Determine the pressure of the gas trapped in the apparatus shown below when the atmospheric pressure is 700 mmHg and h = 40 mm. 1. 740
26600
3. 10
4760
3.
700

Mass of water is smething that you froma drug test or sum girl ya

Ais your answer to this

It must be measured in k.hope my answer is to you : )

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.