3) A 1.0 x 10² mol sample of a compound that undergoes a first order process is known to have a half-life of 15 minutes. How many moles of the sample remain
after 45 minutes?

An engineering team designs a new rocket that is faster and lighter than any other model being produced. however, the materials end up being so expensive that no company can afford to buy them. which step of the engineering process should have addressed this problem? a. know the background. b. evaluate the results. c. identify a need. d. do the work.

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a.inner transition b.noble gases c.representative d. transition

Find the number of moles of argon in 364g of argon.