Which is the best hypothesis to use for this investigation?

Which formula can be used to calculate the molar mass of hydrogen peroxide

State one important difference between a physical change and a chemical change?

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i