Cr(NO3)2 and CuSO4 are dissolved in water where the compounds react. In the reaction, copper metal is formed and each chromium ion loses one electron. What is the number of electrons transferred in the balanced reaction with the smallest whole-number coefficients

What are fossils of organisms that existed over a wide area but only for a limited time period called?

Select the correct answer. why are scientific models important in the study of science? a. they always involve critical mathematical calculations. b. they scientists understand complex ideas and objects that aren’t easy to handle. c. they enable scientists to popularize their work in society. d. they are required when conducting any peer review process. e. they are necessary for turning a hypothesis into a law.

Large crystals are formed when igneous rocks cool very slowly igneous rocks cool very quickly sedimentary rock is eroded metamorphic rocks change into igneous rock