Which statements about velocity are true? Check all that apply.
A. The SI units for velocity are miles per hour.
OB. For velocity, you must have a number, a unit, and a direction.
O C. The symbol for velocity is .
O D. To calculate velocity, divide the displacement by time.
SUSM

> 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 density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

the answer is d.) potassium