What is one reason why rock layers are not horizontal? a) they were formed at and angle b) a force pushed the rock layers after they were formed c)they were formed vertically d)the area was once covered by water

What are the percent by mass of copper in penny lab

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?