What is the total number of atoms in the molecule HNO3?​

The type of plant should be ginkgo.

Ginkgo biloba is a popular herbal supplement used to improve memory and prevent dementia, presumably due to its antioxidant properties or anti-amyloid aggregation effects.

Dementia is a term used to describe when a person's loss of certain behavioral abilities, such as remembering, thinking, and reasoning, interferes with their daily activities and life.

Dementia occurs when neurons in the brain stop functioning, lose their ability to communicate with other cells in the brain, and die. When people develop dementia, they may have problems with a variety of cognitive functions.

Aside from its decorative aspects, ginkgo biloba is a medical herb with numerous benefits. The tree is frequently used to treat a variety of ailments, including:

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When you are taking a test, you are awake and alert, which means that your brain is currently generating beta waves (Option b).

The beta waves are a special type of brain waves observed by using electromagnetic devices (especially in physiology).

This type of waves are dominant during conscious thought as well as during cognitive logical thinking processes.

In conclusion, when you are taking a test, you are awake and alert, which means that your brain is currently generating beta waves (Option b).

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Answer:

What is your question?

Explanation:

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Answer:

Stan TXT

Explanation:

because they are amazing

More acid solution has red colour, more basic solution has purple colour whereas neutral solution has green colour.

As the solution becomes more acidic, the color of the solution changes from green toward red.

As the solution becomes more basic, the color changes of the solution from green toward purple.

Green color of the solution represents a neutral solution having pH 7.

So we can conclude that More acid solution has red colour, more basic solution has purple colour whereas neutral solution has green colour.

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A positive correlation does not necessarily indicate a causal link, and a negative correlation does not necessarily indicate a causal link. Option A

In research, correlation often indicates that some kind of relationship does exist between the variables. This does not actually mean causation. The correlation could be positive or negative.

It should be known that; a positive correlation does not necessarily indicate a causal link, and a negative correlation does not necessarily indicate a causal link. Option A

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Answer: chemistry

Explanation: see definition on wikipedia.

The standard temperature and pressure conditions enthalpy is usually measured under are 1kPa and 273K (option A).

Enthalpy in thermodynamics is a measure of the heat content of a chemical or physical system.

Enthalpy is the sum of the internal energy and pressure times volume It can be calculated using the following formula:

H = E + P V

Where;

H = Enthalpy

E = internal energy

P = pressure

V = volume

However, the enthalpy of a substance is usually measured under standard temperature and pressure.

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The element should be placed in the column for metalloids. Option A

We know that the properties of metals can be used to identify an unknown substances as a metal. We know that metals are able to react with acids to liberate the metal salt and hydrogen gas. Metals do not react with bases because they can not accept electrons.

Metalloids are generally amphoteric in nature. They can react with both the acid and the basses to form compounds. The nonmetals do not react with acid or base.

Looking at the result, we are told that the entry in the second row have the entries  nothing, nothing, nothing. If this is the outcome, then it follows that the element should be placed in the column for metalloids.

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Answer: A

Explanation:

Explanation:

1. The gaseous exchange in the lungs occurs in the alveoli. They are tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.

The reaction is based on law of conservation of mass.

The balanced chemical equation is

[tex]$4 \mathrm{NaI}+\mathrm{Pb}\left(\mathrm{SO}_{4}\right)_{2} \rightarrow \mathrm{PbI}_{4}+2 \mathrm{Na}_{2} \mathrm{SO}_{4}$[/tex]

Every balanced chemical equation follows the direction of conservation of mass. This law states that mass can neither be completed nor can be destroyed but it can only be transformed from one condition to another form. This law likewise states that the total number of individual atoms on the reactant side must be comparable to the total number of individual atoms on the product side.

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The specific heat capacity of the metal is determined as 0.76 J/g⁰C.

mass = density x volume

mass = 342 ml x 1 g/ml = 342 g

Apply the law of conservation of energy;

Heat lost by the metal = Heat gained by the calorimeter + heat gained by water

(93.4)(85 - 29.3)c = (8.29)(29.3)  + (342)(4.186)(29.3 - 26.7)

5,202.38c = 3,965.088

c = 3,965.088/5,202.38

c = 0.76 J/g⁰C

Thus, the specific heat capacity of the metal is determined as 0.76 J/g⁰C.

The complete question is below;

93.4 g of a metal is heated to 85.0 C in a hot water bath, then dropped into a calorimeter containing 342 ml of water (d 1.00 g/mL) at 26.7 . The equilibrium temperature was found to be 29.3 C. Calculate the specific heat of the metal with proper units. (C.cal 8.29 J/c)

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The compound that is formed is calcium hydroxide.

When limestone is decomposed at a high temperature, calcium oxide is formed as the residue.

[tex]CaCO_3 --- > CaO + CO_2[/tex]

When the calcium oxide residue is treated with water, a calcium hydroxide solution is formed.

[tex]CaO + H_2O -- > Ca(OH)_2[/tex]

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Thyroid hormone contains the mineral iodine (option I). Details about thyroid hormone can be found below.

Thyroid hormone is the hormone produced by the thyroid gland of the body, which is a large butterfly-shaped endocrine gland situated on the front of the neck that produces various hormones.

The thyroid hormone is responsible for regulating metabolism, which controls the amount of calories burnt in a day.

One of the major minerals found in the thyroid is iodine. The thyroid gland absorbs iodine from the bloodstream, and then stores it to aid in the production of thyroid hormones.

Therefore, the thyroid hormone contains the mineral iodine.

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Answer:

8.72×10^5

Explanation:

Answered it in the comments! ^^

Answer:

hydrochloride acidic maby

Explanation:

please make me as brainlist please make me as brainlist please please please please please

Carbon monoxide is the byproduct of fuel combustion that may result in death if such combustion equipment is not properly vented and is denoted as option D.

This is a compound which is derived from the combustion of carbon in insufficient supply of oxygen. Carbon monoxide when inhaled replaces the oxygen content in the body which is dangerous because oxygen is needed for the survival of the cells of the body.

The carbon monoxide is usually formed when there is no properly vent thereby resulting in insufficient supply of air. This therefore results in its presence in the body results in the death of cells of the body system.

This is therefore the reason why carbon monoxide was chosen as the most appropriate choice.

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In sharp contrast to elimination reactions, addition reactions are generally favored at low temperature, because enthalpy term is more likely to be negative at such temperatures.

An addition reaction is an organic reaction occur when two or more molecules combine to form a larger molecule without the loss of any atoms present in reactant. Addition reaction is favored at low temperature.

Elimination reaction is a type of organic reaction where many atoms either in groups or pairs are removed from a molecule. Elimination reaction is favored at high temperature.

Thus from the above conclusion we can say that In sharp contrast to elimination reactions, addition reactions are generally favored at low temperature, because enthalpy term is more likely to be negative at such temperatures.

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Answer: 2.52 M

Explanation:

The product of molarity (moles/litre) and volume in litres yields moles, and the numbers of moles in two solutions means dilute and concentrated are equal, which is expressed by the following equation: 

[tex]M_1V_1=M_2V_2[/tex]

[tex]$$Given that\\M $1=12.0 \mathrm{M}$ or mole $/ \mathrm{L}$\\$\mathrm{V} 1=420 \mathrm{ml}$\\$\mathrm{M} 2=$ ?\\$\mathrm{V} 2=2.0 \mathrm{~L}$ or $2000 \mathrm{ml}$\\\\$\mathrm{M} 1 \mathrm{~V} 1=\mathrm{M} 2 \mathrm{~V} 2$\\$\mathrm{M} 2=\mathrm{M} 1 \mathrm{~V} 1 / \mathrm{V} 2$\\$=12.0 * 420 / 2000$\\$=2.52 \ \mathrm{M}$[/tex]

Answer:

The most basic answer to this is that the mitochondria generates energy for the cell's power needs.

But... (elaborated in explanation.)

Explanation:

As you may know, the mitochondria is the powerhouse of cells.

The mitochondria can ALSO identify cell death, and determine which cells (dead) must be destroyed.

The mitochondria helps regulate calcium storage, but quickly absorbing calcium ions until needed.

And lastly, the mitochondria can also help generate heat. A process called proton leak. This is known as non-shivering thermogenesis.

The formula of the compound will be  [tex]Mg_2Ga[/tex]

The compound contains magnesium and gallium. The symbol and magnesium and gallium is Mg and Ga respectively.

Magnesium content is 41.1%

Gallium content is 58.9%

First, find the number of moles of each element in the compound by dividing their percentage compositions with their respective molar weights.

Mg = 41.1/24.505 =1.6772

Ga = 58.9/69.723 = 0.8448

Next, divide each number of moles by the smallest number of moles.

Mg = 1.6772/0.8448 = 2

Ga = 0.8448/0.8448 = 1

Thus, the formula of the compound is [tex]Mg_2Ga[/tex]

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Pollutants moving into underground water does not represent a social benefit of sustainable waste management.

It is the act of recycling wastes or reducing the amount of single-use products that end up as wastes in the environment.

By practicing sustainable waste management, fewer wastes are generated and lesser lands are used as landfills.

More lands become available and wastes are put to beneficial uses.

Pollutants moving into underground water is detrimental to the health of humans. Thus, it cannot represents one of the social benefits of sustainable waste management.

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The option that does not show the social benefit of sustainable waste management is leacha-te going into ground-water (Option D).

The term sustainable waste management has to do with the process in which pollutants are taken care of in a way that does not affect the environment.

The option that does not show the social benefit of sustainable waste management is leacha-te going into ground-water (Option D).

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The combustion of 30.0 g of glucose at room temperature and pressure produces 24.0 L of carbon dioxide.

It is a reaction in which a substance burns with oxygen to form carbon dioxide and water.

Let's consider the combustion of glucose.

C₆H₁₂O₆ + 6 O₂ ⇒ 6 CO₂ + 6 H₂O

First, let's convert 30.0 g of glucose to moles using its molar mass.

30.0 g × 1 mol/180.16 g = 0.167 mol

The molar ratio of C₆H₁₂O₆ to CO₂ is 1:6. The moles of carbon dioxide produced are:

0.167 mol Glucose × (6 mol CO₂/1 mol Glucose) = 1.00 mol CO₂

1 mol of an ideal gas at room temperature and pressure occupies 24.0 L.

The combustion of 30.0 g of glucose at room temperature and pressure produces 24.0 L of carbon dioxide.

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Answer:

Percent Yield  =  21.4% C

Explanation:

The actual yield is the value that was produced after conducting an experiment. The theoretical yield is the value calculated using the balanced chemical equation.

To find the percent yield, you need to (1) convert moles A to moles C (via the mole-to-mole ratio from equation coefficients) and then (2) calculate the percent yield. It is important to arrange the ratios in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the values given.

3 A + B -----> 2 C + D
^                    ^

7.00 moles A          2 moles C
---------------------  x  ----------------------  =  4.67 moles C
                                 3 moles A

                                 Actual Yield
Percent Yield  =  ------------------------------  x  100%
                              Theoretical Yield

                              1.00 moles C
Percent Yield  =  -------------------------  x  100%
                              4.67 moles C

Percent Yield  =  21.4% C

Hydrogen bonds are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.

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strength in milligrams is 0.3mg

Mass of the solute in grams/Volume of the solution in litres equals the strength of the solution. The overall formula must be multiplied by 1000 if the volume is measured in millilitres (mL). The concentration of the solution, measured in grammes per litre, can be used to determine the solution's strength.

Molarity -  The moles of solute per litre of solution is measured as molarity. For instance, when table salt is dissolved in water, water serves as both the solution and the solute. Sodium chloride weights 58.44 grammes per mole. One molar solution, or 1M, is created by dissolving 58.44 grammes of sodium chloride in one litre of water.

Relation between Molarity and Strength?

The volume of solute in one litre of a solution determines its strength. As a result, a solution's strength is calculated by multiplying its molecular mass by its molarity.

1 grain = 64.8 milligrams.

1/200 grains = 64.8/200

                     = 0.3mg

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Hard-boiled eggs are made by placing eggs in boiling water until their whites and yolks solidify. Hard-boiling an egg take longer at high altitude than at sea level because the high altitude lowers the boiling point of the egg.

Hard-boiling an egg take longer at high altitude than at sea level because the high altitude lowers the boiling point of the egg. It takes longer for the water to reach 100°C.

Hard boiling egg is a chemical change because the egg cannot back into its original form.

Chemical change are those changes in which substance changes chemical composition. These changes are permanent changes.

Thus from the above conclusion we can say that Hard-boiled eggs are made by placing eggs in boiling water until their whites and yolks solidify. Hard-boiling an egg take longer at high altitude than at sea level because the high altitude lowers the boiling point of the egg.

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Answer:

Sarif should wear protective gloves, protective clothing.

Explanation:

Answer:

B) Gold

A) Number of electrons and protons.

Explanation:

Atomic Masses (from periodic table):

----> Copper (Cu): 63.546 g/mol

----> Gold (Au): 196.97 g/mol

----> Iron (Fe): 55.845 g/mol

----> Platinum (Pt): 195.08 g/mol

The atomic number represents the number of protons. Neutral atoms have the same number of protons as electrons. The mass number represents the number of protons and neutrons.