When making a molar liquid solution from a dry chemical stock, you must know the molecular weight of the compound.
(a) true
(b) false

A

Explanation:

The concentration of a molar solution is expressed in mol/L. In practice, in the laboratory, moles are not able to be measured. What can be measured is the mass of the compound, usually in g. To convert from grams to moles, the molecular weight in g/mol is required.

your picture is not part of the scientific method.

> 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.