after trying for hours to charge my itour20, i suddenly had an epiphany. basically if yours is the jack charging 1? you have to plug the usb jack into the port on the side of the itour and the usb into your laptop/computer, then the jack that is situated underneath the itour has to be plugged into the earphone jack port on you laptop basically thats the only way to charge it. hope this helps! i thought mine was broken for a while. dawesey.
1.6x10^-19 coulombs/electron x 12.5x10^18 electrons = 20 coulombs
This atoms charge would be +2. Electrons are negative, protons are positive, when they are in equal amounts they balance out to zero, when you lose electrons you have more protons, so the atom becomes positively charged.
Calcium-40 with a 2+ charge has lost two electrons, making it a Ca2+ ion. This ion contains 20 protons, as in all calcium atoms, and 18 electrons (since it lost two electrons).
The element is calcium and the cation is Ca2+ ion
Calcium (Ca) contains: 20 protons (positively charged) 20 neutrons (neutral) Outside of the nucleus: 20 electrons (negative charge) with the configuration 2-8-8-2 Calcium has an atomic mass of 40.08
after trying for hours to charge my itour20, i suddenly had an epiphany. basically if yours is the jack charging 1? you have to plug the usb jack into the port on the side of the itour and the usb into your laptop/computer, then the jack that is situated underneath the itour has to be plugged into the earphone jack port on you laptop basically thats the only way to charge it. hope this helps! i thought mine was broken for a while. dawesey.
Neutral or no charge.
20% charge on a 200.00 bill is 200.00*20/100 = 40.00
ions charge around £20
Always charge it when it is 20% or lower
It has 20 protons, irrespective of its charge.
The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus.The protons have a positive charge, the neutrons have no charge, and the electrons have a negative charge.
A neutral calcium atom that loses two electrons has a +2 charge.
I charge 20 dollars per square foot
1.6x10^-19 coulombs/electron x 12.5x10^18 electrons = 20 coulombs
You should charge about 20 to 30 dollars now a days.
You charge 20 a for the night and 10 for any problems