed value of 240 nm, which suggests that the estimation of the length of the π-network by adding bond lengths for this molecule is relatively accurate.

Step 1:

To calculate the energy levels of the π-network in hexa-triene, C6H8, using the particle in the box model, we need to first calculate the box length of the molecule. Assuming that the molecule is linear, we can use the values 135 and 154 pm for σ and π bonds, respectively. The box length for this molecule is then given by 289 pm.

Step 2:

To calculate the wavelength of light required to induce a transition from the ground state to the first excited state, we need to use the equation:
λ = h/√2mEL
where h is Planck’s constant, m is the particle’s mass, E is the energy difference between the ground and first excited state, and L is the box length of the molecule.

step 3:

Using the values above, we can calculate the wavelength of light required to induce a transition from the ground state to the first excited state as 237 nm. This is slightly lower than the experimentally observed value of 240 nm, which suggests that the estimation of the length of the π-network by adding bond lengths for this molecule is relatively accurate.

For more such questions on bond lengths , Visit:

https://brainly.com/question/12648422

#SPJ11

Heat capacity of a substance or system is defined as the amount of heat required to raise its temperature through 1°C. It is denoted by C. Heat capacity is an extensive property whose value depends on the amount of material present.

The heat required to raise the temperature of a sample of mass 'm' having specific heat c from T₁ to T₂ is given as:

q = mc (T₂ - T₁)

q = 55 × 4.186 ( 45 - 25)

q = 4604.6 J

One calorie = 4.184 J

q = 4604.6 / 4.184

q = 1100.52 calories

To know more about heat capacity, visit;

https://brainly.com/question/29766819

#SPJ1

W = -P_ext ΔV

545 J = -P_ext × (-2.50 L)

545 J = 2.50 P_ext L

P_ext = -218 Pa

IG: whis.sama_ent

The phenotype that is most indicative of a natural killer cell is b. CD2+ CD3- CD11b+ CD16+.

Natural killer cell are characterized by the lack of CD3, expression of CD16 and CD56, and the presence of CD2 and CD11b. CD33 is a marker for myeloid cells, and CD57 is a marker for mature NK cells and T cells. CD19, CD20, and CD22 are markers for B cells.

An immune system component called a lymphocyte, or natural killer (NK) cell, is a type of white blood cell. They are referred to as "natural" killers because they can recognise and kill target cells without the need for antigen activation. Instead, they can quickly identify and destroy diseased, cancerous, stressed, or otherwise damaged cells. To destroy their prey, NK cells employ a number of techniques, including as the production of poisonous granules and the triggering of apoptosis. They can create cytokines that stimulate other immune cells, and they also play a part in controlling the immunological response.

Learn more about natural killer cell here:

https://brainly.com/question/16240473

#SPJ11

Answer:

190

Explanation:

Gold has atomic number of 79, which is the number of protons.

Mass number = #protons + #neutrons = 79 + 111 = 190