If 48.6 g of Mg react completely with 32.0 g of O2 how much MgO will be produced

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

i think the answer is a.keratin is the pigment responsible for skin color.