The binding of oxygen to fe^{2+} in the first heme pushes the iron ion out of the porphyrin ring, decreasing the affinity for the second oxygen.
true / false.

False

Explanation:

The uptake and the release of the oxygen in the hemoglobin is monitored by a effect known as cooperative effect. It states hat when one oxygen molecules i being added to one of the four heme units of  the hemoglobin, there will be some structural changes in the heme which further facilitates the uptake of the oxygen for the second heme and thus further facilities for the other two heme units with much greater rates.

This is same with the release of oxygen from one unit of the hemoglobin which further facilitates the removal of the oxygen from other units. Hence, the given statement is false.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :