Magnesium has three isotopes. magnesium-24 has a percent abundance of 78.99% magnesium- 26 has a percent abundance of 11.01% what is the percent abundance of mangesium- 25?

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device

What is happening when the water inside a kettle heats up and begins to boil