Recent content by reincarnated_soul

In order to find standard enthalpy change u need to work thru the equations given with the enthalpy change and treat as if u r doing simultaneous equations in algebra. U need to get the equation on the top from the two below. Since the first given equation has 2C8H18 u do not need to...

For concentration problems u must know the almighty formulae: No. of moles= Concentration x Volume (when the volume is given in L or dm^3) No. of moles=Concentration x Volume/1000 (when the volume is in mL or cm^3) And also, No. of moles=Mass/Molar Mass Then ur all set! 1. First of all...

All u need to know here is that pressure in a liquid depends upon depth and the weight of a liquid depends on the volume and ur all set!:cool:

"Elastics" Well since a weight is hung to a spring and a spring has elasticity the weight will cause the spring to extend beyond its natural length, call that extension 'x'. Now think of the forces on the weight, the tension of the spring due to its elasticity acting upwards, call that 'F'...

Weight in a lift In order to solve problems like this u should first begin by drawing a free body force diagram on a suitable object. In this respect it is the man in the lift bcuz u want to find the reading of scale (the reading of the scale does not mean the man's weight-it is in fact the...

Q1. a) 5Fe2+ + 2MnO4- + 16H+ = 5Fe3+ + 2Mn2+ 8H2O No. of moles of MnO4- in 22.1 L= CxV/1000(since the volume is in mL) = 22.1 x 0.025/1000 =5.525 x 10^-4 mol Therefore the no. of moles of Fe2+ reacted with...