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Fill in the blank.

Atoms are held together in molecules by _______.
_______ are compounds with the same chemical formula but different molecular structures.
A/An _______ indicates the ratio of atoms in a molecule.
_______ are similar to molecular formulas but show how atoms are bonded together.
When two atoms of the same element combine to form a molecule, this is called a _______ molecule.
The breaking and forming of bonds between atoms in substances results in changes in the _______ contained in the substances.
Respond to the following based on your reading.

Give two purposes for the systematic naming of chemicals.
Name the elements in the molecule H2SO4 and tell how many atoms of each element are present.
How many molecules are represented by 3CO2?

of water can be electrolytically broken down to yield 5 moles or oxygen gas. 1.64x1023 = 1677.72 if 1.64 moles or sodium chloride were produced.

A mole (6.021023 typical particles) of the any gas takes up 22.4L at STP (figure below). A comparison of various gases' molar volumes is shown in the image below. At STP, there exist samples containing helium (He), nitrous (N2), or methane (CH4). Each has a mole content of 1 or 6.02 1023 particles.

1.64x1023 = 1677.72

if 1.64 moles or sodium chloride were produced

One mole of the a material is equivalent to 6,022 x 1023 molecules of that substance.  The Avogadro number, also referred to as the Avogadro constant, is 6.022 x 1023. The definition of a mole can be used to the conversion between mass and particle count.

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Answer:

Coke

Explanation:

A solid fuel formed by heating coal in the absence of air is coke. Coke is black colored, tough porous substance. It is pure carbon.

The percent error in the measurement of vitamin C amount by the student is 31.6%.

% error = (95 - 65)/95 × 100

% error = 30/95 × 100

% error = 31.6%.

Therefore, the percent error in the measurement of vitamin C amount by the student is 31.6%.

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Answer:

oxygen and ozone are different because they are made up of 3 oxeygen atoms

Explanation:

It is true that a molecule with the given formula  \(C_{6} H_{12}\)  could be a saturated hydrocarbon.

Hydrocarbons or \(C_{6} H_{12}\) is defined as a single bond between the carbon atoms which can be said as saturated hydrocarbons. They belong to the most basic group of hydrocarbons. Because each carbon atom is linked to as many hydrogen atoms as possible, they are referred to as saturated.

Water cannot dissolve in saturated hydrocarbons as they are less dense than water with increasing carbon chain or ring size, melting and boiling points rise. The characteristics of saturated hydrocarbons chemically is combustion and halogenation which are two significant reactions. Alkanes or saturated hydrocarbons have the general formula \(C_{n} H_{2n+2}\) where \(n\) is how many carbon atoms there are in an alkane molecule.

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The job analysis conducted at Quick Burger indicates that the job requires specific duties and responsibilities, including preparing milkshakes and sweeping the floor.

The type of job analysis performed in this case is a task-oriented analysis. The task-oriented analysis focuses on identifying and documenting the specific tasks and responsibilities associated with a job. In this analysis, the emphasis is placed on the actions and duties that need to be performed to carry out the job effectively. By identifying tasks such as preparing milkshakes and sweeping the floor, the job analysis provides a clear understanding of the specific activities required for the job role.

This information is valuable for various purposes, such as developing job descriptions, determining training needs, and evaluating job performance. Task-oriented job analysis helps ensure that individuals hired for the job are aware of the specific tasks they need to perform and helps organizations establish clear expectations for job performance.

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Answer:

the answer is D

Explanation:

Answer:

The mass of blood in each heartbeat is 79.5 g.

According to the problem statement, the human heart typically pumps about 75 mL of blood per beat at a resting pulse rate of 79 beats per minute. Blood has a density of 1060 kg/m³. Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. We need to find the volume of blood in the body and the mass per heartbeat of the blood.

To find out the volume of blood in the body, we will use the following formula:

Volume of blood in the body = Blood flow rate * time taken

Since the blood flow rate is the volume of blood pumped per minute by the heart, we can find it by multiplying the volume of blood pumped per heartbeat with the pulse rate.

Volume of blood pumped per minute by the heart = Blood flow rate = Pulse rate * Volume of blood pumped per heartbeat

Blood flow rate = 79 beats/minute * 75 mL/beat

                          = 5,925 mL/minute

                          = 5.925 L/minute

The volume of blood in the body is given by:

Volume of blood in the body = Blood flow rate * time taken

Volume of blood in the body = 5.925 L/minute * 1 minute

                                                = 5.925 L

Thus, the volume of blood in the body is 5.925 liters.

Mass per heartbeat can be found by using the following formula:

Mass per heartbeat = Density of blood * Volume of blood pumped per heartbeat

Mass per heartbeat = 1060 kg/m³ * 75 mL = 0.0795 kg = 79.5 g.

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Natural occurrences including lightning strikes, volcanic eruptions, and bacterial metabolic respiration all contribute to the atmospheric presence of nitrogen dioxide.

Nitrogen and oxygen are the two main chemical building blocks of NOx. Some of these compounds are subject to regulation by governmental organisations like the Environmental Protection Agency (EPA), although the rules don't fully take into account all of their varied natural origins:

Natural occurrences including lightning strikes, volcanic eruptions, and bacterial metabolic respiration all contribute to the atmospheric presence of nitrogen dioxide.

In the bodies of both humans and other animals, nitric oxide is created. This gas plays important roles in blood pressure regulation, inflammation control, and cell communication.

Bacteria and fungus in soil and oceans create nitrous oxide, often known as NO and commonly referred to as laughing gas. It also results from chemical reactions that occur in the environment. NO has a significant impact on air quality despite not being a VOC: The gas is released into the atmosphere by natural processes in the millions of tonnes. Temperature, the quantity of mineral nitrogen that is locally available, soil acidity, and soil water content are only a few variables that might affect emission rates.

The complete question is:

Natural Compounds made naturally, through chemical reactions that occur in __________ _____________ and during __________ ________________ such as volcanoes and lightning.

⇒ For example: water and carbon dioxide

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Answer:

Distance also affects the apparent brightness of an object. A distant, but very energetic star can appear dimmer to us than a lower-energy, but closer one. ... Each of their effective temperatures results in a different brightness for the object. The quasar, however, is very far away, and so appears dim.

Explanation:

A car has an internal volume of 2600 liters. If the sun heats my car from a temperature of 200 C to a temperature of 550 C, 850mm Hg is the pressure inside car.

The force delivered perpendicularly to an object's surface per unit area over which a certain force is dispersed is known as pressure. In comparison to the surrounding pressure, gauge pressure corresponds to pressure.

Pressure is expressed using a variety of units. Some of these come from dividing a unit proportional force by either a unit of area, such as the pascal in the SI (Pa).

P₁/T₁=P₂/T₂      

760 /283=P₂/328

P₂=850mm Hg

Therefore, 850mm Hg is the pressure inside car.

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Answer:

particles in liquids have greater kinetic energy than particles in solids

Answer: I belive it is 25%. Correct me if you know the answer or think I am wrong.

Explanation:

Answer:

Explanation:

A perfect diamond is a single molecule made of carbon atoms.

DNA is a super long molecule that has information uniquely describing every human being.

When two or more atoms chemically bond together, they form a molecule.

They are very small in size.

They have space between them.

They are in constant random motion.

molecules move when Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.

In 1926, French physicist Jean Perrin received the Nobel Prize in physics for proving, conclusively, the existence of molecules.

Molecules can exist in free state because they are very stable.

The smallest particle of a compound capable of existing on its own is a Molecule-not a atom.

Answer:

in the fermentati0n process glucose [C6H12O6]c of food is converted into ethanol [ethyl alchol, C2H5OH] and Co2 by yeast cell .In this process yeast cell produce in vertase and zymase enzyme which convert glucose into alcohol .

i.e. c6H12O6========> C2H5OH+Co2+energy

Answer: A/B

Explanation:

It is most likely formed from igneous rock that was once buried

Answer: a

Explanation:

Answer:

7.20 kg/L

Explanation:

Density is mass (kg) / volume (L).

18.00kg/2.50L = 7.20 kg/L

If you need it in g/mL this is the equation:

\(\frac{7.20kg}{L} *\frac{1000g}{1kg} *\frac{1L}{1000mL} = 7.20g/mL\)

The air pressure at the top of Mount Everest in atmospheres is equal to 0.2618 atm.

In Science, pressure can be defined as a measure of the force exerted per unit area of an object or physical body. This ultimately implies that, pressure is usually measured in Newton per meter square and calculated by using this formula:

P = F/A

Where:

Generally speaking, air pressure can be measured in other units such as the following:

In order to convert the value of pressure in millimeters of mercury (mm Hg) to atmosphere, we would divide by 760 as follows:

Air pressure = 199/760

Air pressure = 0.2618 atm.

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Answer: 0.261842

Explanation:

Answer:

A.   it is the lowest at low temperatures

Explanation:

It is true with respect to the kinetic energy of a molecule that the it is the lowest at low temperatures.

The kinetic energy of a molecule is the energy due to the motion of the particles within a substance.

Answer:

A.  it is the lowest at low temperatures

B.  it increases at low temperatures

C.  it is the same at all temperatures

D.  it is the lowest at high temperatures

Answer:

I believe it's D.

Explanation:

If the ice in the calorimeter was actually at a temperature below 0.0°C, it would significantly affect the final result of the experiment. The reason for this is that the heat transfer between the ice and its surroundings, including the calorimeter, is based on the temperature difference. In this case, the ice would be at a lower temperature than anticipated, leading to an underestimation of the amount of heat transferred.

During the process of melting, heat is absorbed by the ice to convert it from a solid state to a liquid state. This process requires a specific amount of energy known as the heat of fusion. Normally, the ice is assumed to be at 0.0°C during this phase, as it is the temperature at which ice and water coexist in thermal equilibrium.

If the ice was actually at a temperature below 0.0°C, it means that it was already partially melted or in a supercooled state. As a result, the initial temperature recorded would be lower than expected. When heat is added to the system, it would first raise the temperature of the ice to 0.0°C, and then proceed to melt the ice. However, since the recorded temperature was already below 0.0°C, the apparent increase in temperature may be minimal or negligible.

Furthermore, the heat absorbed by the ice during the phase change from solid to liquid would also be affected. The heat of fusion is a well-defined value for ice at 0.0°C, but if the ice is below that temperature, it might deviate from the expected value. This could introduce additional errors in the calculations.

Consequently, if the ice in the calorimeter was actually at a temperature below 0.0°C, the measured heat transfer and the calculated values for the heat of fusion and specific heat capacity would be inaccurate. It is crucial to ensure accurate measurements and assumptions in such experiments to obtain reliable results.

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The point during the fall will the potential and kinetic energy be equal is B. 1/2 of the way down.

It should be noted that the point when the potential and kinetic energy be equal will be at the midpoint of the initial height.

Therefore, the object possesses potential energy when at rest and then kinetic energy when in motion.

When KE = PE

We can deduce that KE+PE = MGH and  PE+ PE = MGH

This implies that MGH + MGH= 2MGH and  2H = H

Therefore, the point during the fall will the potential and kinetic energy be equal is B. 1/2 of the way down.

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Answer:

c

Explanation:

A hydrocarbon consists of only carbon and hydrogen atoms. Combustion occurs when a hydrocarbon reacts with oxygen to form carbon dioxide and water molecules.

If PCR reaction is performed but accidentally only added one of the two primers there will only be one DNA strand produced.

What is PCR?

PCR stands for polymerase chain reaction. It is a test to find genetic material from a particular organism, like a virus. If you have a virus at the time of the test, the test will reveal its presence.

What occurs in PCR when only one primer is used?

The procedure is known as "asymmetric PCR" if only one primer is employed. As only one new copy is created per cycle and only one strand of the double-stranded DNA will be amplified, exponential amplification cannot be achieved.

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The exchange of oxygen and carbon dioxide and the exchange of nutrients and waste materials happen due to a process called diffusion .

Chemical equations are constructed in such a way that they show all of the molecules involved. Because each oxygen molecule has two oxygen atoms, it is written with a \[2\] . Note: We breathe diatomic oxygen molecules, which are made up of only two oxygen atoms.

Supplemental oxygen therapy helps people with COPD, COVID-19, emphysema, sleep apnea and other breathing problems get enough oxygen to function and stay well. Low blood oxygen levels (hypoxemia) can damage organs and be life-threatening. You may need oxygen therapy for life or temporarily.

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1. Eclipses occur when one celestial object, such as the Moon or Earth, passes through the shadow of another celestial object.

2. The Earth's shadow falls on the Moon, causing a lunar eclipse.

3. . An eclipse happens when the shadow of one celestial object falls on another. A solar eclipse happen Moon covers the when the Sun either completely or partially. A lunar eclipse happens when Earth shadow hides the Moon from view.

4. During an eclipse, the surrounding area may appear dark because either the Sun or the Moon is partially or completely blocked by the shadow of another celestial object.

1. Eclipses occur when one celestial object, such as the Moon or Earth, passes through the shadow of another celestial object. In the case of a solar eclipse (Figure 1), the Moon passes between the Earth and the Sun, causing the Moon to cast a shadow on the Earth's surface.

This occurs when the Moon is in its new moon phase and its orbit aligns with the Earth and Sun. In a lunar eclipse (Figure 2), the Earth comes between the Sun and the Moon, causing the Earth to cast a shadow on the Moon. This occurs when the Moon is in its full moon phase and its orbit aligns with the Earth and Sun.

2. In Figure 1, the Moon is positioned between the Sun and the Earth. The Moon's shadow falls on a portion of the Earth, causing a solar eclipse. In Figure 2, the Earth is positioned between the Sun and the Moon. The Earth's shadow falls on the Moon, causing a lunar eclipse.

3. An eclipse happens when the shadow of one celestial object falls on another. A solar eclipse happens when the Moon covers the Sun either completely or partially. A lunar eclipse happens when the Earth's shadow hides the Moon from view.

4. During an eclipse, the surrounding area may appear dark because either the Sun or the Moon is partially or completely blocked by the shadow of another celestial object. In the case of a solar eclipse, when the Moon passes between the Earth and the Sun, the Moon blocks the light from the Sun, creating a dark area on the Earth's surface.

This is known as the umbra, where the Sun is completely obscured. Additionally, there is a region called the penumbra, where the Sun is only partially obscured, creating a less intense shadow.

In the case of a lunar eclipse, when the Earth comes between the Sun and the Moon, the Earth's shadow falls on the Moon, making it appear dark. This occurs because the Earth blocks the direct sunlight that usually illuminates the Moon.

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Answer:

44 neutrons

Explanation:

To find the neutrons of an atom subtract the atomic number from the mass of the atom

in this case

80-36=44

tge number of neutrons that are in that atom is 48