Ahardware salesman measures the mass of a box containing 1000 washers. the mass is 1.3301 kg . what is the mass of a single washer in milligrams? write your answer as a decimal.

The mass of a washer is 1330.1 mg.

Mass = 1 washer × (1.3301 kg/1000 washers) = 0.001 3301 kg = 1.3301 g

= 1330.1 mg

explanation:

detials on each model with digrams

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 :