A wave is a disturbance that transfers _____ from one place to anothe

Answer:

a:It is used as a moisturizer

b:Paraffin

c:Dissolve substances

d:Chemical distillation

e:Paper chromatography

A demand O2 delivery system utilizes a "pressure drop" mechanism to trigger oxygen flow.

In a demand oxygen delivery system, the flow of oxygen is triggered by a pressure drop that occurs when the user initiates inhalation. When the user takes a breath, the drop in pressure in the system activates the mechanism that releases oxygen.

This mechanism can be a valve or regulator that opens to allow oxygen to flow from the source to the user.

The pressure drop required to trigger the oxygen flow depends on the specific design of the system and can vary. Generally, the pressure drop is set at a level that ensures the user's inhalation effort is sufficient to activate the oxygen flow while maintaining a safe and reliable operation.

The pressure drop is typically calibrated and adjusted during the manufacturing process to meet the desired specifications and requirements of the system.

In summary, a demand oxygen delivery system relies on a pressure drop mechanism to initiate the flow of oxygen. This mechanism ensures that oxygen is released when the user inhales, providing them with the required oxygen supply.

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Answer:

When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. ... In a covalent bond, electrons are shared between atoms. The bonds between the two hydrogen atoms and the oxygen atom in a molecule of water are covalent bonds

Explanation:

Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms. The atoms of certain elements readily bond with other atoms to form molecules.

Answer:

Molecules are formed when one or more atom of an element/elements are chemically joined together to create a new type of matter.

Explanation:

Hope it helped!

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer: Cyclohexylamine is a stronger base than aniline because in aniline electron pair is involved in conjugation, which makes the electron pair unavailable, where as in cyclohexyl amine, the −NH

2

​

 group is out side the ring and there is no resonance in the ring also, thereby the lone pair present on the nitrogen is freely available, resulting in a stronger base.

Explanation: I dont have one...

Answer:

yung una po

Explanation:

kasi meron yan sa grade 6

Answer:

The Answer Is B The Sun,The Moon,And Earth Are In A Straight Line

Explanation:

Hope This Helps!

The formula unit of a salt that is not correct is \(Ca_{2} O\) in option C.

A salt is almost always made up of a metal and a nonmetal element. The salts as we know them are mostly ionic in nature and they are known to be able to dissolve in solution when they are put into solution.

We know that the salt that they meant to show in option C is calcium oxide and the foregoing can not be the correct formula since both the calcium and the oxygen ions are divalent. The correct formula of the salt would be CaO.

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Answer:

4

Explanation:

it has 4 oxygen

hope this helps

Answer:

The law companies that value excessive ethics comply with the legal guidelines not solely in letter however go past what

Answer: 1.76 M

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\(\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in L)}}\)     .....(1)

Molarity of \(NaNO_3\) solution = 0.35 M

Volume of solution = 125 mL

Putting values in equation 1, we get:

a) \(0.35M=\frac{\text{Moles of}NaNO_3\times 1000}{125ml}\\\\\text{Moles of }NaNO_3=\frac{0.35mol/L\times 125}{1000}=0.044mol\)

1 mole of \(NaNO_3\) contains = 1 mol of \(NO_3^-\)

Thus \(0.044mol\) of \(NaNO_3\) contain= \(\frac{1}{1}\times 0.044=0.044\) mol of \(NO_3^-\)

b) \(1.1M=\frac{\text{Moles of}Mg(NO_3)_2\times 1000}{450ml}\\\\\text{Moles of }Mg(NO_3)_2=\frac{1.1mol/L\times 450}{1000}=0.495mol\)

1 mole of \(Mg(NO_3)_2\) contains = 2 mol of \(NO_3^-\)

Thus \(0.495mol\) of \(Mg(NO_3)_2\) contain= \(\frac{2}{1}\times 0.495=0.99\) mol of \(NO_3^-\)

Total \([NO_3^-]=\frac {\text {total moles}}{\text {total volume}}=\frac{0.044+0.99}{0.575L}=1.76M\)

Thus \([NO_3^-\) after mixing is 1.76 M

The description of each volcano is

Volcanoes erupt with a highly destructive mixture of ash, lava, hot, dangerous gases, and rock. Explosions from volcanoes have claimed lives.

Volcanic eruptions can bring about additional health risks like wildfires, floods, mudslides, power disruptions, and contaminated drinking water.

The tectonic plate borders are home to 60% of all active volcanoes. The majority of volcanoes are situated along the Pacific Ocean's "Ring of Fire," which is a band of volcanic activity.

Some volcanoes, such as those that make up the Hawaiian Islands, develop at locations known as "hot spots" inside of plates.

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Answer:

False for the first, true for second.

Explanation:

ATP is cellular energy and it needs to be recharged after it is used. That half dead is called adp.

The statement energy is released from ATP when it reacts with water to produce ADP is False, while the statement the information that cells need to direct their metabolic process is stored in RNA is True.

ATP is the energy source of cells generated by cellular respiration and anaerobic processes, while  RNA is a molecule obtain by the transcription process which is used to generate proteins during metabolic activities such as differentiation.

Therefore, with this data, we can see that ATP is the energy coin of cells, while cells generate RNA during transcription.

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Three of the following compounds are insoluble in water: SrSO4, AlPO4, and K2S.

Solubility in water depends on the nature of the compound and its ability to form hydrogen bonds with water molecules. Compounds that are composed of ions or polar molecules are typically more soluble in water than nonpolar molecules. LiC2H3O2 is a salt that dissociates into Li+ and C2H3O2- ions in water, and is therefore soluble. K2S is also a salt, but it forms S2- ions which are too large to effectively interact with water molecules, making it insoluble. SrSO4 and AlPO4 are both insoluble because they have low solubility product constants (Ksp) and do not dissociate into ions to a significant extent in water.

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2 (lithium acetate) is soluble in water.

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After one half life, the percentage of parent isotope compared to daughter product is 50/50

What is half-life in chemistry?

The half-life, or the duration it takes for one radioactive isotope to decay in half, is an intriguing and practical feature of radioactive decay. An individual radioactive isotope's half-life is unaffected by environmental factors and is independent of the isotope's starting concentration.

The original parent nuclei still contain 50% of them after one half-life, 25% after two, and so on. The half-life and the initial quantity of radioactive elements present both affect how much radiation is produced by a radioactive source.

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Answer:

negitive 5 or -5

Explanation

usally 12-7 = 5 but 7 is first so it you turn 5 to negitive 5

or -5

The maximum value within a 1 standard deviation range of the average would be 3.61 ml. This is found by adding the standard deviation to the average (2.8 ml + 0.81 ml = 3.61 ml).

To find the maximum value within a 1 standard deviation (SD) range of the average, you need to add the standard deviation to the average value. In this case, the average is 2.8 ml and the standard deviation is 0.81 ml. Here's the step-by-step explanation:
1. Determine the average value: 2.8 ml
2. Determine the standard deviation: 0.81 ml
3. Add the standard deviation to the average value: 2.8 ml + 0.81 ml
Your answer: The maximum value within a 1 SD range of the average is 3.61 ml.

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Avocados and tomatoes were mainly eaten by the Aztecs and Maya.

"Mayans cooking method includes digging a shallow pit, lining it with stones or clay balls.

Avocados and tomatoes were mainly eaten by the Aztecs and Maya, with different types of fruit. Corn was made into a kind of porridge, called atole in Mesoamerica and capita in Inca territory.

Avocados and tomatoes were mainly eaten by the Aztecs and Maya.

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The gas-phase decomposition of SO2Cl2 is a first-order reaction, and the rate of the reaction is given by the equation: rate = k[SO2Cl2]

The half-life of a first-order reaction is given by the equation: T1/2 = 0.693/k (a) At 600 K, the half-life for the process is 2.3 x 105 s. To find the rate constant at this temperature, we can use the half-life equation to solve for k: T1/2 = 0.693/k ;2.3 x 105 s = 0.693/k ;k = 0.693 / 2.3 x 105 s = 3 x 10^-5 s-1 , (b) At 320 degree celcius  , the rate constant is 2.2 x 10^-5 s^-1. To find the half-life at this temperature, we can use the half-life equation and substitute in the given rate constant: T1/2 = 0.693/k;T1/2 = 0.693 / 2.2 x 10^-5 s-1 ;T1/2 = 3.15 x 10^4 s Therefore, the half-life of the reaction at 320 degree celcius is 3.15 x 10^4 seconds.

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The food chain is the sequence of organisms in an ecosystem where each organism depends on the next as a source of food. For example, a simple food chain in a forest ecosystem could be grass being eaten by a rabbit, which is then eaten by a fox, which may be eaten by a mountain lion.

The trophic level that receives the most energy captured by plants is the primary consumer level (herbivores).

By eating higher up the trophic level, humans are contributing to the reduction of available energy in the ecosystem, as energy is lost at each level due to respiration, heat loss, and waste production. This means that fewer organisms can be supported in higher trophic levels, leading to a reduction in biodiversity.

Most of the energy that enters the trophic level is lost as heat or used by organisms in respiration, growth, and reproduction. Only a small fraction of energy is converted into biomass and passed on to the next trophic level.

Only about 10% of the energy from one trophic level gets passed to another. This is because energy is lost at each trophic level due to heat loss, respiration, and waste production. As a result, there is a limit to the number of trophic levels that can be supported in an ecosystem, as each level receives less and less energy.

Answer:

a food chain is a complex chain or a series of different organisms, depending on the particular food chain, that function in a hierarchy, depending on food source.

The trophic level that most energy captured by plants is the first level of the particular food chain. These are the producers.

By eating her up in the trophic level humans are contributing to loss in certain parts of the food chain, such as decreasing sources of food for organisms who are solely dependent on other organisms.

most of the energy that enters the trophic level is exerted and is mostly not used in terms of food and energy percentage.

10% of energy that is consumed from a food source from an another organism is stored per each trophic level to the next.

Explanation:

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Investing   :

"I'm considering investing in equities."

"I need a system for handling my finances."

"I need to put money away for the future."

No Investment :

"My knowledge of investment is limited."

"I am unable to purchase stocks."

"I don't particularly enjoy taking chances."

Explanation:

These are accurate because I recently completed the course that taught me these things.

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The time required for a reaction to reach equilibrium can depend on the value of Kc, which represents the equilibrium constant. The equilibrium constant, Kc, is determined by the concentrations of the reactants and products at equilibrium.

In general, reactions with a larger Kc value tend to reach equilibrium more quickly than those with a smaller Kc value. This is because a larger Kc indicates that the concentration of products is higher compared to the concentration of reactants at equilibrium. As a result, the reaction proceeds more rapidly to reach the point where the ratio of products to reactants matches the value of Kc.

Therefore, among the given options, the answer would be option (c) where Kc is a very large number. In this case, the reaction would require the least amount of time to reach equilibrium.

It's important to note that the actual time required for a reaction to reach equilibrium depends on various factors such as temperature, pressure, and the presence of catalysts. Additionally, the time required for a reaction to reach equilibrium cannot be determined solely based on the value of Kc. However, in general, a larger Kc value suggests a quicker attainment of equilibrium.

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Answer:

D

Explanation:

bothe cylinders are at room temperature so no cylinder has more themal energy. That crosses off the answers A B and C.

9.45 × 10^21atoms

Explanation:

Density = mass/volume

According to the question, Density = 270g/L, v = 1.57L

Hence,

270 = m/15.7

m = 4239g

mole = mass/molar mass

Molar mass of Aluminum = 27g/mol

mole = 4239/27

mole = 157mol

Using Avogadro's number, number of atoms of Aluminum =

157 × 6.02 × 10^23

= 945.14 × 10^23

= 9.45 × 10^21atoms

Answer:

0.450 grams of Fe contains 4.85*10²¹ atoms

Explanation:

Molar mass is the mass of one mole of a substance, which can be an element or a compound.

In this case, the molar mass of iron Fe is 55.85 g / mole. Then you can apply the following rule of three: if by definition of molar mass 1 mole of Fe contains 55.85 grams, then how many moles will contain 0.450 grams?

\(amount of moles of Fe=\frac{0.450 grams*1 mole}{55.85 grams}\)

amount of moles of Fe=8.06*10⁻³ moles

On the other hand, Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if by definition of Avogadro's Number 1 mole of Fe contains 6.023*10²³ atoms, 8.06*10⁻³ moles how many atoms does it contain?

\(amount of atoms=\frac{8.06*10^{-3}moles*6.023*10^{23}atoms }{1 mole}\)

amount of atoms=  4.85*10²¹ atoms

0.450 grams of Fe contains 4.85*10²¹ atoms

Explanation:

The equation of the reaction is given as;

12C + 16 H2 --> 4 C3H8

a. Simplify the equation;

The coefficients are 12, 16 and 4.

4 is a common factor, so divide all through by 4.

12/4 = 3, 16/4 = 4, 4/4 = 1

The equation is given as;

3 C + 4 H2 -->  C3H8

b. If 21 moles of  C3H8 are formed, how many moles of C was needed.

From the reaction;

3 mol C atoms reacts to form 1 mol of  C3H8

x mol would react to form 21 moles of  C3H8

3 = 1

x = 21

x = 21  * 3

x = 63 moles

Answer:you only need one to balance Fe(NO3)2 react with Pb

Explanation:

if the spacing between planes of atoms in NaCl crystal is 0.281 nm, the predicted angle at which 0.148-nm x-rays are diffracted in a first-order maximum is  20.1°(approx.).

The predicted angle at which 0.148-nm x-rays are diffracted in a first-order maximum can be calculated using Bragg's law, which states that nλ = 2dsinθ, where n is the order of diffraction, λ is the wavelength of the X-ray, d is the spacing between the planes of atoms, and θ is the angle of diffraction.

We can rearrange this equation to solve for θ:

θ = sin⁻¹(nλ/2d)

Plugging in the given values, we get:

θ = sin⁻¹(1(0.148 nm)/(2(0.281 nm)))

θ ≈ 20.1°

Therefore, the predicted angle at which 0.148-nm x-rays are diffracted in a first-order maximum is approximately 20.1°.

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Disaccharides and polysaccharides in beans, cotton, cellulose, lactose, amylose, amylopectin, and glycogenThere are different types of disaccharides and polysaccharides present in the following items

:Beans - The major disaccharides present in beans are sucrose and raffinose. On the other hand, the major polysaccharide present in beans is starch.Cotton - The main polysaccharide present in cotton is cellulose.Cellulose - It is a polysaccharide that is made up of glucose units and is the main structural component of plants. It is indigestible by humans.

Lactose - It is a disaccharide made up of glucose and galactose. Lactose is the main sugar present in milk.Amylose and amylopectin - They are polysaccharides present in starch. Amylose is a linear polymer of glucose, while amylopectin is a branched polymer of glucose.Glycogen - It is a highly branched polysaccharide that is similar to amylopectin. Glycogen is present in animals and serves as a storage form of glucose in the liver and muscles.

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