A car follows a curved highway from point a to point B covering a distance of 50 km and displacement to the east of 40 km in 0.5 hours. What is the speed and velocity of a car in kilometers per hour? Speed: Km/h. Velocity: Km/h.

The net heat transferred to the gas in this process is zero.

To construct the p-V diagram, we need to analyze the given processes and understand how the pressure and volume change.

Process 1: Expansion at constant temperature

The initial state is given as 3.50 moles of helium gas at a pressure of 2.80 atm and a temperature of 180.0 °C.

The gas expands at constant temperature until its volume has tripled. Since the temperature remains constant, the gas follows Boyle's Law, which states that the product of pressure and volume is constant: P₁V₁ = P₂V₂.

Since the volume triples, V₂ = 3V₁.

Therefore, the pressure decreases to one-third of the initial pressure, P₂ = P₁/3. We can plot this as a horizontal line at constant temperature.

Process 2: Constant-pressure compression

After expansion, the gas undergoes constant-pressure compression and returns to its initial volume. This means the volume decreases while the pressure remains constant at P₂. We can plot this as a vertical line.

Combining both processes, the p-V diagram will consist of a horizontal line followed by a vertical line, forming a rectangular shape.

To evaluate the net heat transferred to the gas, we need to consider that the process occurs at constant temperature.

In an ideal gas, at constant temperature, the net heat transferred is zero according to the first law of thermodynamics.

This is because any heat added to the gas during expansion is equal to the heat extracted during compression.

Therefore, the net heat transferred to the gas in this process is zero.

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Answer:

B. Intermolecular forces are hard to overcome

Explanation:

A high boiling point indicates greater inter molecular forces between the molecules of the substance. Inter molecular forces is the force of attraction between the molecules of the substance, which has to be overcome or broken before the substance boils. Example, when water boils, the water molecule (H₂O) will be broken into hydrogen molecule and oxygen molecule.

Therefore, a high boiling point temperature indicates that intermolecular forces of the substance are hard to overcome.

B. Intermolecular forces are hard to overcome

Answer:

b

Explanation:

Answer:

true

Explanation:

Names for such acids consist of the prefix “hydro-“, the first syllable of the anion, and the suffix “-ic”. Complex acid compounds have oxygen in them. For an acid with a polyatomic ion, the suffix “-ate” from the ion is replaced with “-ic.”

The statement that accurately describes a fission reaction is that more energy is required to split the nucleus of an atom than the energy actually released during a fission reaction. That is option A.

Fission reaction is defined as the disintegration of a heavy unstable nucleus into two or more smaller nuclei with the release of energy.

The energy required to split the unstable nucleus is greater than the one released because heavy elements are involved.

Therefore, the statement that accurately describes a fission reaction is that more energy is required to split the nucleus of an atom than the energy actually released during a fission reaction.

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The role that each organism play in this garden ecosystem include the following:

This comprises of organisms and the physical environment in which they interact with.

Earthworms are found in the soil and function as decomposers while butterfly acts as pollinators.

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Answer:

bird: consumer

earthworm: decomposer

flower: producer

butterfly: consumer

Explanation: i got it right :p

Answer: there could be two lunar eclipses per year

Answer:

Deep partial-thickness wounds

Answer:

append()

Explanation:

just took this test, chose this answer, and got it correct

Answer:

d

Explanation:

I guess it is a small world cuz i doing the test on flvs to

hope this helps

Answer:

5.57 x 10^24 atoms

Explanation:

first, you are seeking the number of ATOMS of Boron.

Boron has an Atomic mass of 10.8 g/mol (see #5 on the periodic table)

100 gm of Boron would have 100 g /10.8 g/mol =9.26 moles

each mole has Avogadros number of atoms 6.02 x 10^23

9.26 moles has 9.26 x 6.02 x 10^23 atoms =5.57 x 10^24 atoms

Answer:

One reaction that can be used to show the difference between a weak acid and a strong acid is the reaction with magnesium. When magnesium is added to hydrochloric acid, a vigorous reaction occurs, releasing hydrogen gas and forming magnesium chloride:

2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g)

In contrast, when magnesium is added to ethanoic acid, a slow reaction occurs, releasing hydrogen gas and forming magnesium ethanoate:

2CH3COOH(aq) + Mg(s) → Mg(CH3COO)2(aq) + H2(g)

The reason for the difference in reaction rate between the two acids is due to their different levels of dissociation in water. Hydrochloric acid is a strong acid and completely dissociates in water, releasing a high concentration of hydrogen ions (H+) in solution. In contrast, ethanoic acid is a weak acid and only partially dissociates in water, releasing a low concentration of hydrogen ions in solution. As a result, the reaction between magnesium and hydrochloric acid is more vigorous because of the high concentration of hydrogen ions in solution, whereas the reaction between magnesium and ethanoic acid is slower due to the lower concentration of hydrogen ions in solution.

Explanation:

Answer:

correct comparative pH, such as, 0-3 (strong) 4-6 (weak) • named reaction, such as, with a reactive metal or a named carbonate • comparative results or observations of the named reaction, such as, faster reaction (strong) or greater volume of gas produced in a given time (strong) 

Explanation:

Explanations of different results • weak acids are only partially ionised in aqueous solution • strong acids are completely ionised in aqueous solution/ greater concentration of H+ ions • aqueous solutions of acids at the same concentration/ powder, same temperature

Answer:

Because water can absorb a lot of heat without significant changes in temperature, it can prevent change in the temperature, and therefore pressure, of the compressed air.To maintain a constant temperature, we again pass the compressed air through the same chambers, this time letting it take up heat from the water

When zinc and chlorine react, they form an ionic compound known as zinc chloride.

This reaction involves the transfer of electrons from the metal, zinc, to the non-metal, chlorine. Zinc has two valence electrons in its outermost shell, while chlorine has seven electrons. Zinc donates two electrons to each chlorine atom, forming two zinc ions with a +2 charge and two chloride ions with a -1 charge.

The opposite charges attract, and the ions bond to form a crystal lattice structure, which is the ionic compound, zinc chloride. The formula for this compound is ZnCl₂, where Zn represents the zinc ion and Cl represents the chloride ion.

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Answer

84.8485 g

Explanation

Initial temperature, T₁ = 148 °C

Final temperature, T₂ = 20.4 °C

ΔT = T₂ - T₁

ΔT = 20.4 - 148

ΔT = -127.6 °C

Since heat is released, i.e heat loss, then Q = -324.8 calories

specific heat of the lead bar, c = 0.0300 cal/g°C

Using Q = mcΔT, we can find m as shown below

The mass of the bar is 84.8485 g

Answer:

Explanation: For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6. The same holds true for pH values above 7, each of which is ten times more alkaline (another way to say basic) than the next lower whole value.

HOPE THAT HELPS

Answer: deciding on the appropriate equipment

The temperature at which 37 g of both copper(II) sulfate and potassium chloride dissolve in 100 g of water is approximately 38 ⁰C.

The solubility of a substance is its ability to be dissolved in water.

The solubility of 37 g of Copper (II) sulfate is determined from the solubility curve of Copper (II) sulfate.

The solubility of 37 g of potassium chloride is determined from the solubility of potassium chloride.

Thus, from the solubility charts, the temperature at which 37 g of both copper(II) sulfate and potassium chloride dissolve in 100 g of water is approximately 38 ⁰C.

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The  ionization energy and electronegativity are important factors to consider when determining whether an element will gain or lose electrons when it forms ions.

Ionization energy and electronegativity are two important factors that determine whether an element will gain or lose electrons when it forms ions.

Ionization energy is the energy required to remove an electron from an atom, while electronegativity is the measure of an atom's ability to attract electrons towards itself.

If an element has a high ionization energy and a low electronegativity, it is more likely to lose electrons when it forms ions. This is because it requires a lot of energy to remove an electron from the atom, and the atom does not have a strong attraction for electrons.

Conversely, if an element has a low ionization energy and a high electronegativity, it is more likely to gain electrons when it forms ions. This is because it is easier to remove electrons from the atom, and the atom has a strong attraction for electrons.

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The correct answer is:

Keq<1, ΔG∘>0

When a system is at equilibrium, the forward and reverse reactions occur at equal rates. At this point, the concentrations of the reactants and products do not change over time. The equilibrium constant (Keq) is a measure of the relative concentrations of the reactants and products at equilibrium.

If the reactants are more abundant at equilibrium, it means that the equilibrium lies towards the side of the reactants. This suggests that the value of Keq is less than 1, since the ratio of products to reactants is low. Additionally, a positive ΔG∘ (standard free energy change) indicates that the reaction is not spontaneous in the forward direction, meaning that energy must be added to the system to proceed in that direction.

Therefore, the correct statement is: Keq<1, ΔG∘>0.

It's important to note that this answer assumes standard conditions (25°C, 1 atm pressure, and 1 M concentration). At different temperatures and concentrations, the values of Keq and ΔG∘ may change.

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Answer:

21%

Explanation:

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

To determine the molarity of the NiCl2 solution, we can use the stoichiometry of the balanced chemical equation and the concept of molar ratios.

The balanced chemical equation for the reaction between NiCl2 and NaOH is:

NiCl2 + 2NaOH -> Ni(OH)2 + 2NaCl

From the equation, we can see that 1 mole of NiCl2 reacts with 2 moles of NaOH.

Given that 10.0 mL of a 0.250 M NaOH solution is used, we can calculate the number of moles of NaOH:

moles of NaOH = volume (L) x molarity

moles of NaOH = 0.010 L x 0.250 M

moles of NaOH = 0.0025 mol

According to the stoichiometry of the balanced equation, 1 mole of NiCl2 reacts with 2 moles of NaOH. Therefore, the number of moles of NiCl2 is half of the moles of NaOH:

moles of NiCl2 = 0.0025 mol / 2

moles of NiCl2 = 0.00125 mol

Now, let's calculate the molarity of the NiCl2 solution:

Molarity (M) = moles of solute / volume of solution (L)

Molarity = 0.00125 mol / 0.030 L

Molarity = 0.0417 M

Therefore, the molarity of the NiCl2 solution is 0.0417 M.

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Answer:

Fossil fuels, such as coal, oil, or natural gas, release carbon back into the atmosphere.

The processes would be decomposition, diffusion, erosion, respiration, and combustion.

Explanation:

Hope this helped?

Answer:

So the total mass is 50 plus 150 grams the heat capacity 4.18 joules per gram per degree C. And the temperature change is 36 minus 25 and so we can calculate Delta H for the reaction that takes place.

Explanation:

Answer:

Sure. Here are the interpretations of the chemical equations you provided:

2KClO3 (s) → 2KCl(s) + 3O2 (g)

In terms of interacting particles:

Two potassium chlorate (KClO3) molecules decompose to form two potassium chloride (KCl) molecules and three oxygen (O2) molecules.

In terms of interacting numbers of moles:

Two moles of KClO3 react to form two moles of KCl and three moles of O2.

4NH3 (g) + 6NO(g) → 5N2 (g) + 6H2O(g)

In terms of interacting particles:

Four ammonia (NH3) molecules react with six nitric oxide (NO) molecules to form five nitrogen (N2) molecules and six water (H2O) molecules.

In terms of interacting numbers of moles:

Four moles of NH3 react with six moles of NO to form five moles of N2 and six moles of H2O.

2Zn(s) + O2 (g) → 2ZnO(s)

In terms of interacting particles:

Two zinc (Zn) atoms react with one oxygen (O2) molecule to form two zinc oxide (ZnO) molecules.

In terms of interacting numbers of moles:

Two moles of Zn react with one mole of O2 to form two moles of ZnO.

I hope this helps! Let me know if you have any other questions.

Explanation:

Answer:

No

Explanation:

I'm not educated enough on the matter but from what I've been taught water boils at 100 Celsius and it simultaneously evaporates.

Arial and Jay tracked the N and C budget in the Kuparuk River using historical data as well as water quality sensors placed in the river in 2017 and 2018.

ConocoPhillips runs the second-largest oil field in North America, the Kuparuk River Unit (Kuparuk), on Alaska's North Slope, 40 miles west of Prudhoe Bay. Kuparuk was found in 1969, and in 1981 it started producing oil. By 1992, it was producing at a record-breaking 322,000 barrels per day.

The North Slope & Cook Inlet sandstones still hold immense, undiscovered petroleum potential, despite nearly 60 years of industrial oil and gas extraction in Alaska.

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Explanation:

Organic........you cholo

Answer:

Electrons are discharged by the positive ions on the skin surface.