The value of the metal in 2p coins, made in 1991 is now worth 3.3p.
suggest why a 2p coin made in 1991 is now worth 3.3p

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

Who determined the nature of chemical bonds?

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions