If atmospheric pressure measurement for taking at regular intervals from sea level to the stratopause The measurements with most likely show that the pressure

The air on a hot day compare with the air on a cold day have more energy in its molecules. The correct option is A.

The air on hot days have fewer molecules, so its volume is less than the air on cold days.

The air on hot days move faster because it contains more energy than the cold air. The molecules of hot air tend to move apart than the cold air

Thus, the correct option is A. On a hot day air molecules have more energy.

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The solubility of Al(OH)3 in 0.000010 M NaOH is 3.2 x 10⁻¹°M to 2 significant figures.

How we can calculate solubility ?

The balanced chemical equation for the dissolution of Al(OH)3 in water is:

Al(OH)3(s) + 3 OH-(aq) ↔ Al(OH)3 3-(aq)

The solubility product expression is:

Ksp = [Al(OH)3 3-][OH-]³

Since the concentration of OH⁻ is provided, we can use it to find the concentration of Al(OH)3 3- and then calculate the solubility:

[OH-] = 0.000010 M

From the balanced equation, we can see that the concentration of Al(OH)3 3- is three times the concentration of OH⁻, so:

[Al(OH)3 3⁻] = 3[OH⁻] = 3(0.000010 M) = 3.0 x 10⁻⁵ M

Substituting this value and the Ksp into the solubility product expression, we get:

1.0 x 10⁻³³= (3.0 x 10⁻⁵)¹ [0.000010]³

Solving for the solubility [Al(OH)3] gives:

[Al(OH)3] = (1.0 x 10⁻³³/0.000010³)^1/4 = 3.2 x 10⁻¹°  M

Therefore, the solubility of Al(OH)3 in 0.000010 M NaOH is 3.2 x 10⁻¹°M to 2 significant figures.

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Answer:

it readily gains another electron. the outer electron shell is closer to the nucleus, than iodine for example, which makes it less shielded (greater attraction for another electron = violent reaction to get it)

Explanation:

For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced. H₂S 2NAOH is the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

H₂S + 2NaOH → 2H₂O + Na₂S, is the chemical equation provided in the table above. The reaction between hydrogen sulfide and sodium hydroxide is a redox reaction. A redox reaction is a reaction that involves a transfer of electrons between two species. The oxidation state of sulfur (S) changes from -2 to 0; thus, the sulfur (S) atom is reduced in this reaction. Sodium's (Na) oxidation state changes from +1 to 0, indicating that it has been reduced.

The hydrogen's (H) oxidation state has not changed; it remains +1, indicating that it is neither oxidized nor reduced. The hydrogen sulfide's (H₂S) oxidation state changes from -2 to 0, indicating that it has been oxidized. The sodium hydroxide's (NaOH) oxidation state changes from +1 to -1, indicating that it has been oxidized as well. Hence, the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

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Answer:

there are 4 sulfur atom.

1. Fluid compressibility (C): Fluid compressibility refers to the measure of how much a fluid's volume changes in response to a change in pressure.

2. Solution-gas/liquid ratio (SGLR): The solution-gas/liquid ratio represents the volume of gas dissolved in a given volume of liquid at a specific pressure and temperature.

3. Fluid formation volume factor (FVF): The fluid formation volume factor represents the ratio of the volume of a fluid at reservoir conditions (pressure and temperature) to its volume at surface conditions.

4. Fluid densities (ρ): Fluid densities refer to the mass per unit volume of a fluid.

5. Fluid viscosities (μ): Fluid viscosities represent the measure of a fluid's resistance to flow.

1.  Equation: C = -1/V * dV/dP

  Symbol: C

  Unit: 1/Pascal (Pa^-1)

  Correlation: The compressibility of fluids can vary depending on the fluid type. For ideal gases, the compressibility is inversely proportional to pressure.

2.Equation: SGLR = V_gas / V_liquid

  Symbol: SGLR

  Unit: Volumetric ratio (e.g., scf/bbl)

  Correlation: The solution-gas/liquid ratio is influenced by the pressure and temperature conditions, as well as the composition of the fluid.

3. Equation: FVF = V_reservoir / V_surface

  Symbol: FVF

  Unit: Volumetric ratio (e.g., bbl/STB)

  Correlation: The fluid formation volume factor depends on the composition and properties of the fluid, as well as the reservoir conditions.

4. Equation: ρ = m / V

  Symbol: ρ

  Unit: Mass per unit volume (e.g., kg/m^3)

  Correlation: Fluid densities can vary depending on the type and composition of the fluid. For example, water has a density of approximately 1000 kg/m^3.

5. Equation: No single equation; viscosity is measured experimentally using viscometers.

  Symbol: μ

  Unit: Pascal-second (Pa·s) or centipoise (cP)

  Correlation: The viscosity of a fluid is influenced by temperature and pressure. Different fluids exhibit different viscosities, ranging from low-viscosity fluids like water to high-viscosity fluids like heavy oil.

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Answer:

i believe it's D

Explanation:

Answer:

D

Explanation:

The density of that substance will always be the same. if you cut the object into a million pieces, they would still each have the same density.

Because a material that dilates takes up a larger volume, its density decreases. This occurrence occurs in pieces in all forms of matter: for example, solids, liquids, and gases. The size, mass, and disposition of atoms affect the density of a substance.

The density of an object can convert if either the mass or volume of the object is changed. This means that the density of the general object will decrease and be more likely to float.

So we can conclude that The density of a liquid is a computation of how heavy it is for the amount measured.

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Kp for the reaction \(N2(g) + 3H(g) + 2NH_3(g)\) is 3.13 x 10⁻³

The gas ammonia (NH₃) is colourless and has a strong odour. Its molecular weight is 17.03 g/mol and it is composed of one nitrogen and three hydrogen atoms.

A balanced response is: \(3H2 + N2(g) = 2NH3 (g)\)

The partial pressure of N₂ is x/4, the partial pressure of H₂ is 3x/4, the partial pressure of NH₃ is 0.6x, and the partial pressure of NO₂ is 0.226x. The total pressure is the sum of these partial pressures:

\(x/4 + 3x/4 + 0.6x + 0.226x = 50\)

When we solve for x, we get x = 35.96 atm. Hence, we may calculate partial pressures:

PN₂ = 35.96/4 atm= 8.99 atm

PH₂ = 3(35.96)/4 atm= 26.98 atm

PNH₃ = 0.6(35.96) atm= 21.58 atm

PNO₂=0.226(35.96) atm= 8.12696 atm

Finally, we can calculate Kp using partial pressures:

Kp is equal to (PNH₃)₂ / (PN₂)(PH₂)₃ Kp is equal to (21.58)₂ / (8.99)(26.98)3 Kp is equal to 3.13 x 10⁻³

Hence, the Kp for the reaction \(N2(g) + 3H(g) 2NH_{3} (g)\) is 3.13 x 10⁻³

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Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question

mass of seawater = 550 g

volume = 500 mL

It's density is

\(density = \frac{550}{500} = \frac{11}{10} \)

We have the final answer as

Hope this helps you

To find the concentration of HCl, we need to calculate the moles of base added to neutralize the acid, the moles of acid originally in the beaker, and then use these values to determine the molarity of HCl.

a) To find the moles of base (NaOH) added, we can use the formula:

Moles of NaOH = Volume of NaOH (in L) × Molarity of NaOH

Converting the volume to liters and using the given values:

Moles of NaOH = 0.080 L × 2.5 mol/L = 0.2 mol

b) Since the reaction is a 1:1 stoichiometric ratio between NaOH and HCl, the moles of acid (HCl) will be equal to the moles of base added. Therefore, there were also 0.2 mol of HCl originally in the beaker.

c) Now, we can calculate the molarity of HCl using the formula:

Molarity (M) = Moles of solute / Volume of solution (in L)

Given that the volume of the acid is 100.0 mL (or 0.100 L) and the moles of acid is 0.2 mol:

Molarity of HCl = 0.2 mol / 0.100 L = 2.0 M

Therefore, the molarity of the HCl solution is 2.0 M.

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Answer:

Rods

Explanation:

Rods are photoreceptor cells in the eye that help us see in low light but play little to no role in color vision. Therefore, they would help Phineas to see shades of grey and large shapes in the dark,

Answer:

rods

Explanation:

Cu₂+ and Ni₂+ are expected to form low-spin complexes, while Co₂+ is not.

Negatively charged subatοmic particles called electrοns can be free—that is, nοt bοund—οr bοnded tο an atοm. There are three main types οf particles in an atοm: prοtοns, neutrοns, and an electrοn that is bοnded tο an atοm. The nucleus οf an atοm is cοmpοsed οf prοtοns and electrοns.

According to the statement provided, metal ions with d8 or more electrons will always be low-spin, regardless of the identity of the attached ligands. Based on this information, we can determine which of the ions would be expected to form low-spin complexes:

Cu₂+ (d9): Since Cu₂ + has 9 d-electrons, it falls within the range of d8 or more electrons. Therefore, Cu₂ + is expected to form low-spin complexes.

Ni₂ + (d8): Ni₂ + also has 8 d-electrons, which falls within the range mentioned. Therefore, Ni₂ + is also expected to form low-spin complexes.

Co₂ + (d7): Co₂ + has 7 d-electrons, which is less than the required d8 or more electrons for low-spin complexes. Hence, Co₂ + is not expected to form low-spin complexes.

In summary, Cu₂ + and Ni₂ + are expected to form low-spin complexes, while Co₂ + is not.

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Answer:

The correct answer is B. 1-propanamine.

Explanation:

Amines can form hydrogen bonds with water molecules, which makes them soluble in water. The more hydrogen bonding sites an amine has, the more soluble it will be in water.

Out of the given options, 1-propanamine has only one carbon chain, which allows it to form more hydrogen bonds with water molecules compared to amine molecules with longer carbon chains. Also, it does not have any other functional groups that could interfere with hydrogen bonding. Therefore, 1-propanamine would be the most soluble in water.

Hope it helps!

Answer: -2

Explanation:

The oxidation number on O in K2CO3 is -2

C, Mg, Nb, Xe, Ba, Os, and Pb are diamagnetic, while Mn and Se are paramagnetic.

Paramagnetism is the phenomenon in which a substance produces a weak magnetic field and is attracted to an external magnetic field. Diamagnetic atoms, on the other hand, produce a weak magnetic field that repels an external magnetic field. The following neutral atoms are paramagnetic and diamagnetic:

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Answer:

1. Mg²⁺   2. Cl⁻    3. PO₄³⁻

Explanation:

Answer:

1. Mg²⁺

2. Cl⁻

3. PO₄³⁻

Explanation:

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Have a great day!

Answer:

2.56g of H₂S

Explanation:

The reaction of H₂S with Pb(CH₃COO)₂ is:

H₂S + Pb(CH₃COO)₂ → 2 CH₃COOH + PbS

Where 1 mole of H₂S produce 1 mole of PbS

18.00g of PbS (Molar mass: 239.3g/mol):

18.00g of PbS ₓ (1mol / 239.3g) = 0.0752 moles of PbS

As 1 mole of PbS is produced from 1 mole of H₂S, moles needed of H₂S are 0.0752

As molar mass of H₂S is 34.1g/mol, mass in 0.0752moles is:

0.0752 mol H₂S ₓ (34.1g / mol) = 2.56g of H₂S

Answer:

valence electrons

Explanation:

Answer:

B. 4.76 atm

Explanation:

\(P_1\) = Initial pressure = 3.8 atm

\(T_1\) = Initial temperature = \(25+273.15\ \text{K}\)

\(P_2\) = Final pressure

\(T_2\) = Final temperature = \(100+273.15\ \text{K}\)

From Gay Lussac's law we have

\(\dfrac{P_2}{P_1}=\dfrac{T_2}{T_1}\\\Rightarrow P_2=P_1\dfrac{T_2}{T_1}\\\Rightarrow P_2=3.8\times\dfrac{100+273.15}{25+273.15}\\\Rightarrow P_2=4.76\ \text{atm}\)

The pressure inside the can would be \(4.76\ \text{atm}\).

Answer:

Silicon has a very high melting point due to its giant covalent structure; a lot of energy is needed to break the strong covalent bonds throughout the structure.

Explanation:

Answer:

Absolute humidity

Explanation:

Answer:

true

...................

Among the given options, there is only one chemical property, which is flammability. This property measures the capability of substance to burn or ignite when exposed to a flame.

It means that in chemical properties you should put the flammability of ethyl alcohol.

In physical properties you should put the rest of the options.

Answer:

102 degrees, the intervals go by 2

Answer:

red

Explanation:

Answer:

Explanation:

Because your brain and the TV are programed to do certain things. As if you're going back into a memory, and you're simply rewatching a season of Beyblade: Metal Fusion on the TV.

Answer:

250L

Explanation:

Data;

V1 = 200L

P1 = 10atm

T1 = 400K

T2 = 100K

P2 = 2atm

V2 = ?

To solve this question, we'll have to use the combined gas equation which is a combination of Boyle's law, Charles law and pressure law.

From combined gas equation,

(P1 × V1) / T1 = (P2 × V2) / T2

P1 × V1 × T2 = P2 × V2 × T1

Solve for V2,

V2 = (P1 × V1 × T2) / P2 × T1

V2 = (10 × 200 × 100) / (2 × 400)

V2 = 200,000 / 800

V2 = 250L

The final volume of the gas is 250L

Answer:

was constant

Explanation:

Good luck! :)

Answer:

B. was constant