What is the melting point of a solution in which 2.5 grams of sodium chloride is added to 230 ml of water?

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Which of these is an intensive property of a substance

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