What is salinity of water what does it do to the density of water

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3