Which of the following is a false statement about reactions? a. mass can’t be created or destroyed in a chemical reaction b. compounds that form have different properties than the ‘old’ reactants. c. atoms are rearranged in a reaction and joincto form new molecules d. when a reaction gets cold, that means energy is destroyed

What molecule does hemoglobin decay into over time

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing