7. Which element from the table above is an lon? Charge? Is it an anion or a cation? (3 points) Element: Charge: Type: plzzz help. my assignment it's almost due!!!

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Which of the following are guidelines to follow for obtaining accurate observations

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?