Asaline solution similar to that used for intravenous drips is made by dissolving 0.45 g sodium chloride in 50.00 g water. which of the following statements concerning the saline solution and the law of conservation of mass is/are correct? 1. the mass of the saline solution is greater than the mass of water.
2. the mass of the saline solution is equal to the combined mass of sodium chloride and water.
3. the mass of the saline solution is greater than the mass of the sodium chloride.
a) 1 only
b) 2 only
c) 3 only
d) 1 and 2
e) 1, 2, and 3

E) 1, 2, and 3

Explanation:

50g H2O + 0.45g NaCl --> 50.45g saline solution

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 :

thats a little if u want the answer just look it up on google thats what i do haha : )