Leia o texto e faça o que se pede. De acordo com o Instituto Nacional de Câncer José Alencar Gomes da Silva (Inca), o câncer de pele é o mais fre- quente no Brasil, correspondendo a 25% de todos os tumores malignos re- gistrados no país. Embora o Sol seja muito importante para a saúde, a expo- sição excessiva à luz solar é considerada o principal fator de desenvolvimento da doença, pois os raios ultravioleta, quan- do atingem as camadas mais profundas da pele, podem alterar suas células. a) De acordo com o texto, a pele é o ór- gão mais afetado pela radiação solar Identifique qual tipo de tecido está presente na pele.

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Particles vibrate in a rigid structure and do not move relative to their neighbors.

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.