A piece of metal is composed of atoms. Each atom in the metal contains 29 protons. How is the metal classified?

The formula is used for calculating speed. D stands for distance, T stands for time. Full formula is S=D/T

Answer:

Producing disease-resistant crops

Explanation:

B. is the Right Answer Hope this helps!

Among all the given options, the correct option is option B.  Producing new medicines from bacteria is the most benefits for North Carolina agriculture.

The human genome's sequencing has sparked a biotechnology revolution that will have an impact on every area of our lives, including our environment, diet, and methods of sickness detection and treatment.

Already, biotechnology has raised the standard of living for us. The scope as well as volume of biotechnology's effects will increase in the coming decade as the rate of technological advancements increases.

The use of molecular biology innovations for applications in animal and human health, agriculture, the environment, and speciality biochemical manufacture is the widest definition of biotechnology.  Producing new medicines from bacteria is the most benefits for North Carolina agriculture.

Therefore, the correct option is option B.

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The element X that could be responsible for the blue color in aqueous solutions of compounds is (2) copper.

Copper compounds are known to exhibit various shades of blue in aqueous solutions. This is due to the presence of copper ions (Cu2+) which absorb certain wavelengths of light, particularly in the blue region of the electromagnetic spectrum. The absorption of light by copper ions results in the reflection of blue light, giving the solution its characteristic blue color.

Copper is a transition metal that can form different oxidation states, including Cu2+. When copper ions are present in solution, they can interact with water molecules or other ligands to form complex ions, which contribute to the blue color. Copper compounds such as copper sulfate (CuSO4) and copper nitrate (Cu(NO3)2) are examples of substances that produce blue solutions when dissolved in water.

In contrast, carbon, sodium, and potassium compounds generally do not exhibit a blue color in aqueous solutions. Carbon compounds are typically colorless or exhibit other colors depending on their chemical structure. Sodium and potassium compounds are often colorless or may produce solutions with a slight yellow tint, but they do not typically produce a strong blue color.

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Answer:

This is because metals like platinum,gold and silver are noble metals,they do not easily mix with impurities such as silica,potassium etc. And even if they do mix it can be easily separated by adding a acid to it. Hence, these metals are present in free state.

Out of the given molecules and ions, CO32- will exhibit delocalized pi (π) bonding.

Delocalized π bonding occurs when the π electrons in a molecule are not confined to a single bond between two atoms, but instead spread out over multiple atoms or a larger area of the molecule. In CO32-, the central carbon atom has a double bond with each of the two oxygen atoms and a single bond with the third oxygen atom.

The π electrons in these double bonds are shared between all three oxygen atoms, creating a delocalized π bond. This delocalization allows for greater stability and makes the molecule less reactive. The other molecules and ions listed do not have delocalized π bonding because their π electrons are confined to a single bond between two atoms.

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74 mph (64 KT)

Explanation:

when the wind exceeds 74 mph (64 KT), the storm is considered to be a hurricane.

Answer:

Explanation:

Some substances are poor conductors because they do not possess freely moving ions but they conduct electricity in their aqeous solution beacuse their ions become free to move when dissolved in water. Common example of such substances is NaCl which is commnly called table salt

Answer: To calculate the number of molecules and atoms in a water drop, you need to know the chemical formula of water. There are two atoms of hydrogen and one atom of oxygen in each water molecule, making the formula H 2 O. So, each molecule of water contains 3 atoms. Molar Mass of Water

Explanation: Hope this helps!

From: Kenma! ^^

Answer:

the answer is 3 atomsExplanation:

Answer:The atoms in gases are far apart from each other, so they are much more disordered than either liquids or solids.

Explanation:

The value of the expression 22 - 80% for one month can be calculated as follows:22 - 0.8 * 22 = 22 - 17.6 = 4.4Rounding off 4.4 to two decimal places gives 4.40.So, the answer to the expression 22 - 80% rounded to two decimal places is 4.40

.The value of the expression 2212% for one month can be calculated as follows:2212/100 = 2.64Rounding off 2.64 to two decimal places gives 2.64.

So, the answer to the expression 2212% rounded to two decimal places is 2.64.The value of the expression 95.00% for one month can be calculated as follows:95.00/100 = 0.95Rounding off 0.95 to two decimal places gives 0.95.So, the answer to the expression 95.00% rounded to two decimal places is 0.95.

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Answer:

82.1 kilograms

Explanation:

divide 181 by 2.205 to convert

Answer:

B wind blowing away sediment

Explanation:

Erosion is the process whereby soil, nutrients, particles are transported away from one place to another via agents like water and wind. Generally, erosion exercises its effect on the surface of the soil.

Since erosion can occur as a result of action of water or wind on the surface of the Earth, "wind blowing away sediment" is an example of erosion among the other options listed in the question.

Advantage: mining asteroids in space would be able to gain a larger amount resources from one asteroid then a mine for 1 month and it would be able to some what stop the destruction of earth's natural resources

Disadvantage: finding and asteroid close to earth then stopping it and mining will be very expensive and transporting it back even if calculations were in place to these things then it would will take time for and asteroid to come near

Answer:

Gut bacteria are an important component of the microbiota ecosystem in the human gut, which is colonized by 1014 microbes, ten times more than the human cells. Gut bacteria play an important role in human health, such as supplying essential nutrients, synthesizing vitamin K, aiding in the digestion of cellulose, and promoting angiogenesis and enteric nerve function. However, they can also be potentially harmful due to the change of their composition when the gut ecosystem undergoes abnormal changes in the light of the use of antibiotics, illness, stress, aging, bad dietary habits, and lifestyle. Dysbiosis of the gut bacteria communities can cause many chronic diseases, such as inflammatory bowel disease, obesity, cancer, and autism. This review summarizes and discusses the roles and potential mechanisms of gut bacteria in human health and diseases.

Explanation:

I hope it isn't wrong

The guideline that is recommended for a nurse who is collecting a stool specimen of a client suspected of having clostridium difficile includes the following procedures:

1. Use a new pair of gloves for each step in the process of specimen collection, removing the old gloves each time.

2. A bedpan is provided by the nurse for the client to have a bowel movement.

3. The bedpan is then thoroughly washed, disinfected, and dried.

4. The client's buttocks are washed with warm, soapy water and dried with a clean towel.

5. The nurse wears gloves to remove the stool specimen from the bedpan.

6. The specimen is placed in a sterile container and taken to the laboratory as soon as possible.

7. The nurse takes care to avoid touching any part of the specimen container that will come in contact with the laboratory personnel.

The nurse should adhere to standard infection control procedures to protect both the nurse and the client from potential infection. The nurse should make certain to wash their hands before and after the procedure. A stool sample is usually the best way to confirm the diagnosis of Clostridium difficile infection. It can be challenging to diagnose C. difficile infection in the early stages.

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Considering the two acids and bases involved, the reverse reaction is favored.

The term reversible reaction refers to a reaction that can go either forward or backwards depending on the conditions of the reaction.

We must recall that acetic acid is a weak acid hence the equilibrium position would always lie towards the left hand side of the equation. Hence considering the two acids and bases involved, the reverse reaction is favored.

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Answer:

0.086

Explanation:

got it on acellus

The mass of the dry solute recovered from the given data is 0.086 g.  Option C

To determine the mass of the dry solute recovered, we need to subtract the mass of the boat from the mass of the boat with the dry solute.

Given the data provided:

Boat Mass: 0.730 g

Boat + Solution: 0.929 g

Boat + Dry: 0.816 g

To find the mass of the dry solute, we subtract the boat mass from the boat + dry mass:

Mass of Dry Solute = (Boat + Dry) - (Boat Mass)

Mass of Dry Solute = 0.816 g - 0.730 g

Mass of Dry Solute = 0.086 g

Therefore, the correct answer is c) 0.086 g.

The mass of the dry solute recovered from the given data is 0.086 g. It is important to note that the mass of the dry solute is obtained by subtracting the mass of the boat from the mass of the boat with the dry solute, as the boat mass represents the weight of the empty boat or container used in the experiment.

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physical changes are those changes which can be reversed in their previous form like ice to water

chemical changes are those changes which cannot be reversed in their previous form

1. the change which are reversable are known as physical change

2.no new substance are formed

3.no change in chemical nature of the substance

4. example: • melting of ice

• tearing of paper etc.

1.this are irreversible this can't be reverse

2.new substance are formed

3.it results form a chemical reaction

4. example: • burning of wood

• rusting of iron etc.

hope it helps you :)

As the volume is decreased and the pressure is increased to the given value, the temperature of the gas increases to 81.67°C.

Given the data in the question;

Combined gas law brings together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that "the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

\(\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\)

We substitute our given values into the expression above to determine the new temperature.

\(\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\\\P_1V_1T_2 = P_2V_2T_1\\\\T_2 = \frac{P_2V_2T_1}{P_1V_1}\\T_2 = \frac{1.0atm\ *\ 0.4L\ *\ 350.15K}{0.789474atm\ *\ 0.5L} \\\\T_2 = \frac{140.06LatmK}{0.394737Latm}\\ \\T_2 = 354.82K\\\\T_2 = 81.67^oC\)

Therefore, as the volume is decreased and the pressure is increased to the given value, the temperature of the gas increases to 81.67°C.

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Answer:

22.3 kPa

Explanation:

Without knowing the specific details of problem 7, it is difficult to give a precise answer to this question. However, if we assume that problem 7 was referring to the atmospheric pressure of air at sea level, which is approximately 101.3 kPa, we can use the partial pressure of oxygen in air to estimate the partial pressure of oxygen near a blast furnace.

In air, the partial pressure of oxygen is approximately 21% of the total atmospheric pressure, which means that the partial pressure of oxygen in air at sea level is approximately 0.21 x 101.3 kPa = 21.2 kPa.

If the air near a blast furnace contains 22% oxygen, we can estimate the partial pressure of oxygen as follows:

Partial pressure of oxygen = 22% x Total pressure

Assuming the total pressure is the same as atmospheric pressure at sea level, we can estimate the partial pressure of oxygen as:

Partial pressure of oxygen = 22% x 101.3 kPa = 22.3 kPa

So the partial pressure of oxygen near a blast furnace, assuming the air contains 22% oxygen, would be approximately 22.3 kPa.

Answer:

They are prokaryotes and both have tough cell walls. ◦ The cytoplasm contains ribosomes, but no organelles. ◦ There is no nucleus for organisms in this category.

Explanation:

Answer:

rock- non living

( Prokaryotes don't have a nucleus)

Explanation:

There were approximately 128.94 g of ZnSO4 and 109.34 g of CoSO4 present in the original solution.

Electroplating is the process of coating a metal object with a thin layer of another metal by means of electrolysis. In an electrolytic cell with a solution of a salt of the metal to be deposited, the item to be plated is made the cathode (negative electrode).

The electroplating of Zn and Co from the solution involves the transfer of electrons from the cathode to the metal ions in the solution, which results in the deposition of the metals on the cathode. The amount of electricity required for this process is proportional to the amount of metal ions present in the solution, which in turn is proportional to the mass of the metals deposited.

Let's first calculate the moles of electrons transferred in the electroplating reaction:

1.436 F × (1 mol e⁻/1 F) = 1.436 mol e⁻

Since the number of electrons transferred is the same for both Zn and Co, the ratio of the moles of Zn and Co deposited should be the same as the ratio of their atomic masses. The atomic masses of Zn and Co are 65.38 g/mol and 58.93 g/mol, respectively, so the ratio of their masses is:

65.38 g/mol ÷ 58.93 g/mol ≈ 1.11

This means that for every 1.11 moles of Zn deposited, 1 mole of Co is deposited.

Let's assume that x moles of ZnSO4 and y moles of CoSO4 were present in the original solution. Then we can set up the following equations based on the balanced electroplating reaction:

2 e⁻ + Zn²+ → Zn (s)

2 e⁻ + Co²+ → Co (s)

The total number of moles of electrons transferred in the electroplating reaction is:

1.436 mol e⁻ = 2 mol e⁻/mol Zn × x mol ZnSO4 + 2 mol e⁻/mol Co × y mol CoSO4

Simplifying and solving for y:

y = (1.436 mol e⁻ - 2 mol e⁻/mol Zn × x mol ZnSO4) / (2 mol e⁻/mol Co)

y = 0.718 mol CoSO4

Since the ratio of the moles of Zn to Co deposited is 1.11, we can calculate the moles of ZnSO4 from the moles of CoSO4:

x = (1.11 mol Zn/mol Co) × (0.718 mol CoSO4) = 0.798 mol ZnSO4

Finally, we can calculate the masses of ZnSO4 and CoSO4:

mass of ZnSO4 = 0.798 mol × 161.47 g/mol = 128.94 g

mass of CoSO4 = 0.718 mol × 152.06 g/mol = 109.34 g

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Answer:

CO₂

Explanation:

The product of the reaction is CO₂.

In a chemical reaction, the product is the substance usually found on the right hand side of the expression.

  Reaction equation is given as;

          C  +  O₂  →  CO₂  

In this reaction, C and O₂ are the reactants

  CO₂ is the product of the reaction.

Answer:

we know that it was the vinegar and baking soda because gas had been created, the gas was held within the bubbles. the gas that was created was called Carbon Dioxide or CO2

Answer:

Explanation:

The Hawaiian Islands were literally created from lots of volcanoes—they're a trail of volcanic eruptions. In the case of the Hawaiian Islands, the Pacific Plate is continually moving to the northwest over the Hawaiian hot spot. This movement caused the Hawaiian chain of islands to form.

Answer:

Explanation:

4

1) Option 3. Electrons. The type of subatomic particle that most directly determines the chemical reactivity of an atom is electrons.

Electrons are negatively charged particles that occupy the outermost energy level, or valence shell, of an atom. The number of electrons in this valence shell, as well as the arrangement of these electrons, determines the chemical properties of an atom and its reactivity. For example, an atom that has a full valence shell, with 8 electrons in its outer energy level, is considered to be unreactive and unlikely to form chemical bonds. On the other hand, an atom with a partially filled valence shell, such as carbon, nitrogen, or oxygen, is likely to participate in chemical reactions and form bonds with other atoms.

2) carbon (atomic number 6, atomic mass 12) usually makes 4 covalent bonds in organic molecules

Carbon, with atomic number 6 and atomic mass 12, usually forms 4 covalent bonds in organic molecules. This is due to the presence of 4 valence electrons in the outermost shell of the carbon atom. In covalent bonding, atoms share electrons to form a bond and complete their outermost electron shell. Carbon can bond with other elements such as hydrogen, oxygen, nitrogen, etc. to form complex organic molecules such as carbohydrates, lipids, proteins, etc. The ability of carbon to form multiple covalent bonds with other atoms is what makes it the backbone of all living organisms and the central component of organic chemistry. The number of covalent bonds an atom can form is directly related to the number of valence electrons it has, which in turn determines its chemical reactivity.

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If a wave has a frequency of 7.20 x 10^14 Hz and travels at the speed of light (speed of light = 3.0 x 10^8 m/s), the wavelength is 0.42 × 10⁻⁶ m.

The term wavelength of light is defined as the distance between the two successive crests or troughs of the light wave. Wavelength is denoted by the Greek letter lambda (λ).

Given:

frequency  = 7.20 x 10^14 Hz

speed of light = 3.0 x 10^8 m/s

Wavelength = ?

Wavelength = speed of light/ frequency

λ = ν / f

= 3.0 x 10^8 / 7.20 x 10^14

= 0.42 × 10⁻⁶ m

Thus, if a wave has a frequency of 7.20 x 10^14 Hz and travels at the speed of light (speed of light = 3.0 x 10^8 m/s), the wavelength is 0.42 × 10⁻⁶ m.

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The gases that can work well in a thermoacoustic generator are inert gases and inert gases are found in group 8 of the periodic table.

A thermoacoustic generator is used to convert acoustic or sound energy into electrical energy. This generator comprises of thermoacoustic engine coupled with an alternator.

Thermoacoustic devices such as thermoacoustic engine, work well on noble or inert gases such as helium and argon.

The inert gases or noble gases are found in the group 8 of the periodic table.

Example of group 8 elements (noble gases);

Thus, the gases that can work well in a thermoacoustic generator are inert gases and inert gases are found in group 8 of the periodic table.

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