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3 years ago

Which one of the following is a decomposition reaction?

Physics

2 answers:

horsena [70]3 years ago

8 0

It would be A because Decomposition is when a substance breaks down into two.

borishaifa [10]3 years ago

4 0

<h3><u>Answer;</u></h3>

A. 2SO3 (g) → 2SO2 (g) + O2 (g)

<h3><u>Explanation;</u></h3>

A decomposition reaction is a type of chemical reaction where a single compound is broken down into two or more elements or new compounds.
<em><u>Decomposition reactions involve a single substance as a reactant and more than one substance as the product.</u></em> Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.
In the question above; <em><u>the reaction; 2SO3 (g) → 2SO2 (g) + O2 (g) is an example of decomposition reaction.</u></em>

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The magnetic dipole moment of Earth has magnitude 8.00 1022 J/T.Assume that this is produced by charges flowing in Earth’s molte

ziro4ka [17]

Answer:

$2.08\cdot 10^9 A$

Explanation:

The magnetic dipole moment of a circular coil with a current is given by

$\mu = IA$

where

I is the current in the coil

$A=\pi r^2$ is the area enclosed by the coil, where

$r$ is the radius of the coil

So the magnetic dipole moment can be rewritten as

$\mu = I\pi r^2$ (1)

Here we can assume that the magnetic dipole moment of Earth is produced by charges flowing in Earth’s molten outer core, so by a current flowing in a circular path of radius

$r=3500 km = 3.5\cdot 10^6 m$

Here we also know that the Earth's magnetic dipole moment is

$\mu = 8.0\cdot 10^{22} J/T$

Therefore, we can re-arrange eq (1) to find the current that the charges produced:

$I=\frac{\mu}{\pi r^2}=\frac{8.00\cdot 10^{22}}{\pi (3.5\cdot 10^6)^2}=2.08\cdot 10^9 A$

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3 years ago

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kumpel [21]

Answer: it should be cut with a chainsaw

Explanation:

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What type of pressure is transmitted by fluids

Evgesh-ka [11]

Cerebrospinal fluid or Hydrocephalus

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3 years ago

A car was at a 30km marker and began to drive. The car passed a 90km marker and the time had changed 30

dolphi86 [110]

Answer:

i think it's 2km pm

Explanation:

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2 years ago

A boy is whirling a stone around his head by means of a string. The string makes one complete revolution every second; and the m

Damm [24]

Answer

given,

Tension of string is F

velocity is increased and the radius is not changed.

the string makes two complete revolutions every second

consider the centrifugal force acting on the stone

= $\dfrac{mv^2}{r}$

now centrifugal force is balanced by tension

T = $\dfrac{mv^2}{r}$

From the above expression we can clearly see that tension is directly proportional to velocity and inversely proportional to radius.

When radius is not changing velocity is increasing means tension will also increase in the string.

8 0

3 years ago