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A brass plug is to be placed in a ring made of iron. At 10 °C, the diameter of the plug is 8.741 cm and that of the inside of the ring is 8.729 cm.
1. They must both be brought to what common temperature in order to fit?
2. What if the plug were iron and the ring brass?
What volume (in milliliters) of 0.240 M NaOH should be added to a 0.125 L solution of 0.029 M glycine hydrochloride
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Using data from Appendix D in the textbook, calculate [OH?] and pH for each of the following solutions.
In a calorimetry experiment, 0.497 g of potassium hydroxide are dissolved in 25.o ml of water (density = 1.00 gml, specific heat = 4.184 j g-1 °c-1) in an insulated container. the temperature of the water rises from 21.37 °c to 26.25 °c.
What is entropy (no measure of disorder, please)? How was it introduced in science? What is its significance in chemistry? Calculate the change of entropy when the volume of 1 g of Helium is doubled, assuming that helium is an ideal gas.
Problem- The average the adult exhales about 1.0 kg of carbon dioxide each day. How much glucose (C6H12O6, 180 g/mol) is consumed to make that much carbon dioxide
Explain which of the subsequent are types of posttranslational modifications a recently synthesized protein may undergo
Drinking water in the USA cannot exceed 0.5 ppm mercury. What mass of mercury is present in 2.4 L of water at this concentration
Write the molecular formula for a compound with the possible elements C, H, N & O that exhibits a molecular ion at M+ = 96.0571. Molecular formula (In the order CHNO, with no subscripts)
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
A mixture of propane and butane is fed into a furnace where it is mixed with air. The furnace exhaust leaves the furnace at 325°C, 762.0 mmHg and contains only N2, O2, CO2, and H2O.
Methyl Orange is an acid-base indicator. In dilute solution, at pH greater than 4.4, it is yellow. At pH=3.2 the solution appears red. Draw a structure of the species that is formed at the lower pH of the acid proton adds to the azo nitrogen atom ..
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