An adamantium sphere with a radius of 1.6 x 10^-1m is filled with 15L of H2O. The remaining volume is filled with enough argon gas to register 3 atm of pressure and the sphere, gas, and water all start at 23 C˚. Assume no gas dissolves in the water. If the water and gas are dropped to -1 C˚, what is the new pressure of the argon gas?

D. h2o + h2o > h3o + oh- confirmed.

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.

Fake and a real . . . . . ..