A new element, Heightsium, has two isotopes. Hi-212 has a mass of 212.000312 amu and a abundance of 65.45%. Hi-215 has a mass of 215.000012 amu and an abundance of 34.55%. What is the average atomic mass of this element?

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c

Acontrol during an experiment. might change remains constant does not exist does change