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An unknown volume of water at 18.2°C is added to 16.5 mL of water at 35.0°C. If the final temperature is 23.5°C, what was the unknown volume? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.)
In a quality control analysis for sulphur impurity 5.6 g metal sample was burnt in a stream of oxygen and sulphur was converted into SO2 gas The SO2 gas then oxidizes to sulphate by using H2O2 solution towhich had been added 30 mL of 0.04M NaOH
A quantity of 6.75g of SO2Cl2 was placed in a 2.0L flask. At the equilibrium there is 0.0345mole of SO2 present. Calculate Kc for the reaction: SO2Cl2 SO2 + Cl2
A little confused on the difference between Resonance and Isomer structures. Can you explain these to me with examples. I am in Organic Chem.
Problem- 1) For the thermometer (that is most commonly used) to what degree of precision should you record the temperature? 2) What is the estimated uncertainty in the reading of the 50mL graduated cylinder that is the most commonly used?
a copper wire is strectched with a stress of 10ksi at 20deg C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 5ksi
In what way do these two isotopes differ from one another? In what respects are they the same?
A piston has an external pressure of 11.0 bar . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.570 liters.
A blight has wiped out the pineapple crop. You are asked to synthesize the ester that is responsible for the scent of pineapple, butyl butanoate. Draw the skeletal structure of the reagents needed to make this scent.
Problem- 22.69 %, 23.19%, 22.68% avrage = 22.8 % What is the percent deviation? I had 0.2 % but my teacher said it was wrong
compute the change in temperature for 4.50 grams of calcium chloride cacl2 dissolved in 90.0 ml of water h2o. assume
An experimenter has determined the relative abundance (fractional abundance) of the five naturally occurring isotopes of platinum: Pt - 192 0.80% Pt - 194 32.96% Pt - 195 33.86% Pt - 196 25.36% Pt - 198 7.22% From the above data
if 69.5 kj of heat is applied to a 1036 g block of metal the temperature of the metal increases by 11.4degc. calculate
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