Complete the following blanks on the basis of law of conservation of mass. 1) Na + O2 > 2NaO
8 g + 65 g --->

2) 2H2 + O2 → 2H2O
24 g + → 62 g

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor