If an element has three isotopes with masses of 10.00 amu, 12.00 amu, and 16.00 amu with respective abundances of 10.00% , 60.00%, and 30.00% what is the average atomic mass of the element?

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Which of the following units is not an official si unit? mole liter kilogram ampere