Wednesday, August 31, 2011

Chem Blog 3

Naturally occurring boron is 80.20% boron 11(atomic mass 11.01 daltons) and 19.80% of some other isotope. What must the mass of the other isotope be in order to have an average atomic mass of 10.81 daltons?

Tuesday, August 23, 2011

Chemistry Blog 2

Element Z was recently discovered and has three different isotopes. Isotope 1 has a mass of 45 daltons and is found in nature 33% of the time. Isotope 2 has a mass of 46 daltons and is found in nature 57% of the time, and Isotope 3 is 48 daltons and is found in nature 10% of the time. What is the average atomic mass of element Z?

Thursday, August 18, 2011

Chem post 1

How can the scientific method be applied to our everyday lives?