11. What is the concentration (in M) of an ammonia (NH3) solution if 12.23 grams of ammonia are dissolved in enough water to make 560.0 mL of solution

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

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

answer seismograph;