If you used 5.50 g of baking soda to bake a delicious chocolate cake, how many ionic units of baking soda broke down to form other substances.​

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Which diagram represents the phase tha occurs after a solid melts?

Which of the following best describes technology a. something created for only scientists to use b.the method of thinking that scientists use. c.the application of engineering to create useful products. c. a scientific idea