In 5.49 seconds, 1.2 grams of Argon-35 decay to leave only 0.15 grams. What is the half-life of Argon-35 A- 21.96 seconds
B- 16.47 seconds
C- 1.83 seconds
D- 1.3725 seconds

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

What is the mass of 4 molecules of co2