An ionic compound is A. a salt

B. held together by a transfer of electrons

C. composed of anions and cations

D. held together by sharing of valence electrons

Choose all that apply. when creating a graph, you should: determine the x- and y- variables label the scale on the x- and y- axes plot the data points draw a line of best fit to represent the data trend

Express the following number in scientific notation. 0.026890 =

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?