Suppose you've just heard an opera singer warm up her voice. Write your own science question about the sounds a singer makes.

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.