The atomic mass of magnesium is the weighted average of the atomic masses of

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

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

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as