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A mixture of barium and silver salt is water-soluble. Explain what anion(s) may be present in this mixture?
If you are given a 0.25 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced
Nickel oxide crystallizes in the NaCl type of cystal structure. The length of an edge of the unit cell of NiO is 4.18A. What is the NiO bond length?
The mass of the piston and the effects of atmospheric pressure acting on the piston are such that a pressure of 500 Kpa is required to to raise it. How much energy must be transferred by heat to the helium, in KJ before the piston starts to rise? ..
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.
What is the change in internal energy (in J) of a system that absorbs 0.588 kJ of heat from its surroundings and has 0.219 kcal of work done on it?
For a material to float on the surface of water, the material must have a density less than that of water (1.0 g/mL) and must not react with the water or dissolve in it. A spherical ball has a radius of 0.50 cm and weighs 2.0 g.
If 0.66 mole of substance has a mass of 99 g, what is the molecular mass of the substance.
whats the molar solubility s of barium iodate in 0.365 m aqueous sodium iodate? explain why assumptions are fine. if
Determine the room temperature heat capacities at constant pressure for the following materials: aluminum, silver, tungston and 70Cu-30Zn brass
A 265- flask contains pure helium at a pressure of 760 . A second flask with a volume of 495 contains pure argon at a pressure of 729. If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of h..
A Nylon 4-6 polymer with an average molecular weight of 10,000g/mol is reffered to as Nylon 4-6 (10,000). If one repeat unit of Nylon 4-6(10,000). If one repeat unit of Nylon 4-6 has a molecular weight of 198.26 g/mol, how many repeat units are pr..
the data below were collected for the following reactioninitial rate0.050 0.050 0.0140.100 0.050 0.0290.100 0.100
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