What is the half-life of an isotope if after 30 days you have 31.25 g remaining from a 250 g beginning sample size?
a) 5 days
b) 30 days
c) 10 days
d) 2 days

Stage in which a typical star has completely stopped fusion

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

Which activity is an innate behavior