Which of the following options is the correct value of change in energy?

At 25°C. what is the enthalpy of formation for C02 (g)?

If 890 kJ of energy is released as heat on burning 1 mole of methane (CH4) at a constant pressure. then what is the AH for a process in which a 9.6-9 sample of methane is burned at the constant pressure?

Which of the following options is the correct oxidation state of the carbon atom in C02?

Which of the following chemical reactions takes place when vanadium pentoxide is heated with chlorine gas in the presence of carbon at 750°C?

What is the correct molecular weight of chlorine dioxide (CIO2)?

A burning splint will burn more vigorously in pure oxygen than in air because ________.

Biologically important chemical groups include all of the following except __________.

A transmutation reaction must always involve a(n) ____.

In hydrochloric acid (hcl), chlorine has greater electronegativity than hydrogen. therefore, _____.

The carbonic acid-bicarbonate buffer system functions mainly to __________.