What is the average atomic mass of einsteinium? what are its common isotopes?

Lewis structure and molecular geometry for nh2cl

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.