Given the following data for the hydrate M(NO3)3 dot X H2O, where M is a metal with the atomic mass 35.57 g/mol, Mass of Crucible and Lid 34.9126 Mass of Crucible, Lid and Hydrate 39.5907 Mass of Crucible, Lid and Anhydrous Salt (3rd Heating) 37.1499 How many molecules of water are in one formula unit of the hydrate? In other words what is the value of X? X should be a whole number, so choose the percentage of water for the hydrate that is closest to the percentage of water calculated for this experiment. HINT: X is between 6 and 18.

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2