Why must the crucible be cleaned before weighing
Why must the crucible be cleaned before weighing at the beginning of the produce? Explain why must the crucible be heated and allowed to cool before the weighing?
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Determine the numbers of milliliters of this prepared solution are needed to furnish .5000 mol of aluminum nitrate to a reaction.
i) A rectangular surface of 0.21 m x 0.38 m is oriented in a uniform electric field of 570 N/C. Determine the maximum possible electric flux via the surface?
Calculate the safety precaution associated with handling the clay triangle, crucible and the tripod? Discuss in deatail.
Determine how does this compare with the minimum escape speed for leaving from the Earth's surface (Determine the ration of this speed too escape velocity from the surface)?
Points A and B are separated by the lake. To find distance between them, surveyor locates the point C on land such that CAB = 48.8°. He also estimates CA as 311 ft and CB as 527 ft. Determine distance between A and B.
Determine the numbers of grams of water were driven off? Determine the numbers of moles of water were driven off? Determine the numbers of percent mass of water in the hydrate?
In the first trial the procedure, The ratio of moles H20/moles CaSO4 is found to be 1,93 and in the second trial the ratio was found to be 1,98. Determine the relative average deviation of the two trials.
A 0.10mol/l solution of propanoic acid (CH3CH2COOH) is pH 2.96. Determine the percent dissociation and the Ka (Acid dissociation Constant) for this acid.
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