Objects with more (less or more) molecules have
heat energy than objects with (greater or fewer)
molecules? fill in the blanks

Answer:

Maybe it's (a) amount of cytoplasm ...

hope its right

Answer:

A lightning

Explanation:

The container that appeared to have the least volume of liquid despite all three holding the same volume is the container with a narrow neck or a tall, slender shape.

When all three containers hold the same volume of liquid, the perception of volume can be influenced by the shape and design of the containers. A container with a narrow neck or a tall, slender shape gives the illusion of having less liquid compared to a wider or shorter container with the same volume. This is because our visual perception tends to focus on the height and width of the liquid column rather than the actual volume.

The narrower neck or taller shape creates a smaller surface area for the liquid to spread out horizontally, making the liquid column appear taller and more concentrated. In contrast, a wider or shorter container spreads the same volume of liquid over a larger surface area, creating a shallower and more spread-out appearance. This visual effect can lead to the perception that the container with a narrow neck or taller shape has the least volume of liquid, despite all containers actually holding the same amount.

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Answer: weathering due to freezing and thawing

Explanation:

The reason that caused these cracks to form is weathering due to freezing and thawing.

Weathering simply means the breaking down of rocks. In this situation, the boulder is freezed and thawed and due to this, as time progresses, it'll gradually be broken down. This is the reason why Mike saw the cracks even though there were no cracks the last time he went hiking.

Answer: Originally viewed as a single event, the Taconic orogeny is now known to consist of at least three episodes. The first took place in the Early Ordovician Epoch near Maine and Newfoundland. The second was centred on eastern Tennessee in the Middle Ordovician Epoch.

The IR spectrum of methyl salicylate exhibits key peaks that correspond to the O-H stretch (3100-3000 cm⁻¹), C-H stretch (2950 cm⁻¹), C=O stretch (1730 cm⁻¹), C=C stretch (1600 and 1500 cm⁻¹), and C-O stretch (1300 cm⁻¹) in its functional groups.

Methyl salicylate is an organic compound with the chemical formula \(C_{8}H_{8}O_{3}\). Its systematic name is methyl 2-hydroxybenzoate. Methyl salicylate contains two main functional groups: a hydroxyl group (-OH) and an ester group (-O-CO-CH₃). The hydroxyl group is attached to one of the carbon atoms in the benzene ring and is responsible for the compound's phenolic properties, while the ester group is attached to the carboxyl group of salicylic acid, replacing the carboxylic acid group with a methyl group (-CH₃). Thus its IR spectrum comprises of:

1. Around 3100-3000 cm⁻¹: This peak is indicative of the O-H stretch from the hydroxyl group (-OH) present in methyl salicylate.

2. Approximately 2950 cm⁻¹: This peak is due to the C-H stretching vibrations from the sp³ hybridized carbons present in the methyl group (-CH₃).

3. Near 1730 cm⁻¹: This peak represents the C=O stretching vibrations from the ester carbonyl group (R-COOR') in methyl salicylate.

4. Approximately 1600 cm⁻¹ and 1500 cm⁻¹: These peaks can be attributed to the C=C stretching vibrations present in the aromatic ring.

5. Around 1300 cm⁻¹: This peak is associated with the C-O stretching vibrations from the ester group.

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The pulse duration of periodic pulse train with a duty cycle of 15% and a period of 115 nanoseconds is 17.25 nanoseconds.

Duty cycle  = 15% or 0.15

Time period = 115 nanoseconds

The ratio of the amount of time the signal spends in the "on" state to its overall duration is known as the duty cycle. The signal is on for 15% of the entire period when the duty cycle is given as 15% in this instance. Duty cycles are a term used to represent the percentage of time that an electrical signal is active in a device, such as the power switch in a switching power supply, or when an organism, like a neuron, fires an action potential.

Calculating the duty cycle and the period of the pulse train -

Pulse duration = Duty cycle x Period

= 0.15 x 115

= 17.25

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Answer:

In cellular respiration, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials. ... Matter is conserved during cellular respiration because atoms are conserved in physical and chemical processes

Explanation:

I hope this helps

The first thing we need to do is calculate the mass of one mole of carbon dioxide, and we get:

(Mass of Carbon) + (Mass of 2 Oxygen atoms) = Molar mass

Therefore, carbon dioxide has a molar mass of 44 grams, which is the mass of the gas

In order to determine the mass of 4 molecules of carbon dioxide, we need to multiply it by 4 × 44 = 176g.

Hope this helps :)

\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)

Here we go ~

lets calculate Molar mass of \({\sf CO_2} \) :

\(\qquad \sf  \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 12 + 2(16)\)

[ Molar mass of\({\sf \: CO_2 } \)= Molar mass of Carbon + 2×( Molar mass of Oxygen )]

\(\qquad \sf  \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 12 + 32\)

\(\qquad \sf  \dashrightarrow \: Molar \: \: mass \: \: of \: \: C O _2 = 44 \: g\)

[ i.e 1 mole of \({\sf CO_2} \) weights 44 grams ]

So, by unitary method :

\(\qquad \sf  \dashrightarrow \: 1 \: \: mole \: \: CO_2 = 44 \: \: g\)

\(\qquad \sf  \dashrightarrow \: 4 \: \: moles \: \: CO_2 = (44\times 4) \: \: g\)

\(\qquad \sf  \dashrightarrow \: 4 \: \: moles \: \: CO_2 = 176 \: \: g\)

Therefore, 4 moles of CO2 weights 176 grams

             Where is the picture?                                                                         

Answer:

6.72*10¹²= 6,720,000,000,000 in standard form.

Explanation:

Scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a * 10ⁿ

 where:

In this case 12 is a positive number, so the decimal point is shifted to the right 12 places.

So, 6.72*10¹²= 6,720,000,000,000 in standard form.

Answer:

58.5g/mol

Explanation:

Given substance:

 Sodium chloride  = NaCl

Unknown:

Molecular mass = ?

Solution:

The molecular mass of a compound is the gram-formula mass or gram-molecular weight of the compound.

It is determined by adding its component atomic masses and then express in grams per mole;

Atomic mass of Na = 23g

Atomic mass of Cl = 35.5g

 NaCl  = 23 + 35.5  = 58.5g/mol

Answer:

since you have not provided which units you want the conversion for I'll answer some of the common ones for atmospheric pressure :

to convert into pascal(pa)

you have the formula :

1 atm = 101325 pa

thus

0.200 atm = 20265 pa .

In order for electrolysis to take place, a salt such as Na2SO4 is required. It makes available the ions Na+ and SO42, both of which are drawn to the electrodes in the solution and move toward them as a result. They do not experience a discharge when brought close to the electrodes. However, they are able to cancel out the electric charges carried by the ions that are formed as a result of the destruction of water by these electrodes. Let's check out what's happening at each of the electrodes.

At the cathode, often known as the negative pole, water breaks down in the following manner:

2H2O+2e−⟶H2+2OH−.This is only conceivable if some positive ions are available near the cathode to compensate for the negative charges emerging in the solution with these freshly produced OH ions. The only way this can happen is if there are some positive ions available near the cathode. In the absence of positive ions, such as Na+, in the vicinity of the cathode, the newly formed OH ions would function as a barrier to subsequent electrons coming from the external circuit, preventing those electrons from reaching the electrode and preventing the electrode from interacting with water. The electrolysis would come to a halt as a result.

At the anode, often known as the positive pole, the following reactions take place in water:

4H2O⟶O2+4H++4e− .This is only conceivable if there are negative ions coming near the anode to compensate for the positive charges that are forming in the solution as a result of these freshly produced H+ ions. A positively charged solution would result if the solution near the anode did not include any negative ions, such as SO42. Instead, the solution would contain the new H+ ions. This would stop any further electrons from being released from the water as a result. The electrolysis would come to a halt as a result.

The process culminates in a transformation of the solution's chemical makeup near the electrodes. When you go closer to the cathode, you'll notice that the solution has a higher concentration of NaOH. In the vicinity of the anode, the solution includes an increasing amount of H2SO4. Naturally, if you agitate and combine solutions that are anodic and cathodic, the acid and the base will neutralize each other, which will result in the solution being regenerated to contain the initial salt.

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Answer:

We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^

Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

Nitrogen is a key element in the nucleic acids DNA and RNA, which are the most important of all biological molecules and crucial for all living things. DNA carries the genetic information, which means the instructions for how to make up a life form.

It is used to make amino acids in our body which in turn make proteins. The human body comprises 3% nitrogen (by mass). It is an essential part of amino acids (makeup proteins), nucleic acids (DNA, RNA), ATP (energy molecule), etc. It is nearly impossible to live without nitrogen.

Therefore, Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

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Answer: 115

Explanation: Given ,

    Half life of Strontium-90 = 28.8 years.

     Number of count sample(s) = 5

    Decay Sample counts  (d)= 0.3125

    Time taken for a 5-count sample to decay 0.3125 =?

    1 - First calculate (d/s) i.e (0.3125/5) = 0.0625.

   2- since its half life (1/2)^n  i.e (1/2)^n = 0.0625

     n log 0.5 = log0.0625

    n = (log0.0625/0.5) = 4.

    (1/2)^4 =(1/16)=0.0625 =>28.8 times 4 i.e 115.2 years.

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TLC analysis of 2-bromooctane and 2-decene, the best solvent of choice depends on the polarity of the compounds. Water is a polar solvent, while ether is nonpolar.

If the compounds are polar, water would be the better solvent of choice. However, if the compounds are nonpolar, ether would be the better solvent of choice. Therefore, the choice of solvent for TLC analysis of 2-bromooctane and 2-decene would depend on the polarity of the compounds.

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Answer:

conduction

Explanation:

because she touched it with her foot

Answer:

23.48

Explanation:

Good Luck!

Answer: 23.48 g

Explanation:

formula: mass = density x volume

Volume of copper = 2.62 cm^3

Density of copper = 8.96 g/cm^3

mass = 8.96 x 2.62 = 23.4752

The correct answer is (e) H+ + OH- → H2O, which is the net ionic equation for any acid-base neutralization reaction.

In the titration of nitrous acid with potassium hydroxide, the balanced equation is:

HNO2 + KOH → KNO2 + H2O

To determine the net ionic equation, we need to eliminate the spectator ions that do not participate in the reaction. In this case, the spectator ions are K+ and NO2-. The net ionic equation is:

HNO2 + OH- → H2O + NO2-

In this equation, OH- reacts with HNO2 to form H2O and NO2-. This reaction is an acid-base neutralization reaction, where OH- acts as a base by accepting a proton (H+) from HNO2, which acts as an acid. The net ionic equation shows only the species that undergo a change during the reaction, and eliminates the spectator ions.

Therefore, the correct answer is (e) H+ + OH- → H2O, which is the net ionic equation for any acid-base neutralization reaction.

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Answer:

A

Explanation:

APEX

The sulfur dichloride has bent shape.

i.e, option A is correct one.

The three dimension (3D) representation of molecule by excluding lone pair of electron is called shape of the molecule.

The geometry and shape of the molecule is determined by using some theories like valence bond theory, hybridization and VSPER theory.

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Answer:

B

Explanation:

When a balloon is rubbed against wall : A.) Electrons were transferred from wall to the balloon.

When a balloon is rubbed against a wall, electrons are transferred from the wall to surface of the balloon. This is because the rubbing action causes balloon to become negatively charged, while the wall becomes positively charged.

Electrons and protons are subatomic particles that make up atoms, which are the basic units of matter.

Electrons are negatively charged particles that orbit around the nucleus of atom and have a very small mass compared to protons and neutrons.

Protons are positively charged particles that are located in the nucleus of an atom.

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Examples of homologous structures include the human arm, a bird or bat's wing, a dog's leg, a dolphin or whale's flipper, and a bird or a bat's wing. Despite being comparable and having similar qualities, they are separate and have different functions.

The arms of primates and bats are two common examples of homologous structures in evolutionary biology. Genetically, these two structures are related even though they do not share the same function or appearance as their most recent common ancestor.

The forelimbs of vertebrates, which are similar to the arms of primates, the front flippers of fish, and the wings of bats and birds, are an example of homologous structures.

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Answer:

14.9 moles of water

Explanation:

Given data:

Number of molecules of water = 9.0×10²⁴ molecules

Number of moles of water = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules of water

9.0×10²⁴ molecules ×1 mol /  6.022 × 10²³ molecules

1.49×10¹ moles

14.9 moles

Without doing any calculations it is possible to determine that magnesium hydroxide is more soluble than magnesium carbonate, and magnesium hydroxide is less soluble than magnesium oxide.

Therefore, the correct answer is BC.

In the case of magnesium hydroxide and magnesium oxide, both compounds are formed from magnesium cation (Mg2+) and hydroxide anion (OH-). However, magnesium oxide has a higher lattice energy than magnesium hydroxide due to the stronger electrostatic attraction between Mg2+ and O2- ions compared to that between Mg2+ and OH- ions. This stronger lattice energy means that it is more difficult to break apart the solid lattice structure of magnesium oxide in water, making it less soluble than magnesium hydroxide.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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The chemical breakdown of hydrogen-containing compounds requires an input of energy in the form of heat or light. This energy is required to break the bonds between the atoms in the compound, allowing them to react with other compounds or elements.

Hydrogen-containing compounds, such as hydrocarbons and carbohydrates, are typically composed of carbon and hydrogen atoms bonded together in covalent bonds. These bonds are strong and require energy to break apart. When energy is added to the system, it can be absorbed by the electrons in the bonds, which become excited and move to higher energy levels. This increased energy makes the bonds more unstable, allowing them to break apart more easily and react with other compounds.

The input of energy required for the chemical breakdown of hydrogen-containing compounds is known as the activation energy. This energy is needed to overcome the energy barrier that exists between the reactants and products in a chemical reaction. Once this energy barrier is overcome, the reaction can proceed spontaneously, releasing energy in the form of heat or light. The amount of energy required for a given reaction depends on the specific compounds involved and the conditions under which the reaction occurs.

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