What is the mass of a sample of a substance with a volume of 120 ml and a density of 0.75 g/ml?

Density=mass / volume.

0.75= mass / 120.

mass= 0.75×120.

mass=90g

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.