a. Identify the different parts of the chemical equation below. (2 points) A(s) B(l) C(g) D(aq) 1. A: _________________________
2. B: _________________________
3. C: _________________________
4. D: _________________________
5. (s): _________________________
6. (l): _________________________
7. (g): _________________________

The value of 355mL of solution containing 6.31 ppm CaCO₃ is 0.00222 milli moles.

To convert 355mL of a solution containing 6.31 ppm CaCO₃ to mmol, you need to first calculate the mass of CaCO₃ in 355mL of the solution.

To do this, use the following equation:

Mass = Concentration x Volume.

Mass = 6.31 ppm x 355mL

= 2.22 mg CaCO₃.

Then, to convert the mass of CaCO₃ from mg to mmol, divide by the molar mass of CaCO₃, which is 100.08 g/mol. So, 2.22 mg CaCO₃ divided by 100.08 g/mol = 0.0222 mmol CaCO₃.

Therefore, 355mL of a solution containing 6.31 ppm CaCO₃ is equal to 0.0222 mmol.

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Answer:

Reactant B.

Explanation:

The mass of product that can be formed from reactant B is 33.2 is less than reactant A's (45.6).

Therefore, reactant B is the limiting reactant.

397.2 kcal.  is the bond dissociation energy for the breaking of all the bonds in a mole of methane, CH4.

One carbon atom makes up the molecule methane(CH4), which has four hydrogen atoms bound to the carbon by single bonds. It is a odorless, colorless, non-toxic, flammable gas and has a melting point of -161°C. CH4 performs three functions: fossil fuel, greenhouse gas, and bacterial metabolite.

For calculating the  bond dissociation energy for the breaking of all the bonds in a mole of methane, CH4.

do as follows.

heat of atomization of solid carbon =170.9kcal

and heat of atomization of four gaseous hydrogen is =4 × 52.1kcal

So, energy for breaking four carbon-hydrogen bonds

= 170.9 + (4 × 52.1) + 17.9 = 397.2 kcal.

Hence, 397.2 kcal.  is the bond dissociation energy for the breaking of all the bonds in a mole of methane, CH4

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Using the periodic table we gave that;

A - 20

B - 40

C - Ca

Again;

D - 10

E - 9

F - F

An atom's atomic number (represented by the letter "Z") tells how many protons are in its nucleus. It designates an element on the periodic table in a certain way.

The total number of protons and neutrons in an atom's nucleus is indicated by the mass number, which is denoted by the letter "A." It represents a rough estimate of an atom's mass.

Isotopes are forms of an element with the same atomic number but various masses brought on by differing neutron counts.

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Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products.

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Chemical reactions are an integral part of technology, of culture, and indeed of life itself. Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have been known and used for thousands of years. Chemical reactions abound in the geology of Earth, in the atmosphere and oceans, and in a vast array of complicated processes that occur in all living systems.

Explanation:

hope it help

plss brainlys me

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products

Explanation:

Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

The process of separating ions from a compound is called dissociation

Dissociation is defined as the process by which break into two or more components known as ions.

A typical example of a dissociation reaction is an ionisation reaction where by acids undergo dissociation, to produce hydrogen ions.

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Answer:

gain2 electrons

Explanation:

that the answer to that question

Learning difficulties, developmental delays, abdominal pain and vomiting are symptoms of lead poisoning in children.

Lead poisoning is a type of metal poisoning brought on by lead in the body. It is also referred to as plumbism and saturnism. The most delicate organ is the brain. Abdominal pain, constipation, headaches, irritability, memory issues, infertility, and tingling in the hands and feet are possible symptoms.

Lead exposure can happen from contaminated food, water, dust, air, or consumer goods. Children are substantially more likely to take lead indirectly by chewing on toys or other items that are painted with lead, increasing their risk of lead poisoning. Children are also more susceptible to absorbing lead than adults are.

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Option b. The ions and their charges in Mg3N2 are Mg2+ and N3-.

Mg3N2 is a chemical compound made up of three magnesium ions (Mg2+) and two nitrogen ions (N3-). In this compound, each magnesium ion has a positive charge of 2+ and each nitrogen ion has a negative charge of 3-.

The ions and their charges in Mg3N2 are Mg2+ and N3-.

The ions and their charges in Mg3N2 are found in option b. Mg2+ and N3-.
In the compound Mg3N2, magnesium (Mg) loses two electrons to form a stable 2+ ion, while nitrogen (N) gains three electrons to form a stable 3- ion. As a result, the correct ion charges for this compound are Mg2+ and N3-.

Hence, The correct option is b. Mg2+ and N3- are the ions and their charges in the compound Mg3N2.

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Ultraviolet, visible, and infrared light are all examples of non-ionizing radiation, which has the properties of both particles and waves.

Non-ionizing radiation is defined as a type of low-energy radiation that does not have enough energy to remove an electron (negative particle) from an atom or molecule. Generally, non-ionizing radiation includes visible, infrared, and ultraviolet light, microwaves, radio waves, and radiofrequency energy from cell phones.

Wave is defined as a disturbance or variation that transfers energy progressively from point to point in a medium and that may take the form of an elastic deformation or of a variation of pressure, electric or magnetic intensity, electric potential, or temperature.

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Explanation: I don't have an answer, as this seems to be a multiple choice, without any choices given, however, the four main ingredients essential to making beer is water, yeast, barley, and hops. If this doesn't answer your question, some ingredients included in beer, but not needed, is orange peels, cinnamon, and berries/fruits.

Comment on this if you need further information, if this didn't answer your question!

Answer:

How they get into the environment

0.129569. You have to divide the mass value by 1000.

Answer:

2.38 mol of Al

Explanation:

To find the number of moles in a substance, you simply divide by the atomic mass. In this case, the conversion table would look as follows:

\(\frac{64.1 g}{1}\) * \(\frac{1 mol}{26.98 g}\)

The gram units cancel, and you are left with the answer of about 2.38 moles of Aluminum.

The process that is not a way for carbon dioxide to reach the atmosphere is Photosynthesis; option C

The carbon cycle is a biogeochemical cycle that describes the processes by which carbon is recycled between the living and non-living components of the environment.

The processes by which carbon is removed from the atmosphere and the processes by which carbon is returned to the atmosphere work together to ensure there is a balance of carbon in the environment.

The processes by which carbon is returned to the atmosphere in the form of carbon dioxide include the following:

The processes by which carbon is removed from the atmosphere include the following:

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Complete question:

Which of the following is not a way for carbon dioxide to reach the atmosphere?

a. forest fires

b. respiration

c. photosynthesis

d. burning of fossil fuels

Answer:

The SI system : The international system of units.

It is a scientific method of expressing the magnitudes or quantities of important natural phenomena.

Benefits of SI system

Answer:

they are either donated to or taken by another atom to achieve octet arrangement

Explanation:

for example Na+ and Cl- .. they both have one extra and one less electron .

so they donate and receive one electron to/from each other to achieve the octet arrangement ..

Insufficient details to answer if the temperature doesn't change, what happens to the pressure inside the container. The answer is option (a).

The concept of pressure, which defines the amount of force delivered across a specific region, is crucial to physical theory. It is related to the concept of force, which describes how much pressure is applied to or removed from an object. Units of force per unit area are used to measure pressure, such as pounds per square inch (psi) or pascals (Pa). It has just magnitude and no direction because it is scalar.

Compression, tension, and shear are a few of the different methods used to create pressure. Fluid dynamics can also be measured using pressure, as in the case of a barometer. Numerous commonplace uses of pressure include water management, engineering of vehicles and aircraft, and medical procedures. Additionally crucial to understanding how people behave is pressure.

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Answer:

I believe the answer is 1. more specific.

Explanation:

Since the dichotomous key is used to identify a species, you would have to get down to the specifics, so specificity is required.

The formation of 3-chloro-2,2-dimethyl-1-butene, alcohol, ethyl acetylene, ester, and 2-methyl-2-cyclohexene-1-one are the products of the following reactions respectively.

The products and starting materials of the following reactions are,

1. SOCI₂ Stereochemistry: Nucleophilic substitution reaction would occur, in which the nucleophile would be chloride.

2. LiAlH(O⁺Bu) Stereochemistry: The reaction will occur with the reduction of an ester, in which the hydrogen of the hydride reagent would add to the carbonyl group of the ester.

3. NaOEt, EtOH Stereochemistry: A base-catalyzed reaction that would occur with the deprotonation of the acid present.

4. NaOH, H₂O Stereochemistry: A base-catalyzed reaction that would occur with the deprotonation of the acid present.

5. H⁺, heat Stereochemistry: The elimination reaction would occur in which the hydrogen of the alpha-carbon would be eliminated from the ring by forming a double bond.

The products of reactions:

1. The formation of 3-chloro-2,2-dimethyl-1-butene will occur.

2. The reduction of an ester would occur with the formation of

3. The formation of ethyl acetylene would occur.

4. The formation of an ester would occur.

5. The formation of 2-methyl-2-cyclohexene-1-one would occur.

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Answer:

Can you add more context to what exactly the question is?

Explanation:

An indicator of a chemical change which is shown in the image (see attachment) is: A.) formation of a gas.

A chemical change can be defined as a type of reaction that is typically characterized by a change in chemical composition and this leads to the formation of a new chemical substance.

This ultimately implies that, a chemical change would give rise to the chemical properties of matter by causing the transformation of one chemical substance into one or more different chemical substances.

In this context, we can infer and logically deduce that the formation of a gas is an indicator of a chemical change in the image (see attachment) shown below because the liquid turned to a gas when heat was applied.

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Complete Question:

Which indicator of a chemical change is shown?

A.) formation of a gas

B.) formation of a precipitate

C.) change in color

D.) change in energy

Answer:

Explanation: 30 min

Answer:

a

Explanation:

The main subject of study in thermodynamics is the energy changes in a reaction or a system.

Generally speaking, thermodynamics is a branch of science that deals with the study of heat, work, temperature, and the energy of systems and how this energy is converted from one form to another. The subject of thermodynamics is governed by a series of laws known as the law of thermodynamics.

The correct option is a.

Answer:

1.VOLUME– The amount of space an object takes up. Basic Unit (SI Unit) for Solids – Cubic Meter, m3. LENGTH/DISTANCE – The measurement between two points.

2.one particle per cubic meter.

3.it means it is heavier

4.In a liquid the particles are still close together but a little further apart than in a solid.

5.In gases the particles are much further apart than in solids or liquids.

Explanation:

thats all i can type lol

Answer:

10 electrons max

Explanation:

the d sublever has 5 orbital, so it can contain 10 electrons max

Explanation:

\(6.03 \: m \times \frac{1 \: km}{1000 \: m} = 0.00603 \: km\)

Answer:

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Answer:

Option d ,0.5M

Hope it helps

A known amount of compound refers to a predetermined quantity of a substance, while the analyte added to an unknown sample is a substance being tested for identification or measurement.

A known amount of compound signifies a specific and predetermined quantity of a substance. It is often used as a reference or control in experiments, allowing for comparisons and accurate measurements. This known compound is typically added to a sample with an unknown composition or concentration. In contrast, the analyte added to the unknown is the substance of interest being tested for identification or measurement.

The purpose of adding the analyte is to assess its presence, concentration, or any other desired characteristic. The comparison between the known compound and the analyte helps in determining and understanding the properties and composition of the unknown sample.

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Answer: aragon is in group 0

2. It’s a non metal

3. Group number

Explanation: