The half - life of a specific Tc - 99 is 6 hours. How much of a 192 mg sample will have decayed after 30 hours? A) 186 mg
B) 160 mg
C) 32 mg
D) 6 mg

Is laundry detergent an acid or a base?

Adilute aqueous potassium nitrate solution is

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.