A 250 MHz 1 H spectrum of a compound shows two peaks. The frequency of one peak is 510 Hz higher than that of the reference compound (tetramethylsilane), and the second peak is at a frequency 170 Hz lower than that of the reference compound. What chemical shift should be assigned to these two peaks?

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

What is the common name for the compound shown here? enter the common name of the compound shown?