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3 years ago

Why does the dime transfer less momentum?

Chemistry

1 answer:

Pepsi [2]3 years ago

6 0

Answer:

This because the mass of the dime is very less = 2.268 grams only

Explanation:

Momentum : It is product of mass and velocity of the object.The affect of momentum can be observed by the force exerted . Greater the change in momentum, greater the force exerted by the object.

The formula of momentum(p) is :

$p=m\times v$

Momentum depends upon :

1. Mass = Greater the mass of the object , greater the momentum . For example : you get more hurt by a heavy stone then a light ball when both hit you with the same velocity.

2. Velocity = Momentum of the object with more velocity is more. This application is used by the cricketers. While catching the ball , the fielder pushes his hand away. By doing this he decreases the velocity of the object. Hence the momentum decrease and the ball comes to catcher's hand easily.

The mass of dime = 2.26 gram So it has less momentum because of less mass.

Hence the force exerted or the momentum transferred by the Dime is very low .

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Rock samples, taken from the Moon, contain many of the same minerals as those found on Earth. Why might this be the case?

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The moon used to be connected with Earth. A meteor hit several billion years ago and split the Earth and Moon apart. This explains why they share the Sam properties.

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3 years ago

A sample of monochloro pentaborane (9), b5h8cl, has a mass of 20.1 g. what amount, in moles, does this mass represent?

dolphi86 [110]

The number of moles in monochloro pentaborane (9) $B_5H_8Cl$ is 0.37056.

We know that ,

Number of moles = Given mass/ Molar mass

Given mass of monochloro pentaborane (9) is 20.1 g

The molar mass of monochloro pentaborane (9) is

= $5*B + 8*H + Cl$

= $5* 10.811 + 8 * 1 + 35.453$

= 54.241

Thus number of moles = 20.1/54.241

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2 years ago

In the animation, you can see that the electrons occupy different orbitals according to the energy level of each orbital. A sing

lara31 [8.8K]

B) The He atom has two electrons that have parallel spin in its 1s orbital.

C) Electrons generally occupy the lowest energy orbital first.

D) The arrangement of the orbitals is the same in a multielectron atom and a single-electron atom

E) The C atom has two unpaired electrons.

Explanation:

In writing sublevel notations certain rules are followed:

The maximum number of electrons in the orbitals of sublevels are:

two for s-sublevel with one orbital

six for p-sublevel with three orbitals

ten for d-sublevel with five orbitals

fourteen for f-sublevel with seven orbitals

Aufbau's principle states that sublevels with lower energies are filled before those with higher energies.

1s 2s 2p 3s 3p 4s 3d 4p 5s increasing order of filling

Pauli exclusion principle states that no two electrons can have the same set of the four quantum numbers i.e electrons in the same orbital cannot spin in the same direction.
Hund's rule states that electrons go into degenerate orbitals singly first before pairing up.

Based on these principles and the animation, the following options are correct:

B) The He atom has two electrons that have parallel spin in its 1s orbital.

Helium has two electrons in the 1s orbital. From Pauli's exclusion principle, we see that the two electrons cannot spin in the same way. Therefore, they have parallel spin

C) Electrons generally occupy the lowest energy orbital first.

From Aufbau's principle, electrons go into orbitals with lower energies first before those with higher energies.

D) The arrangement of the orbitals is the same in a multi-electron atom and a single-electron atom

1s 2s 2p 3s 3p 4s 3d 4p 5s

Orbitals are arranged in the order of their energies from the lowest to the highest.

E) The C atom has two unpaired electrons.

Configuration for carbon atom is shown below:

1s² 2s² 2p²

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