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3 years ago

What is the energy source that powers plate movement?

Chemistry

1 answer:

alina1380 [7]3 years ago

3 0

Answer:

D Earth's hot interior

Explanation:

The internal heat engine of the earth is the energy source that powers plate movement.

The sun drives the surface process and provides energy for the external heat engine

The earth's interior sources it heat from:

decays of radioactive isotopes
remnant heat from the formation of the earth
frictional heating from the movement of the earth

Therefore, the heat is used to melt rocks and set up convection currents that drives plate movements.

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The mass of a proton is 1.673 × 10-24 g. The mass of a neutron is 1.675 × 10-24 g. The mass of the nucleus of an 56Fe atom is 9.

Leokris [45]

Answer:

1.31 X 10^ -10 joules per Fe 56 atom

Explanation:

The mass of a proton is 1.673 × 10-24 g. The mass of a neutron is 1.675 × 10-24 g. The mass of the nucleus of an 56Fe atom is 9.289 × 10-23 g. What is the nuclear binding energy (in J) for 56Fe? (c = 3.00 × 108 m/s)

some of the theoretical mass will be converted to binding energy

by Einstein's famous relativity equation

E = mc^2

where E is in joules, m is in Kgm. c is in m/sec

56Fe is element 26 so it has 26 protons and 56 -26 =30 neutrons

its theoretical nuclear mass is

(26 X 1.673 X 10^-24) + (30X1.675 X 10^-24) =

(43.498 X 10^-24) + (50.250 X 10^-24)=

93.748 X 10^24 gm

but its actual mass is 9.289 X 10^-23 g or

92.289 X 10^-24 g

the mas defect is the theoretical mass minus the actual

1.459 X 10^-24 gm =^

1.459 X 10^-27 Kgm

c = 3.00 X 10* m/s=

so joules of binding energy = (1.459 X 10^-27) X 9 X10^16)

1.31 X 10^ -10 joules per Fe 56 atom

8 0

3 years ago

The hydrogen ion concentration of a vinegar solution is 0.00010 m. how is this concentration written in scientific notation?

9966 [12]

We are given with a vinegar with a hydrogen ion concentration of 0.00010 m. We are asked to express this concentration in scientific notation. The answer when expressed in scientific notation is 1x10^-4 m or molality. Answer is <span>1x10^-4 m. </span>

3 0

4 years ago

Read 2 more answers

Hydrogen is diffusing through solid nickel. At a temperature of 358 K, the diffusivity is 1.16 x 10-8 cm2/s. At a temperature of

Lelu [443]

Answer:

Q_d=35881 J/mol

So the activation energy is 35881 J/mol.

Explanation:

Consider the following equations:

$lnD_{1} =lnD_{o} -\frac{Q_{d} }{R*T_{1} }$

$lnD_{2} =lnD_{o} -\frac{Q_{d} }{R*T_{2} }$

Solving the above two equation to find the Q_d in term of diffusivity and temperature we will get:

$Q_{d}=-R*\frac{lnD_{1} -lnD_{2} }{\frac{1}{T_{1} }-\frac{1}{T_{2} } }$

where:

Q_d is the activation energy

D_1 is the diffusivity at T_1

D_2 is the diffusivity at T_2

$Q_{d}=-8.31*\frac{ln1.16*10^-12 -ln1.05*10^-11 }{\frac{1}{358 }-\frac{1}{438 } }$

Q_d=35881 J/mol

So the activation energy is 35881 J/mol.

3 0

4 years ago

37)

Natali [406]

Answer:

dont know

Explanation:

what

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7 0

3 years ago

Resonance Structures are ways to represent the bonding in a molecule or ion when a single Lewis structure fails to describe accu

AleksandrR [38]

Answer:

See explanation

Explanation:

A Lewis structure is also called a dot electron structure. A Lewis structure represents all the valence electrons on atoms in a molecule as dots. Lewis structures can be used to represent molecules in which the central atom obeys the octet rule as well as molecules whose central atom does not obey the octet rule.

Sometimes, one Lewis structure does not suffice in explaining the observed properties of a given chemical specie. In this case, we evoke the idea that the actual structure of the chemical specie lies somewhere between a limited number of bonding extremes called resonance or canonical structures.

The canonical structure of the carbonate ion as well as the lewis structure of phosphine is shown in the image attached to this answer.

8 0

3 years ago