Answer:
Density=7.86g/cm³
Explanation:
To solve this exercise, we only need to <u>convert units.</u> To do so, we can use a three-step process:
- Identify the units that the problem gives us.
- Identify the units that we must report in the answer.
- Use the appropiate conversion factor in order to convert the units in 1.) to the units in 2.)
In this case, the units we're given are kg and cm³, and the units we must convert them into are g and cm³. Keeping in mind the conversion factor of 1000 g = 1 kg, we convert the mass of the plate:
Then we divide the mass by the volume, that is already in cubic centimeters:
Answer and Explanation:
Because metallic bonding involves delocalized electrons. It is described as a "<em>sea of electrons</em>", because the electrons are not confined around the nucleus of metal atoms, but they are delocalized: thay can be located in one nucleus and then in another neighbor atom. Thus, the electrons have more freedom to move from one part of the metal to another and electricity is well conducted.
Photovoltaic cell is the correct answer ,it converts sunlight into electricity.Hope this helped!
D answer is D and that is your answer
A. number of protons in the nucleus