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3 years ago

Which of the following is an example of heat transfer through conduction?

Chemistry

2 answers:

Bumek [7]3 years ago

8 0

Answer:

a pan on the stove getting hot

Explanation:

Conduction is type of heat transfer that involves vibration of particles transferring heat to the ones next to them by collisions. So it requires contact between substances.

Hot air rising is convection which is typical of fluids. The sun drying our clothes is radiation of waves from the sun. And microwaves as the name suggestion heats through radiation of waves. A pan on the stoves however relies on the physical contact between the stove and the pan. So particles of the stove vibrate colliding with the pan particles transferring energy

slava [35]3 years ago

7 0

A pan on the stove getting hot, because the pan is conducting the heat from the stove.

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At equilibrium, the total amount of the product(s)

sasho [114]

Answer: D may be equal to, greater than, or less than the total amount of the reactants.

Explanation:

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2 years ago

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Nacl , or halite, dissolves in water. which type of bond is most abundant which allows it to dissolve?

Hitman42 [59]

Intermolecular bonding:
Water is a polar molecule exhibit dispersion forces and hydrogen bonding
Salt is a polar molecule exhibit dispersion forces and dipole dipole bonding

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3 years ago

Given: N2 + 3Cl2 → 2NCl3, ΔH = 464 kJ/mol Use the given bond energies and the periodic table to calculate the energy change in t

guapka [62]

The given chemical reaction is:

$N_{2}+3Cl_{2}-->2NCl_{3}$

Δ $H^{0}_{reaction}=$ ∑BE(reactants)-∑BE(products)

= {(941 kJ/mol) + (3 * 242 kJ/mol)} -[{2*(3*200 kJ/mol)}]

= 467 kJ/mol

Calculating the change in heat when 85.3 g chlorine reacts in the above reaction:

Moles of chlorine = $85.3 g Cl_{2}* \frac{1 mol Cl_{2}} {70.91 g Cl_{2} }$

= 1.20 mol $Cl_{2}$

Heat change when 1.20 mol chlorine reacts

= $1.20 mol * \frac{467kJ}{mol} =560.4 kJ$

6 0

3 years ago

A student went to the dentist and found out that he had a cavity. He always brushes his teeth twice a day, so he didn't understa

goldenfox [79]

Ph measures how acidic or basic something is. The lower the number the more acidic it is going to be.

Drink A is basic, he can drink that

Drink B is neutral, he can drink that

Drink C is acidic, he should avoid

Drink D is basic, he can drink that

Drink E is acidic, he should avoid

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3 years ago

1.00 mole of an ideal gas at STP is cooled to -41°C while the

qwelly [4]

Answer:

V₂ = 18.13 L

Explanation:

Given data:

Mole of gas = 1 mol

Initial temperature = 273 K

Initial pressure = 1 atm

Final volume = ?

Final temperature = -41°C (-41+273 = 232 K)

Final pressure = 805 mmHg (805/760 = 1.05 atm)

Solution:

First of all we will calculate the initial volume of gas.

PV = nRT

V = nRT/P

V = 1 mol × 0.0821 mol.L/atm.K × 273 K / 1 atm

V = 22.4 L/atm / 1 atm

V = 22.4 L ( initial volume)

Now we will determine the final volume by using equation,

P₁V₁/T₁ = P₂V₂/T₂

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Now we will put the values.

V₂ = P₁V₁ T₂/ T₁ P₂

V₂ = 1 atm × 22.4 L × 232 K / 273 K × 1.05 atm

V₂ = 5196.8 atm .L. K / 286.65 atm.K

V₂ = 18.13 L

5 0

3 years ago