An astronomer is a guest speaker at your school. She states that iron is the very last product in stellar fusion. Why would she say that? Why wouldn’t elements in stars fuse to make larger atoms than iron? select one:
a. The star’s core has no more room left in the interior to fuse larger nuclides

b. It takes much more heat than the star has in its core to fuse iron with another atom.

c. Iron has a tightly bound nucleus, and atoms larger than iron are less stable and tend to undergo nuclear fission.

d. Iron is a metal, and metals cannot undergo fusion.

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c