two units of measurement for energy are calories and joules. the measurement of 8.75 kcal is the same amount of energy as

Answer:

Examples include smokestacks, discharge pipes, and drainage ditches. Factories and power plants can be a source of point-source pollution, affecting both air and water. Smokestacks may spew carbon monoxide, heavy metal, sulfur dioxide, nitrogen dioxide, or “particulate matter” (small particles) into the air.

Answer:

The pH of the 3.03 x 10-5 m solution of hypochlorous acid is approximately 6.265.

Explanation:

The pH of a 3.03 x 10-5 m solution of hypochlorous acid (Ka 2.9 x 10-8) can be found using the equation for the dissociation of a weak acid:

Ka = [H+][OCl-]/[HOCl]

Since we are given the Ka value and the concentration of HOCl, we can solve for [H+] using the quadratic equation:

Ka = [H+]2/[HOCl]
[H+]2 = Ka x [HOCl]
[H+] = sqrt(Ka x [HOCl])
[H+] = sqrt(2.9 x 10-8 x 3.03 x 10-5)
[H+] = 5.43 x 10-7 M

Therefore, the pH of the solution can be found using the equation:

pH = -log[H+]
pH = -log(5.43 x 10-7)
pH = 6.265

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The moment of inertia about the axis through the center of mass of the two nuclei is approximately $2.95 \times 10⁻⁴⁵ \mathrm{~kg \cdot m²}$.

The moment of inertia of a diatomic molecule about an axis perpendicular to the line joining the nuclei can be calculated using the formula $I = 2 \mu R²$, where $\mu$ is the reduced mass of the system and $R$ is the equilibrium distance between the nuclei.

The reduced mass $\mu$ is given by $\mu = \frac{m_1 m_2}{m_1 + m_2}$, where $m_1$ and $m_2$ are the masses of the individual atoms.

Substituting the given values, we have

$\mu = \frac{(2.21 \times 10⁻²⁵ \mathrm{~kg})²}{2(2.21 \times 10⁻²⁵ \mathrm{~kg})}

= 2.21 \times 10⁻²⁵ \mathrm{~kg}$.

Then, using the equation for moment of inertia, $I = 2 \mu R²$, we have $I = 2(2.21 \times 10⁻²⁵ \mathrm{~kg})(0.447 \mathrm{~nm})² = 2.95 \times 10⁻⁴⁵ \mathrm{~kg \cdot m²]$.

Therefore, the moment of inertia about an axis through the center of mass of the two nuclei and perpendicular to the line joining them is approximately $2.95 \times 10⁻⁴⁵ \mathrm{~kg \cdot m²}$.

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Answer:

Aluminum Metal

Explanation:

A P E X states that it is Aluminum Metal 100% right

\(\huge{\textbf{\textsf{{\color{navy}{An}}{\purple{sw}}{\pink{er}} {\color{pink}{:}}}}}\)

3. Conducts electricity in aqueous solution.

Heat of combustion used to explain the relative stability of the compounds.

The heat of combustion definition is the variation in energy released in the form of heat through the burning of an amount of any substance, all reactants being in the standard state (temperature of 25 C and pressure of 1 atm).

When the amount is quantified for 1 mole of said substance, one can define this quantity as the molar heat of combustion.

The molar heat of combustion values are defined in kilojoules per mole (KJ/mol). The kilojoule is a unit of energy and corresponds to 1000 or Joules (J). Mole is a unit of measurement used to express the amount of matter.

Now sugar is a non electrolyte so comparatively more stable hence more energy required to decompose the sugar hence its heat of combustion value is -5639kJ/mol high.

Where as TNT used as an explosive so it is susceptible for reaction and combustion, hence low amount of heat of combustionnis required for TNT that is -3406kJ/mol whuch is comparatively lower.

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Answer:

this is ez 123

Explanation:

Answer:

A location that is humid, would most likely support a marsh ecosystem.

Explanation:

The Florida Everglades are an example of a marsh :)

"Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges."

Answer:is a trace metal of severe toxicity. Its health concerns via consumption of contaminated vegetables have often been overlooked or underestimated

Explanation: Read it carefully and it explains

The sets in σ(A,B) are the smallest σ-algebra that contains both A and B.

In probability theory and measure theory, a σ-algebra is a collection of subsets of a given set Ω that satisfies certain properties. The notation σ(A,B) represents the smallest σ-algebra that contains both subsets A and B. This means that σ(A,B) consists of all possible subsets that can be formed by taking the union, intersection, and complement of sets in A and B.

To understand this concept better, let's consider an example. Suppose we have a set Ω = {1, 2, 3, 4} and two subsets A = {1, 2} and B = {2, 3}. The σ-algebra σ(A,B) would include the empty set, the set Ω itself, as well as other subsets such as {1}, {2}, {3}, {1, 2}, {2, 3}, and {1, 2, 3}. It would also include their complements, for example, the complement of {1} would be {2, 3, 4}.

The σ-algebra σ(A,B) is important in probability theory as it allows us to define probability measures and study various properties of events and random variables. By identifying all the sets in σ(A,B), we can determine the range of events that can be analyzed within this framework.

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Three types of end products produced during fermentation lactic acid, formic acid, acetic acid durham tube to detect gas produced by microorganisms

Fermentation reacts NADH with an endogenous and organic electron acceptor and common end products of bacterial fermentation include lactic acid, formic acid, acetic acid, butyric acid, butyl alcohol, acetone, ethyl alcohol, carbon dioxide, and hydrogen and fermentation reactions are detected by the color change of a pH indicator when durham tube are mainly used in microbiology to detect gas by microorganism and gas production helps to identify the type of organism and these special tubes are placed upside down in bigger test tubes to detect the presence of gas production

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Answer:

d

Explanation:

Energy is inverse to wavelength. You can see the relationship from the combined formula E=hc/λ that if wavelength increases, energy will decrease and vice versa.

From this image you can see the electron transition series, which shows the length between energy levels. The shortest length corresponds to the highest energy transition. The shortest will be between n=5 and n=4.

Answer:

C. both

Explanation:

Therefore, the independent variable was cause and the dependent

variable was effect.

An independent variable is a variable that you manipulate or change in an experimental study to study its effects. It is called "independent" because it is not influenced by  other variables in the study.

Independent variables are also called:

These terms are especially used in statistics, where you can assess the extent to which a change in the independent variable  can explain or predict changes in the dependent variable.

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Answer:

the whole answer for everything is

temperature

solubility

temperature

solubility

clearly supported

Explanation:

hop this helped ong

Answer:

mSn=0.24375*59=14.38125

Explanation:

nHBr=1.3*0.75=0.975

nSn=1/4nHBR=0.975/4=0.24375

mSn=0.24375*59=14.38125

The first step in the preparation of magnesium metal is the precipitation of Mg(OH)₂ from sea water by the addition of Ca(OH)₂ the concentration of Mg₂ (aq) in sea water is 5.37 × 10⁻² m then ph at which [Mg₂ ] is decreased to 1.0 × 10⁻⁵ m is 1.27

Magnesium is the element and also one of the alkaline earth metal and metallic magnesium is prepared either by electrolysis of molten MgCl₂ or by metallothermic reduction of its halides by alkali or alkaline-earth metals

Here given data is concentration = 5.37 × 10⁻² m

We have to find pH= ?

pH = -log[HA]

pH = -log[Mg₂]

pH = -log[5.37 × 10⁻² m]

pH = 1.27

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Answer:

The number of moles of O atom in \((7.9\times10^{-1})\) mol of \(CO_{2}\) = 1.6

Explanation:

1 molecule of \(CO_{2}\) contains 2 atoms of O

So, \((6.023\times 10^{23})\) molecules of  \(CO_{2}\) contains \((2\times6.023\times10^{23})\) atoms of O.

We know that 1 mol of an atom/molecule/ion represents \(6.023\times10^{23}\) numbers of atoms/molecules/ions respectively.

So, \((6.023\times 10^{23})\) molecules of  \(CO_{2}\) is equal to 1 mol of \(CO_{2}\).

\((2\times6.023\times10^{23})\) atoms of O is equal to 2 moles of O atom.

Hence, 1 mol of \(CO_{2}\) contains 2 moles of O atom.

Therefore, \((7.9\times10^{-1})\) mol of \(CO_{2}\) contains \((2\times7.9\times10^{-1})\) moles of O atom or 1.6 moles of O atom.

Answer:

Sodium (Na – Natrium)

Potassium (K – Kalium)

Iron (Fe – Ferrum)

Copper (Cu – Cuprum)

Silver (Ag – Argentum)

Tin (Sn – Stannum)

Antimony (Sb – Stibium)

Tungsten (W – Wolfram)

Explanation: hope this helped?

                                                                               ··                               ··  

The balanced equation was found to be Na· + ·Cl : ---------> Na + (: cl : )-

                                                                               ..                               ..          

Define ionic bond dot diagram ?

Group 8 elements, generally known as noble gases, are noted for their inertness. They hardly never react with other elements, such as water, oxygen, or metals. This is due to the fact that they all have a complete outer shell of electrons. This is the most stable electron configuration possible for an atom.

Other elements, on the other hand, do not have this stable electron configuration. Instead, in order to obtain that ideal arrangement, they must acquire, lose, or share electrons. Ionic bonding is one method for doing this.

the answer for the ionic bond dot diagram for the Nacl was found to be.

           ··                              ··

Na· + ·Cl : ---------> Na + (: cl : )-

           ..                              ..

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The silica tetrahedron is formed of 4,1 oxygen

1) The silica tetrahedron is formed of 4,1 oxygen and 1,4 silicon atoms.

2) The mineral that would produce the weakest material to build on is (b) muscovite.

3) Quartz has a value of (b) 7 on the Mohs hardness scale.

4) Energy resources is one of the grand challenges engineers will face in the future.

5) When water mixes with anhydrite, it can form (b) gypsum.

Gypsum is a hydrated calcium sulfate mineral that forms when anhydrite reacts with water.

This reaction leads to the formation of gypsum crystals, which can have various applications in construction and industry.

The formation of gypsum is a result of the water molecules incorporating into the anhydrite structure, resulting in the hydration of the mineral.

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Answer:

the answer is A

Explanation:

Forces are the intermolecular interaction between the matter. Forces present in a solid are strongest. Thus, option A is correct.

The matter is any substance that occupies a volume. Matter can be a solid, gas, or liquid. The solid phase particles are tightly closed to each other making the force strong.

The particles of liquids that are not too compact are a little free and in gases, the particles are very free, which makes the bonding and the force the weakest.

Therefore, option A. the solids have the strongest intermolecular bonding.

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Answer: Ocean-dwelling because whales don't live in lakes

Explanation:

thermohaline circulation is driven by: density differences

Mass per unit volume is measured using the density unit. Given that it is an intense property, the size of the item has no bearing on the value of the property. Density Physics-related meaning The mass-to-volume ratio of an object is known as its density in physics. Mass per unit volume is a frequent definition. Chemistry's use of density The density of a substance in chemistry is a measurement of how much mass there is per unit volume. It is a physical characteristic that is intense, which means that the size of the object has no bearing on its value.

thermohaline circulation is driven by: group of answer choices the coriolis effect. longitude. density differences. wind. latitude.

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Answer:

It would be C because its continuing to the next. It doesn't stop nor does it absorb anything.

Explanation: I hope this helps :) I'm only in 8th grade but this seems easy so if I am wrong I am soo sorry.

Yes, a hydrogen atom in the ground state can absorb a photon of energy less than 13.6 ev.

The wavelength of the matter waves that make up an electron orbit around a nucleus is the same as the radius of the orbit. Any fractional number would not fit the circle of the electron orbit, but a whole number of wavelengths might. Atomic excitations, in which the electrons take in a photon to enter a higher energy state, are another process that an atom goes through. As a result, electrons' wavelength can shift, which also causes the electron's orbit to alter. The relationship between an electron's energy and wavelength is inverse. An electron in the ground state can therefore absorb a photon with energy equal to the energy difference between the ground state energy and excited state energy during atomic excitation.

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1.  the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.  the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.

1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.

First, let's calculate the moles of NaOH in the initial solution:

moles of NaOH = volume (in L) × concentration (in M)

moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles

After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.

To find the final concentration, we divide the moles of NaOH by the total volume:

final concentration of NaOH = moles of NaOH / total volume

final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M

Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.

First, calculate the moles of KOH in the initial solution:

moles of KOH = volume (in L) × concentration (in M)

moles of KOH = 0.125 L × 3.01 M = 0.37625 moles

After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.

To find the final concentration, divide the moles of KOH by the total volume:

final concentration of KOH = moles of KOH / total volume

final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M

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The actual yield of the oxygen in the reaction is 4.32 g.

The equation of the reaction is;

Ba(ClO3)2 → BaCl2 + 3O2

Now we have that ;

Number of moles of the barium chlorate is;

Number of moles = mass/Molar mass

= 15 g/304 g/mol

= 0.049 moles

If 1 mole of barium chlorate produced 3 moles of oxygen

0.049 moles of barium chlortae will produce 0.049 * 3/1

= 0.147 moles

Mass of the oxygen produced = 0.147 moles * 32 g/mol

= 4.7 g

Then we have that;

Percent yield = Actual/Theoretical * 100/1

92 = x/4.7 * 100/1

92 * 4.7 = 100x

x = 92 * 4.7/100

x = 4.32 g

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Answer:

A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius. The complete combustion of a large kitchen match, for example, gives you about one kilocalorie of heat

Answer:

1: table sugar has more calories

2: Hydrogen and carbon monoxide and smaller quantities of methane, carbon dioxide, and hydrocarbons

Explanation:

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