3. (02.06 MC) The table compares some characteristics of two atoms.
Charged Particles
Atom Number of Neutrons Mass Number
X
10
19
Y
8
16
Use the table to determine the number of protons for each atom. Then, choose the statement below that is true about
the two atoms. (5 points)
Atom X and Atom Y are isotopes.
Atom X and Atom Y are in the same family.
Atom X is in a row below Atom y on the periodic table.
O Atom X is in a column to the right of Atom y on the periodic table.

C

Explanation:

D: Atom X is in a column to the right of Atom y on the periodic table.

Explanation:

the millers tale is the 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 :