identify which statement is true

Answer:

A and C would be best for the Heather's

Answer:

Conduction

Explanation:

The handle is touching the pot.

And I got it wrong

Density = mass/Volume    or    D = m/V  

Given:  V = 22.3 gal

           D = 0.8206 g/mL

1)  Rearrange the equation to solve for m

2)  Find conversion factor(s) and convert V from gal to mL (by dimensional analysis) so the units cancel

3)  Solve for m in g

4)  Find conversion factor(s) and convert m from g → lbs

1)  D = m/V  rearranges to  m = D ∗ V

2)  1 gal = 3.785 L  and  1 L = 1000 mL;     22.3 gal  ∗  3.785  L/1 gal  ∗  1000 mL/1 L   =  84 406 mL

3)  m =  0.8206 g/mL  ∗  84 406 mL    =  69 260 g

4)  1 lb = 453.6 g;   69 260  g  ∗  1 lb/453.6 g   =  153 lbs

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The density of ammonia gas in the 6.0 L container at a pressure of 820 mm Hg is approximately 0.805 g/L.

To determine the density of ammonia gas (NH3) in a 6.0 L container at a pressure of 820 mm Hg, we need to use the ideal gas law equation, which relates pressure, volume, number of moles, and temperature for a given gas.

The ideal gas law equation is:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we are given the pressure (820 mm Hg), volume (6.0 L), and assuming standard temperature and pressure (STP), we can use the values for R (0.0821 L·atm/(mol·K)) and convert the pressure to atm by dividing by 760 (1 atm = 760 mm Hg).

820 mm Hg / 760 mm Hg/atm = 1.08 atm

Now we can rearrange the ideal gas law equation to solve for density (d):

d = (P * M) / (RT)

Where M is the molar mass of ammonia (NH3), which is approximately 17.03 g/mol.

Substituting the values, we have:

d = (1.08 atm * 17.03 g/mol) / (0.0821 L·atm/(mol·K) * 298 K)

Simplifying the equation, we find:

d ≈ 0.805 g/L

Therefore, the density of ammonia gas in the 6.0 L container at a pressure of 820 mm Hg is approximately 0.805 g/L.

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The name of the compound from the structure that we can see in the question is;

4,4-dibromohex-2one

The International Union of Pure and Applied Chemistry (IUPAC) established a systematic set of guidelines for naming organic compounds.

Find the compound's longest continuous chain of carbon atoms. The compound's name is derived from this chain, which also acts as the compound's parent chain.

Assign a number to each carbon atom in the parent chain to give each carbon atom in the compound a special identification. The end that is closest to the functional group or substitutes is where the numbering begins.

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Answer: A volume of 59 mL of 0.220 M HBr solution is required to produce 0.0130 moles of HBr.

Explanation:

Given: Moles = 0.0130 mol

Molarity = 0.220 M

Molarity is the number of moles of solute present in liter of a solution.

\(Molarity = \frac{moles}{volume (in L)}\)

Substitute the values into above formula as follows.

\(Molarity = \frac{moles}{volume (in L)}\\0.220 M = \frac{0.0130 mol}{Volume (in L)}\\Volume (in L) = 0.059 L\)

As 1 L = 1000 mL

So, 0.059 L = 59 mL

Thus, we can conclude that a volume of 59 mL of 0.220 M HBr solution is required to produce 0.0130 moles of HBr.

while zinc is an important mineral with numerous functions in the body, it is not true that grains are the most reliable food source of zinc. A balanced diet that includes a variety of foods can provide adequate zinc intake for most people.

How to solve the problem?

The statement that is NOT true of zinc is "Grains are the most reliable food sources of zinc." While grains can be a source of zinc, they are not necessarily the most reliable source.

Zinc is an essential mineral that plays important roles in many biological processes, including immune function, protein synthesis, wound healing, and DNA synthesis. It is involved in various enzymatic reactions, and acts as a cofactor for many enzymes. Zinc is also important for proper growth and development, especially during childhood and adolescence.

Excess zinc intake can lead to decreased copper absorption, as both minerals compete for absorption in the intestines. This can lead to copper deficiency, which can cause anemia neutropenia, and other health problems. Therefore, it is important to maintain a balance between zinc and copper intake.

While grains can be a source of zinc, other foods such as meat, seafood, and dairy products are also good sources. Vegetarians and vegans may need to pay particular attention to their zinc intake, as plant-based sources of zinc may be less bioavailable than -based sources. Zinc supplements can also be used to prevent or treat deficiencies, but should be used with caution as excessive intake can have negative health effects.

In summary, while zinc is an important mineral with numerous functions in the body, it is not true that grains are the most reliable food source of zinc. A balanced diet that includes a variety of foods can provide adequate zinc intake for most people.

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Answer:

A Intrusive

Explanation:

I go to K12 and they say that's the answer

The right answer is D.116.67 L

The volume of a container with 0.7 moles of Argon and a pressure of 1.8 atm and 306.1K can be determined by using the ideal gas law.

The ideal gas law states that PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant and T is the temperature in Kelvin.

In this case, the ideal gas law can be used to calculate the volume of the container by rearranging the equation to V = nRT/P. Plugging in the given values, we get V = (0.7 moles)(0.08206 L•atm/mol•K)(306.1K)/(1.8 atm) = 116.67 L.

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The name of the salt tells us that:

a) there is just one other element combined with the metal by looking at the suffix of the salt's name.

b) the presence of oxygen in a salt can be indicated by the name of the salt.

a) The name of a salt can tell us that there is just one other element combined with the metal by looking at the suffix of the salt's name. If the salt name ends in "-ide," it indicates that the salt is composed of a metal and a single non-metal element.
For example, sodium chloride (NaCl) and potassium bromide (KBr) are salts where the metal (sodium and potassium) is combined with a single non-metal element (chlorine and bromine, respectively). The "-ide" suffix suggests the presence of only one other element in the salt.

b) The presence of oxygen in a salt can be indicated by the name of the salt. If the salt name includes the element oxygen, it suggests that oxygen is present in the salt compound.
For example, sodium carbonate (Na₂CO₃) and calcium sulfate (CaSO₄) contain the element oxygen in their chemical formulas. The presence of oxygen in the salt is implied by the name and the combination of elements in the compound.

Therefore, the name of salt tells us that there is just one other element combined with the metal and there is oxygen present in the salt

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The pressure exerted by a column of mercury that is about 760 mm high corresponds to approximately 0.987 atm.

To calculate the pressure exerted by a column of mercury, we can use the formula:

Pressure = density * gravity * height

Given:

Density of mercury = 13.6 g/cm³

Height of the mercury column = 760 mm = 76 cm

Acceleration due to gravity = 9.8 m/s²

First, we need to convert the height of the mercury column from centimeters to meters:

Height = 76 cm * (1 m / 100 cm) = 0.76 m

Now, we can calculate the pressure:

Pressure = 13.6 g/cm³ * 9.8 m/s² * 0.76 m

To ensure consistent units, we need to convert the density from grams per cubic centimeter (g/cm³) to kilograms per cubic meter (kg/m³):

Density = 13.6 g/cm³ * (1 kg / 1000 g) * (1 cm³ / (1e-6 m³))

Density = 13600 kg/m³

Plugging in the values into the pressure formula:

Pressure = 13600 kg/m³ * 9.8 m/s² * 0.76 m

Pressure = 99992.8 Pa

We can express the pressure in terms of atmospheric pressure:

1 atm = 101325 Pa (approximately)

To compare the pressure with atmospheric pressure, we can convert 99992.8 Pa to atm:

Pressure in atm = 99992.8 Pa / 101325 Pa/atm

Pressure in atm ≈ 0.987 atm

The pressure exerted by a column of mercury that is about 760 mm high corresponds to approximately 0.987 atm. Since atmospheric pressure near sea level is approximately 1 atm, this calculation supports the claim that atmospheric pressure near sea level is equivalent to the pressure exerted by a column of mercury about 760 mm high.

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Answer:

How to Formulate an Effective Research Hypothesis

State the problem that you are trying to solve. Make sure that the hypothesis clearly defines the topic and the focus of the experiment.

Try to write the hypothesis as an if-then statement. ...

Define the variables.

Explanation:

A complex molecule known as an organic is composed primarily of carbon atoms joined to other elements and/or other carbon atoms.

Although the distinction between "organic" and "inorganic" is disputed, many authors in the field of chemistry believe that any chemical compound that contains carbon-hydrogen or carbon-carbon bonds is considered to be an organic compound. Methane is an example of an organic compound, but opinions on whether carbon halides without hydrogen (such as carbon tetrachloride,  are organic or inorganic vary from author to author.

Millions of organic substances have been identified as a result of carbon's capacity to catenate (form strands with other carbon atoms).

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Answer:

4 is the oxidation in the reaction

Answer:

I think it's d but I'm not 100% sure

Explanation:

Answer:

a.

Explanation:

One double bond.

For example ethene CH2=CH2

The waves that  has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.

A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.

Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.

Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.

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Answer:

Copper will start to react with the oxygen in the air to form copper oxide. The copper oxide will continue reacting to oxygen over time. As the copper oxide continues to react with carbon dioxide and water in the air it coats the surface with that iconic blue-green patina colour

The conjugate acid-base pairs are ( HF, F⁻) and ( H₂O, H₃O⁺ )

A conjugate acid-base pair, as defined by Bronsted-Lowry, consists of two compounds that are distinct only in that they contain a proton (H⁺). The addition of a proton to a base results in the formation of a conjugate acid, while the removal of a proton from an acid result in the formation of a conjugate base.

The reaction becomes:

HF + H₂O → H₃O⁺ + F⁻

The conjugate acid-base pairs are ( HF, F⁻) and ( H₂O, H₃O⁺ )

Here,

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Answer:

; vinegar, salt and sugar completely dissolve in water. However, when sawdust is mixed with water it floats on top indicating it is insoluble in water.

Answer:I'll make it simple

Explanation:

The answer is A

Answer:

Life in the Han Dynasty (206 BCE - 220 CE) differed significantly from today in family, government, social structure, religion, and trade. For example, the Han Dynasty emphasized a patriarchal family structure, where the eldest male held authority, and filial piety was highly valued. In contrast, contemporary societies embrace more egalitarian family dynamics with shared decision-making.

The government system of the Han Dynasty relied on a centralized bureaucracy and emphasized meritocracy, while modern societies often adopted democratic systems. Socially, the Han Dynasty followed a hierarchical model influenced by Confucian principles, whereas contemporary societies strive for greater equality and social mobility.

Religion in the Han Dynasty combined Confucianism, Taoism, and Buddhism, whereas modern societies exhibit diverse religious beliefs. Lastly, trade in the Han Dynasty thrived along the Silk Road, while modern trade was globally interconnected and facilitated by technological advancements. These differences highlight the evolution of society over time.

Explanation:

The term that refers to the passing of a wave through an object is "transmission."

Transmission refers to the process by which a wave passes through an object or medium. In the context of sound, transmission occurs when sound waves travel through different substances, such as air, water, or solids.

When a sound wave encounters an object, it can be transmitted through it, reflected off it, or absorbed by it, depending on the properties of the object and the medium through which the sound is traveling.

For example, when you speak into a microphone, the sound waves produced by your voice travel through the air and are transmitted to the microphone's diaphragm. The diaphragm converts the sound waves into electrical signals, which can then be amplified and reproduced as sound through speakers.

In summary, transmission is the term used to describe the passage of a wave, such as a sound wave, through an object or medium. It is an essential concept in understanding how waves interact with their surroundings and how sound propagates through different materials.

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Complete Question

The complete question is shown on the first image

Answer:

1 The main reasons why CH4 has a higher vapor pressure at a given temperature when compared to CH3Cl is that CH4 has a smaller molar mass and does not exhibit dipole to dipole force .

2. The main reasons why H2CO has a higher vapor pressure at a given temperature when compared to CH3OH is that H2CO has a smaller molar mass and does not exhibit hydrogen bonding

3. The main reason why CH3OH has a higher vapor pressure at a given temperature when compared to CH3CH2CH2OH is that CH3OH has a smaller molar mass

Explanation:

The higher vapor pressure of the molecules at the given temperature has been based on the molar mass and the binding between the atoms of molecules.

1. The main reasons why \(\rm CH_4\) has a higher vapor pressure at a given temperature when compared to \(\rm CH_3Cl\) is that  \(\rm CH_4\):

Thus options b and c are correct.

2. The main reason why \(\rm H_2CO\) has a higher vapor pressure at a given temperature when compared to \(\rm CH_3OH\) is that \(\rm H_2CO\):

Thus options c and e are correct.

3. The main reason why \(\rm CH_3OH\) has a higher vapor pressure at a given temperature when compared to \(\rm CH_3CH_2CH_2OH\) is that \(\rm CH_3OH\):

Thus Option c is correct.

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Answer:

2 nitrogen atoms

Explanation:

nitrogen is an element therefore it cannot include any other atom

Answer:

\(Molecular \: mass \: of \: C _{2}H _{4} O_{2}.2H_{2}O , \\ \\ ⇢ 12 \times 2 + 4 \times 1 + 16 \times 2 + 2(2 \times 1 + 16) \\ \\⇢ 24 + 4 + 32 + 36 \\ \\ ⇢ 96g\)

\(\bold\pink{Percentage \: of \: substance \: in \: compound ,} \\ \\ \bold\pink{ ⇢ \frac{mass \: of \: substance}{mass \: of \: compound \times 100}}\)

\(\%\:age \: of \: water \: (H_{2}O) = \frac{36}{96} \times 100 \\ \\ ⇢ 0.375 \: \times 100 \\ \\\fbox\red{\: ⇢ 37.5\%\:}\)

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