Can you help me with initial temperature (Ti) of water? I struggled with the measurement of the thermometer.

What steps do I take to convert .00368 x 103 kJ to microJ?

A chemist prepares a solution of aluminum chloride (AIC13) by weighing out 21.89 g of aluminum chloride into a 200. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in g/dL of the chemist's aluminum chloride solution. Be sure your answer has the correct number of significant digits.

We are doing an experiment on measuring the temperature. We are to measure the temperature of hot water (measure it initially, then wait for 10 minutes then measure again). Additionally, we are to measure the temperature of another water before and after putting ice (measure initially then measure 3 times [every 5 minutes] for 15 minutes). My question are: What law or principles of chemistry could be applied in this experiment? Should we expect the temperature of the hot water to drop? why? Should we expect the temperature of the water to rise or drop after putting the ice? why?

At certain pressures, ClF forms a solid that sublimes when heated. Using a few words  and a simple diagram, explain what is happening when ClF sublimes upon heating. Be  sure your answer describes the differences in the two states of matter.

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solution to a reaction flask. Calculate the mass in kilograms of barium acetate the A chemist adds 450.0 mL of a 1.0 mol/L barium acetate (Ba(C,H,O, chemist has added to the flask. Round your answer to 2 significant digits. | kg x10