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In solid nickel the atoms are so tightly packed they touch each other. Using geometry and the equation 4r = a(2)1/2 and a = 3.524 calculate the value for r, the radius of a nickel atom.a. 2.27 b. 1.24 c. 3.9 d. 0.92 e. 4.7
A sample of H2 gas (2.0 L) at 3.5 atm was combined with 1.5 L of N2 gas at 2.6 atm pressure at a constant temperature of 25 °C into a 7.0 L flask
what is the maximum kinetic energy of a photo electron ejected from cesium by 555nm light? note that if the wavelength of the light used to irradiate the cesium surface become longer than 600 nm, no photoelectrons are emitted.
a total of 2.00 moles of a compound is allowed to react in a foam coffee cup that contains 127g of water. the reaction
What is the velocity of a first-order reaction when the reactant concentration is 6 x 10-2 M and the rate constant is 8 x 103 sec-1?
Calculate the solubility of Ag2CrO4 in grams per liter under following conditions (the solubility product constant for silver chromate is 1.1 x 10-12)
suppose that hydrogen atoms are prepared in the n=2 energy level. calculate the wavelength of light emitted by these excited atoms when returning to the ground state.
What is the effect of raising the temperature or increasing the carrier gas flow rate on the ability to resolve two closely
a chemist dissolves 0.9 g of an unknown monoprotic one acidic h acid in water. she finds that 14.6 ml of 0.426 m naoh
when hydrochloric acid comes in contact with potassium permanganate, what dangerous chemical is released?
The mercury level in the open end of the manometer is 22 mm below that in the side connected to the argon. What is the pressure of argon, in mmHg
Which side of the reaction (reactants or products or neither) is favored structurally? (f) Calculate the pH of the system that will generate a cell potential, ?E, of + 0.157 V when the ratio [Fe-S(Fe2+)]/[Fe-S(Fe3+)] = 2.25, [CoQ] = 8.17 x 10-4M, ..
A reagent bottle on the shelf labeled 0.5 M NaCl was used in place of the 0.5 M CaCl2. Assuming C2O42- to be in excess, what would be observed as a result of using this reagent in this test
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