Ihave two questions, i will make this 20 points (10 points per question)

1. when a chemical reaction occurs, atoms are never
a. ionized
b. rearranged
c. destroyed
d. vaporized

2. most reactions speed up when
a. the temperature decreases
b. equilibrium is achieved
c. the concentration of the products increases
d. the reactant is in small pieces

answer, i'll make you brainiest answer : )

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 :

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?