How much heat (in calories) must be applied to a 100 ml beaker filled with boiling water in order to vaporize the water? 540 5.4 x 104 800 8,000

What is a difference between a mixture of elements and a mixture of compounds

Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent