Which of the following is an example of how a scientist might use a model? a. the end of a slinky is moved vertically up and down to simulate a wave b. a wrench is used to tighten a nut onto a piece of wood c. stopwatches measure the amount of time it takes for runners to complete a mile d. microscopes are used to magnify a group of cells on sets of slides

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

When the water vapor cools it condenses select a number that represents his process on the

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.