2.762g of lead oxide on reduction in a stream of hydrogen gave 2.564 of metalic lead. calculate the mole ratio of lead to oxygen and hence the formular of lead oxide formed

The clouds are grey and ground is wet. a quantitative b qualitative

Compare and contrast physical changes with chemical changes.

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons