2. How many years will be needed for the decay of 1/16 of a given amount radium 226? (1/2 life-1662years)

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull