What is the chemical shift, in parts per million (ppm), if the sample is analyzed with a 400.0‑MHz instrument

Why does a red shoe appear red in daylight

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg

Ms. sullivan's class is designing a miniature roller coaster. after first setting it up, they find that it didn't have enough speed to go through the loop de loop. instead of taking out the loop, they decide to increase the height of the first hill the coaster goes down, and this adds the speed needed to make it through the loop. what would be a drawback to this plan in real life? a) no one likes loop de loops. b) there is no downside to this plan. c) a higher hill means a scarier ride. d) a higher hill takes more time and material to build.