What is the number of valence electrons in cadmium

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius

A0.100-kilogram apple hangs in a tree 1.50 meter above the ground. ignore frictional effects, the total mechanical energy of the apples is

How many moles of sulfur dioxide are in 2.26 × 10^33 sulfur dioxide molecules?