A: 6 moles
You have to find the molar mass and then multiply
Urban areas seem to have giant increases and de creases compared to rural
Answer:
A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge. Therefore it is a positive ion.
Explanation:
Lithium, an alkali metal with three electrons, is also an exception to the octet rule. Lithium tends to lose one electron to take on the electron configuration of the nearest noble gas, helium, leaving it with two valence electrons.
Answer : The energy of one photon of light is .
Solution : Given,
Frequency = (1Hz = 1 second period)
Formula used :
where,
E = energy
h = Planck's constant =
= frequency
Now put the given values in above formula, we the value for energy of one photon.
Therefore, the energy of one photon of light is .