A vat holds 2.25(103) kg of a 22.0% solution of ethylene glycol and water. How much must be drained from the tank and replaced with an 85.0% ethylene glycol solution to obtain a 35% concentrate?

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.