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calculate the standard enthalpy of solution of agbrs in water from the enthalpies of formation of the solid and the
a long straight wire carries a current of 880 a an electron traveling at 65x107 ms is 15 cm from the wire what force
a gas is confined to a cylinder under constant atmospheric pressure when 414 of heat is added to the gas it expands and
1000 000 000 copper atoms would form a line 1 cm long how long would a line formed by 1107 copper atoms be express your
a a singly charged ion of unknown mass moves in a circle of radius 130 cm in a magnetic field of 11 t the ion was
what volume of 00955 m hci in millimeters is required to titrate 2152 g of na2co3 to the equivalent point my teacher
the distribution of coefficient kconc in ligroin divided by conc in water between ligroin and water for solute a is 75
a 235 kg gold bar at255degc is placed in a largeinsulated 0800 kg glass container at 150degc with 200 kg ofwater at
the protein lysozyme unfolds at a transition temperature of 755degc and the standard enthalpy of transition is 509 kj
gayle runs at a speed of 320 ms and dives on a sled initially at rest on the top of a frictionless snow covered hill
a tube is sealed at both ends and contains a 00100-m longportion of liquid the length of the tube is larger compared
a purification system with recycle is used to recover the solvent dmf from a waste gas containing 55 mol dmf the
the freezing point of pure camphor is 1784 oc and its molal freezing-point constant kf is 400 ocm find the freezing
a solution is prepared by dissolving 478 g of an unknown nonelectrolyte in enough water to make 0500 l of solution the
at a pressure of o2 of 100atm the mole fraction of dissolved o2 in water is 16x10-5 at 333 k what mass of o2 mm 320
a solution of silver nanoprisms that are approximately 40 nm in length displays a purple color calculate the number of
using your knowledge of ph and solubility predict what the charge would be on the amino acid phenylalanine at ph 20 130
a 00623g sample of cobalt sulfate was dissolved in dilute hcl and treated with 10 bacl2 solution the baso4 precipitate
a chain of length l and total mass m is released from restwith its lower end just touching the top of a table find the
you are given a compound with an unknown concentration and you have five samples with known concentration of the
classify each of the following redox reactions as a combination decomposition or displacement reaction give a balanced
a thermos contains 150cm3 of coffee at 85 celsius to coolthe coffee you drop two 11-g ice cubes into the thermos the
calculate the ph of a solution made from 100ml of 010m hcl 200ml of 0050m naoh and 300 ml of 020 m nacl ka for hac if
a 100-coil spring has a spring constant of 380 nm it is cut intofour shorter springs each of which has 25 coils one end