How does plastic impact the environment as a result of human activities

What is the relation between concentration of reactants and the rate of chemical reaction?

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?