What is the predicted order of fist ionization energies from highest to lowest for beryllium, calcium, magnesium, and stronium?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?

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?