Suppose there is a mineral body which contained some amount of superscript 238 baseline upper u, which has a half-life of 4.51 times 10 superscript 9 years, but has no lead, the end product of the radioactive decay of superscript 238 baseline upper u. if the ratio of superscript 238 baseline upper u to lead atoms today is 0.42, how long ago did the mineral body form?

How many grams of n2h4 will be consumed by 23 g of n2o4

In an effort to address concerns about global warming, a power plant in portland, oregon is designed to take all of its exhaust gases from its boilers and recycle the co2 using the solvay process to make sodium hydrogen carbonate. the reaction is shown below. nh3(g) + h2o(l) + co2(g) + nacl(aq) → nahco3(aq) + nh4cl(aq) how many liters each of nh3 and co2 (both at stp) would be consumed to produce 3.00 kg of sodium bicarbonate? the volume of both nh3 and co2 would be

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable