Calculate the molar mass of Nitrogen (N)

What is the subscript for oxygen in its molecular formula

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges

Sari is studying for different sample of materials. this table shows the mass and volume of the samples. which sample material(s) could be liquid