Apiece of lead with a mass of 25 g causes the water level in the graduated cylinder to rise 3ml. what is the density of the piece of lead?

Density is given by the formula , where D is equal to the density, m is mass of lead and v the volume of lead.

Since we are not given an initial volume  the change in volume is caused by the piece of lead which is a 3ml.

Therefore,

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

the objects have the same charge.