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What is the final temperature (in oC) of a 39.2 g sample of aluminum (specific heat = 0.900 J/(g K)) which absorbs 85.8 kJ of heat when it warms from 75.6oC?
potassium chloratedecomposed when heated to produce potassium chloried and oxygen gas. if 2.50 grams od kclo3 were
A sprinter set a high school record in track and field, running 200.0 in 21.2 . What is the average speed of the sprinter in kilometers per hour
Other than S=C=S; can I have S triple bonded to C single bonded to S? Wouldn't there be three electrons left on the triple bonded S; it would be sharing three when it started with six I don't understand? Help please.
Calculate the molarity of a solution made by adding 31.3 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 250 mL of solution.
Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite
In each of the following groups of substances, pick the one that has the given property. Explain your reasoning for each.
if you have 200.0 g of radioisotope with a half-life of 5 days. how much isotope would remain after 15
Comment on whether or not it is/was worthwhile to add Vitride to a sluggish Grignard reagent formation based on your answer to part 2 above as well as based on how you characterized the product.
Compute the pH in the titration of 25.0mL of 0.200 M pyridine, C5H5N(aq) after addition of 37.0mL of 0.200 M HBr.
a steel tank with a volume of 9.583L contains N2 gas under a pressure of 4.972 atm at 31.8C Calculate the number of moles of N2 in the tank.
Use line notation to represent the electrochemical cells for each of the following overall redox reactions. Part A: Ni2+(aq)+Mg(s) Ni(s)+Mg2+(aq)
at 25.0degc a sample of xe gas occupies 545 ml in a piston-cylider apparatus when the external pressure is 751 torr. at
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