Acertain radioactive nucleus undergoes exponential decay with a half-life of 10 days. the fraction of the initial sample that remains after 2 half lives?

The boiling point of liquids is very high what does it indicate

Which of the following words describe the reality that the universe looks the same from various perspective

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)