The half-life of beryllium-11 is approximately 13.13 seconds and the atomic mass is 11.021661 u (equivalent to g/mol). Given a pure 124 g sample of beryllium-11, how many beta decays will occur in the first 5 minutes

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

In which of these cases are the two wave points considered to be in phase with each other?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.