1. Johan started attending swimming lessons. On the first day, he
suffered from pain on his body as he had used a wrong technique to
jump into the water . Explain the reason for Johan's
injury. (Relate to water surface tension).

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h