Water inside a i m^3 rigid box is heated from 25 °c to 35 °c. think about how to estimate the final pressure inside the tank if initially the water -(a) is saturated liquid, (b) is saturated vapor, (c) is liquid and the pressure inside the box is 1 atm, (c) consists of 0.9 m of liquid and 0.1 m of vapor, (d) consists of 0.5 m of liquid and 0.5 m' of vapor, (e) consists of 0.1 m'of liquid and 0.9 m of vapor, (1) has a mass of 1000 kg () has a mass of 0.02 kg (h) has a mass of 100 kg, (i) has a mass of 20 kg (i) has a mass of 0.5 kg (k)-1 (bar) - table 11.2 volume expansivity b and isothermal compressibility k of liquid water at 1 atm versus temperature density b x 106 k x 109 (°c) (kg/m) 999.84 -68.14 50.89 999.70 87.90 47.81 998.21 206.6 45.90 995.65 303.1 44.77 992.22 385.4 44.24 988.04 457.8 44.18

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases