In a portable stereo, energy is changed to energy.

In a portable stereo, electrical energy is changed to sound energy

Explanation:

A portable stereo is an electronic device that has the capability of transforming various forms of inputs such as Compact Discs, USBs, Bluetooth, radio frequency as well as microphone that carry information that is converted through processing within the stereo and put out as sound. That is a portable stereo changes electrical energy input into coded sound energy.

In a portable stereo, electrical energy is changed to sound energy.

Explanation:

A portable stereo is a sound system that works on batteries or a wired system (with a power port) that converts wave signals to translate them as sounds with a variable frequency.

In addition to that, it has different ports for the reproduction of sound elements such as:

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 :

a) the particles of the chair are strongly held together.