From the change in the P2O5 and NaOH trap masses, determine the masses of H2O and CO2 produced. Be careful to use the change in mass of each trap for just before, and just after, the unknown sample is combusted. (You should not use the initial masses of the two traps at the start of the experiment.)

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

How to calculate the mass of copper

Suppose you increase your walking speed from 7 m/s to 15 m/s in a period of 1 s. what is your acceleration?