Vinegar has a concentration of 0.87mol/L acetic acid to make a 100ml solution it is diluted by a factor of 10 how do u find the original volume of vinegar and the concentration of acetic acid in the diluted solution

a. The precipitate formed for Pb2+ is PbCl2.

b. Adding excess chloride in the first step of the schema can lead to the formation of additional insoluble compounds.

c. The precipitate formed for Ba2+ is BaSO4.

d. A solution of HCl can be used in the above scheme rather than aqueous NaCl.

a. Pb2+ ions react with chloride ions (Cl-) to form a white precipitate of PbCl2 as shown by the chemical equation:

\(Pb^{2+} + 2Cl^{-} \rightarrow PbCl_{2(s)}\)

c. Ba2+ ions react with sulfate ions (SO4^2-) to form a white precipitate of BaSO4 as shown by the chemical equation:

\(Ba^{2+} + SO_{4}^{2-} \rightarrow BaSO_{4(s)}\)

b. Adding excess chloride in the first step of the schema can lead to the formation of additional insoluble compounds. For example, excess chloride ions can react with Ag+ ions (from the addition of AgNO3) to form a white precipitate of AgCl, which can interfere with the identification of other ions in the solution.

d. A solution of HCl can be used in the above scheme rather than aqueous NaCl. Both HCl and NaCl provide chloride ions that react with Pb2+ to form PbCl2.

However, HCl is a stronger acid than NaCl and can potentially react with other ions in the solution, which may affect the results of the qualitative analysis. Additionally, the use of HCl may require adjustments to the procedure to ensure that the pH of the solution remains in the appropriate range.

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0.00355moles is the mass of this sample of hydrogen gas when A student has measured the volume of a sample of hydrogen gas and has found that she has a total of 5.02 moles of the gas.

The chemical element hydrogen is represented by the letter symbol H and atomic number 1. The lightest element of all is  is hydrogen.

Fuel cells may produce energy, power, and heat using hydrogen. The two industries where hydrogen is currently most widely employed are fertilizer manufacturing and petroleum refining, with the developing markets of utilities and transportation.

Given:

volume of gas 5.02 moles

temp=293.15 K

Pressure= 0.025

Now putting the values accordingly

5.02  x 0.025 / 293.15 x 8.314472 =0.00355moles

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A balanced chemical equation demonstrates the Law of Conservation of Mass if: D. It shows that no atoms have been gained or lost during the reaction.

A chemical equation can be defined as the symbolic representation of a chemical reaction between two or more chemical elements, through the use of chemical symbols and formulas.

A balanced chemical equation is a chemical equation wherein the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side.

This ultimately implies that, both the charge on each atom and sum of the masses of the chemical compounds or elements in a chemical equation are properly balanced.

The Law of Conservation of Mass (LOCOM) states that mass is neither created nor destroyed in any chemical reaction.

Hence, a balanced chemical equation requires the same number of atoms on the reactant side and product side of a chemical reaction.

In conclusion, LOCOM is demonstrated by a balanced chemical equation if it shows that no atoms have been gained or lost during the chemical reaction.

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Answer:

I think that it's D

Explanation:

Answer:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

Answer:

Q = 1455 J

Explanation:

Given data:

Mass of block = 300 g

Initial temperature = 22.3 °C

Final temperature = 59.9°C

Specific heat of lead = 0.129 j/g.°C

Energy required = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1 =  59.9°C - 22.3 °C

ΔT = 37.6  °C

Q = 300 g × 0.129 j/g.°C ×  37.6  °C

Q = 1455 J

Answer:

There are 4 significant figures.

Explanation:

The significant figures are underlined :

0 . 0 9 0 5 0

Substances that heat up quickly normally have low specific heat capacities.

The specific heat capacity of a substance is the amount of energy required to raise the temperature of a given mass of the substance by one degree Celsius.

It is usually measured in joules per kilogram per degree Celsius (J/kgK).it is an important physical property of a material, as it determines the amount of energy required to change its temperature.

It is also useful for calculating the amount of energy required to heat or cool a given mass of the material. The specific heat capacity of a substance is related to its molecular structure and composition, as well as its phase.

For example, the specific heat capacity of liquids is generally higher than that of solids, and the specific heat capacity of gases is higher than that of liquids.

Additionally, the specific heat capacity of a substance can vary with temperature, pressure, and other environmental factors.

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Answer:

53.491 g/mol

Explanation:

Create the chemical compound and find each individual element's molar mass. Lastly, add them up.

Answer:

b i think im not fully sure

Explanation:

Answer:

C- Both isolation and low population

Explanation:

90 percent sure

The volume of this cube-shaped area can be calculated by multiplying its length, width, and height i.e. length x width x height.

Volume is defined as the area that any three-dimensional solid takes up. The shapes of these solids include cubes, cuboids, cones, cylinders, and spheres.

The cubic meter serves as its equivalent in the International System of Units. Given that it can be computed using lengths, it is not regarded as a fundamental unit of the SI. The liter is the most widely used measurement.

The cube's volume is equal to the edge's length raised by three.

Thus, the volume of this cube-shaped area can be calculated by multiplying its length, width, and height i.e. length x width x height.

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The pressure is not specified in the question, we cannot provide an exact volume. The volume of carbon dioxide produced depends on the pressure at which the experiment is conducted.

To determine the volume of carbon dioxide produced when 5.0 mol of sodium hydrogencarbonate is heated,

we need to use the balanced chemical equation for the decomposition reaction of sodium hydrogencarbonate (NaHCO3):

2 NaHCO3(s) → Na2CO3(s) + H2O(g) + CO2(g)

From the balanced equation, we can see that 2 moles of sodium hydrogencarbonate produce 1 mole of carbon dioxide.

Therefore, we need to find the number of moles of carbon dioxide produced from the 5.0 mol sample of sodium hydrogencarbonate.

Since we have 5.0 mol of sodium hydrogencarbonate, we can calculate the number of moles of carbon dioxide using the mole ratio:

5.0 mol NaHCO3 × (1 mol CO2 / 2 mol NaHCO3) = 2.5 mol CO2

to find the volume of carbon dioxide at room temperature, we need to use the ideal gas law equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

At room temperature, the temperature is approximately 298 K.

Assuming the pressure is constant, we can rearrange the equation to solve for V:

V = (nRT) / P

Plugging in the values:

V = (2.5 mol CO2) × (0.0821 L·atm/(mol·K)) × (298 K) / P

Since the pressure is not specified in the question, we cannot provide an exact volume. The volume of carbon dioxide produced depends on the pressure at which the experiment is conducted.

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Answer:

If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.

Answer:

2n² is a formula that determines that the maximum number of electrons should be accommodated in a particular shell.

Explanation:

First, calculate pH using the pOH:

14 - pOH = pH --> pH = 14 - 5.5 = 9.5

[H+] = 10^-pH = 10^-9.5 = 3.2 x 10^-10 M ≈ 3 x 10^-10 M (The answer should technically only be one sig fig, since the pOH is given to only one decimal place).

Answer:

Chemical properties describe the characteristic ability of a substance to react to form new substances; they include its flammability and susceptibility to corrosion.

Answer:

T-A-A-C-G-A or just TAACGA

Explanation:

A=T

G=C

C=G

T=A

This is the answer key to all complementary DNA strands.

Hope this helps you out.

3D view of H3O+

The stronger line means that the Hydrogen is closer to us in a 3D view, meanwhile the line with traces, or you cal also see as a weaker line, it means that the Hydrogen is farther from us in a 3D view

Lewis Structure of H3O+

0.60759572 gal  is the volume of acid in gallons  in a sample of hydraulic acid .

The gallon is a unit of measurement for volume and fluid capacity in both the US  units and the British imperial systems of measurement.

In SI base units, 1 Gal is equal to 0.01 m/s²

Since ,

1 L, l = 0.2641720524 gal

now, volume of acid in gallons is given by -

2.3 L, l = 2.3 × 0.2641720524 gal

=0.60759572 gal

Hence , 0.60759572 gal is the volume of acid in gallons  in a sample of hydraulic acid .

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If a sample of hydraulic acid has a volume of 2.3L. then its volume of acid would be 0.5059 gallons.

A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation. Any additional quantity of that type can be stated as a multiple of the measurement unit.

as given in the problem, A sample of hydraulic acid has a volume of 2.3L

4.54609 L = 1 gallon

1 L = 1/4.54609 gallons

2.3 L = 2.3 /4.54609 gallons

        =  0.5059 gallons  

Thus, the volume of acid in gallons would be 0.5059 gallons.  

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The molecular structure of the covalent molecules, as well as the electron dot diagrams of hydrogen, ammonia, hydrochloric acid, water, and methane, are found in the attachment.

Covalent molecules are molecules that are formed by covalent bonds between two or more atoms of the same or different elements.

The inorganic elements hydrogen, fluorine, chlorine, water, and ammonia as well as all organic compounds are examples of molecules with covalent connections.

A covalent bond is formed when two atoms exchange one or more pairs of electrons. The two atomic nuclei are concurrently drawing these electrons to them. When the difference between the electronegativities of two atoms is too tiny for an electron transfer to take place to create ions, a covalent bond is formed.

In electron dot diagrams, the valence electrons of an atom are represented by dots that are positioned all around the symbol of the element.

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Answer:

University of University of South New York Jersey has is a the best in the world the most important most important aspect of aspect of life is life and marriage is in my a lot more of a urban

Explanation:

C they would be arranged in a bent Orientation

Answer:

B

Explanation:

They would be arranged in a trigonal planar orientation.

The reaction of glucose in the presence of oxygen to carbon dioxide and water is \(C_{6} H_{12}O_{6} + O_{2}-- > CO_{2} +H_{2}O +energy\).

\(C_{6} H_{12}O_{6} + O_{2}-- > CO_{2} +H_{2}O +energy\)

Cells break down glucose to release energy through a process known as cellular respiration or respiration. Additionally emitted throughout the process are water and carbon dioxide. Whether there is oxygen present or not, this can occur. Aerobic respiration is the term for respiration that occurs when oxygen is present. Anaerobic respiration is the term used to describe a process that occurs without oxygen.

This process is an oxidation reaction because glucose and oxygen combine to create energy. This process releases energy and it is an exothermic reaction. The human body oxidizes glucose to provide energy. This reaction with oxygen is hence referred to as an oxidation reaction.

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Plants can be defined as multicellular organisms that has the ability to manufacture or produce their own food.

The multicellular organisms are those organisms that are made up of various cells which work together to maintain the functionality of the living organism.

The plant can be described as a multicellular organism as it contains cells such as:

The plants are also has the ability to manufacture their own food due to the presence of the green pigment called the chloroplast.

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The substances you identified acted as the acid and the base in this reaction is

H_2Se = H+ + HSe-

Hse- = H+ + Se-

H_2O + H+ = H_3O+

So we see that after accepting H+, H3O+ is the conjugate acid.

And H2Se here acts as the acid as it has dissociable H+ ions while SeH- acts as the conjugate base.

In the periodic table, hydrogen selenide is more acidic than Hydrogen sulphide. As the Hydrogen in Hydrogen selenide has more tendency to be dissociated.

Acid is the one which donates H+ ions and base is the one which accepts H+ ions. The conjugate base is the one which is left after the donation of the H+ ion. Conjugate acid is the one which is to be left after the acceptance of the H+ ion.

Also, water is less acidic than H2S.

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When energy is released from ATP (adenosine triphosphate), the leftover molecule is ADP (adenosine diphosphate) and a free inorganic phosphate group (Pi).

Adenosine triphosphate (ATP), energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.

1. ATP releases energy by breaking the bond between the second and third phosphate groups.
2. This reaction results in the formation of ADP (adenosine diphosphate) and a free inorganic phosphate group (Pi).
3. The released energy is used by the cell for various processes, while the ADP and Pi can be recycled to create more ATP when needed.

So, the leftovers when energy is released from ATP are ADP and Pi.

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Answer:

B) The subscript.

Explanation: In the chemical formula for water which is H20, the 2 which represents the number of hydrogen atoms is called subscript.

As we have progressed from using CFCs to HCFCs to HFCs, we have been: gradually eliminating the chlorine atoms from these refrigerant molecules. The correct option is (a).

This is because chlorine is a major contributor to the destruction of ozone in the stratosphere. By replacing the chlorine atoms with less harmful substitutes like hydrogen, we can reduce the impact on the ozone layer.

Additionally, we are also trying to produce refrigerants that will have minimal impact on global warming by reducing their greenhouse gas potential. While we are not necessarily trying to produce a refrigerant that is so heavy that it cannot make its way into the stratosphere, we are aiming to create refrigerants that have minimal impact on the ozone layer and the environment.

Furthermore, there is ongoing research to develop molecules that can produce ozone by reacting with oxygen and UV light in the stratosphere, but this is not the primary goal of refrigerant development.

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Explanation:

Chemical fertilizers raise crop yields, but their heavy usage has hardened the soil, diminished fertility, reinforced pesticides, contaminated air and water, and emitted greenhouse gases, posing health and environmental risks.

Answer:

N=35%. so 35/100*7 =2.45%

H=5.0 so 5/100*1=0.05%

o=60% so 60/100*8=4.8%