Find out the empirical formula of the following compound if a sample contains 0.104 mol K, 0.052 mol C, and 0.156 mol O;
Using a triple beam balance and a graduated cylinder, a student collected data on a sample of an element:
Mass of sample - 10.9 g
Volume of water - 30.0 ml
Volume of water and sample - 34.0 ml
a) Compute the density of the sample. Use important figures and units.
b) Based on Reference Table S, what element might the sample be?