second

This page lists questions and answers that were posted by visitors named second.

Questions

The following questions were asked by visitors named second.

If a combustion chamber containing propane (C3H8; GFM = 44.1 g/mol) gas had 79.9 g C3H8, what is the mass contributed by carbon (in grams) in this propane sample?

Answers

The following answers were posted by visitors named second.

70% of new employees take a learning lessons. During first month of work they have probability of 0.04 to make mistakes while those who didn't take lessons (30%) have probability of 0.09. Given that an employee didn't make mistakes in his first month, wha...