In the following chemical equation, how many oxygen (o) atoms are on the reactant side? 2n2o5 → 4no2+o2
and explain if

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

What is the equation for electrical work?

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)