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Amanda [17]
3 years ago
13

How long does it take a snail travel a distance of 3ft at 0.1ft/sec

Chemistry
2 answers:
Temka [501]3 years ago
6 0
<span>There are 5280 feet in a mile.
There are 60 minutes in an hour.
There are 24 hours in a day. 
He moves at 2 feet every 3 minutes. 
We multiply by 20. 
This means he moves 40 feet every 60 minutes (one hour) 
Now we multiply by 24. 
He moves 960 feet every day. 
5280 / 960 will gives us how many days it will take to move a mile. 
5.5 days 
5 days 12 hours. <---- Answer </span>
Rasek [7]3 years ago
4 0
5 days and 12 hours would be correct
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Hello sunrays~<br>help me with these questions ​
andre [41]

Explanation:

During the formation of BeCl2, the beryllium atom bonds with two chlorine atoms via single covalent bonds. The number of electron pairs around the central atom will be two. No lone pair is found in the molecule. If we analyse this information then we can conclude that BeCl2 has sp hybridization.

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1 year ago
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How did Bohr refine the model of the atom? How did Bohr refine the model of the atom? He developed electrochemistry. He discover
BartSMP [9]

Answer:

He developed the concept of concentric electron energy levels

Explanation:

Before Bohr's model, Rutherford's model was proposed. This model explains most of the properties of the atom but failed to explain the stability of the atom.

As per Rutherford's model, electrons revolve around the nucleus in the orbit.

But revolving electron in their orbit around nucleus would give up energy and so gradually move towards the nucleus and therefore, eventually collapse.

Bohr's proposed that the electrons around the nucleus move orbit of fixed energy called "stationary states". Electrons in these stationary states  do not radiate energy.

Therefore, proposal of concentric electron energy levels refine the atomic models.

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3 years ago
Which types of particles are charged and located within the nucleus of an atom?
Readme [11.4K]

Answer:

Protons, electron, and neutrons

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how much energy would it take to heat a section of the copper tubing that weights about 660.0 gram, from 12.93 degree Celsius to
expeople1 [14]

Answer:

                      Q  =  2647 J

Explanation:

                    Specific heat capacity is the amount of energy required by one Kg of a substance to raise its temperature by 1 °C.

In thermodynamics the equation used is as follow,

                                                 Q  =  m Cp ΔT

Where;

           Q  =  Heat  =  ?

           m  =  mass  =  660 g

           Cp  =  Specific Heat Capacity  =  0.3850 J.g⁻¹.°C⁻¹

           ΔT  =  Change in Temperature  =  23.35 °C - 12.93 °C  =  10.42 °C

Putting values in eq. 1,

                            Q  =  660 g × 0.3850 J.g⁻¹.°C⁻¹ ×  10.42 °C

                            Q  =  2647 J

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3 years ago
Which statement describes a physical change? *
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B. The surface of a silver cup turns black when it is exposed to air.
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