All categories

3 years ago

Explain the difference between the bohr model and the electron cloud model

Chemistry

1 answer:

Vesnalui [34]3 years ago

4 0

Answer:

An electron cloud model is different from the older Bohr atomic model by Niels Bohr. Bohr talked aboutelectrons orbiting the nucleus. ... Theelectron cloud model says that we cannot know exactly where an electron is at any given time, but the electronsare more likely to be in specific areas.

You might be interested in

For this reaction, C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ. If two moles of C3H8(g) reacted with excess oxygen,

BartSMP [9]

A) 4400 kj of heat released into surroundings

<h3>Further explanation</h3>

Reaction

C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ

Reaction exothermic( ∆H=-, released heat to surrounding) and for combustion of 1 mole of C3H8

So for two moles of C3H8, the enthalpy :

$\tt -2200\times 2=-4400~kJ$

7 0

2 years ago

Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. Th

Vlada [557]

Answer:

the mass required to inflate a 72 L bag is 191.491 g

Explanation:

reaction:

2 NaN3 ↔ 2 Na + 3 N2

conditions:

V = 72.0 L
STP: P = 1 atm ∧ T = 298 K

gas law:

PV = RTn
R = 0.082 atm * L / K * mol

⇒ n = PV / RT

⇒ n = ((1 atm) * ( 72.0 L)) / (0.082 atm*L / K*mol) * (298 K)

⇒ n = 2.946 mol

⇒ m = n * Mw = ( 2.946 mol ) * ( 64.99 g/mol)

⇒ m = 191.491 g

7 0

3 years ago

How do sedimentary rocks form on Earth's surface?

Nady [450]

nnAnswer:

Explanation:

8 0

3 years ago

In nature, one common strategy to make thermodynamically unfavorable reactions proceed is to couple them chemically to reactions

padilas [110]

Answer:

$\triangle G= -6.7 KJ/mol$

Explanation:

From the question we are told that:

Chemical Reactions:

X=A⇌B,ΔG= 14.8 kJ/mol

Y=B⇌C,ΔG= -29.7 kJ/mol

Z=C⇌D,ΔG= 8.10 kJ/mol

Since

Hess Law

The law states that the total enthalpy change during the complete course of a chemical reaction is independent of the number of steps taken.

Therefore

Generally the equation for the Reaction is mathematically given by

$T = +1 * X +1 * Y +1 *Z$

Therefore the free energy, ΔG is

$\triangle G=1 * \triangle G*X +1 * \triangle G*Y +1 * \triangle G *Z$

$\triangle G= +1 * (14.9) +1 * (-29.7) +1 * (8.10)$

$\triangle G= -6.7 KJ/mol$

5 0

2 years ago

What is the balanced chemical equation for the combustion of sulphur

nikitadnepr [17]

Answer:

S+O2⇒SO2

Explanation:

3 0

2 years ago

Read 2 more answers