Balance

- Al(NO 3 ) 3 + K 2 S → Al 2 S 3 + KNO 3

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

Which of the following is most likely true about water in chemical solutions?

One similarity and one difference between an element and a mixture of elements