In chemistry, when given or creating a dot structure, how can you tell if it has single, double, triple, ionic, or coordinate covalent bonds? a detailed answer would be appreciated!

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?

Determine type of reaction & predict the product c3h12+o2 =