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3 years ago

The amount of inertia an object has depends on its speed true or false

2 answers:

7 0

False:

Inertia is the idea of an object that is moving will want to stay moving, or resist a change in direction. Inertia is more dependent on mass than speed, since a heavier object (more mass) will have more inertia. Imagine a bowling ball and a tennis ball are rolling across the floor, and you have to shoot one with a dart to change their direction. Well of course the tennis ball is going to change direction easier because it has less mass, which also means it has less inertia.

irina [24]3 years ago

6 0

The amount of inertia an object has depends on its mass. The more mass an object has, the more inertia. Inertia is an object's tendency to do nothing.

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13. How many electrons are transferred in the following reaction? (The reaction is unbalanced.) Fe(s) + I'(aq) 12(s) + Fe3+(aq)

Nat2105 [25]

Answer : The correct option is, (C) 6

Explanation :

Oxidation-reduction reaction : It is a reaction in which oxidation and reduction reaction occur simultaneously.

Oxidation reaction : It is the reaction in which a substance looses its electrons. In this oxidation state increases.

Reduction reaction : It is the reaction in which a substance gains electrons. In this oxidation state decreases.

The given unbalanced chemical reaction is,

$Fe(s)+I^-(aq)\rightarrow I_2(s)+Fe^{3+}(aq)$

Half reactions of oxidation and reduction are :

Oxidation : $Fe(s)\rightarrow Fe^{3+}+3e^-$ ......(1)

Reduction : $2I^-(aq)+2e^-\rightarrow I_2$ .......(2)

In order to balance the electrons, we multiply equation 1 by 2 and equation 2 by 3, we get:

Oxidation : $2Fe(s)\rightarrow 2Fe^{3+}+6e^-$ ......(1)

Reduction : $6I^-(aq)+6e^-\rightarrow 3I_2$ .......(2)

The overall balanced chemical reaction will be:

$2Fe(s)+6I^-(aq)\rightarrow 3I_2(s)+2Fe^{3+}(aq)$

From this reaction we conclude that the electrons are getting transferred from iron to iodine and the number of electrons transferred are 6 electrons.

Hence, the correct option is, (C) 6

5 0

3 years ago

Is a tooth made out of matter or not matter?

LenKa [72]

Human teeth are made up of four different types of tissues.

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2 years ago

Which reason best explains why metals are shiny?

alexgriva [62]

Reflection, refracting, and the energy levels of molecular orbitals

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3 years ago

Which element has properties of both metals and nonmetals?

PilotLPTM [1.2K]

<span>Metalloids have the properties of metals and nonmetals.</span>

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3 years ago

The element whose neutral isolated atoms in the ground state have three half filled orbital is

jolli1 [7]

One would be phosporous whose configuration is 1s2 2s2 2p6 3s2 3p3

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3 years ago