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Question- how fast must a 140.7-g baseball travel in order to have a Broglie wavelength that is equal to that of an x-ray photon with wavelength=85.0pm? Answer in scientific notation.
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determine the molarity of a saturated aqueous solution of nai formed as 25degree celsius assuming that the added nai
Calculate the volume (in mL) of He collected at STP when 3.60 g of pure 226Ra is stored in a closed container for 135 years.
The millipede ejects the compound shown below to protect itself from its enemies. Identify the functional group circled.
50.0 mL of an HCl solution with a pH of 3.5 neutralizes 200.0 mL of a Ca(OH)2 solution.What is the molarity of the Ca(OH)2 solution?
Question- NH3 is a weak base (Kb = 1.8x10^-5) and so the salt NH4Cl acts as a weak acid. 1) What is the pH of a solution that is 0.065 M in NH4Cl
Use the periodic table to write electron configurations for each of the following elements. Represent core electrons with the symbol of the previous noble gas in brackets. S Ge Zr Sb
Assuming that the formal charge on the central atom can't be larger than +/- 1, what is the number of important resonance forms for this ion
At a certain temperature the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0640 g/L. Explain what is the Ksp of this salt at this temperature
1.000 g sample of a metal chloride, MCl2, is dissolved in water and treated with excess aqueous silver nitrate. The silver chloride that formed weighed 1.286 g. Calculate the atomic mass of M.
While 8.8 g of toluene is mixed with 10 g of pure nitric acid, only 9.3 g of trinitrotoluene (TNT) is recovered from the mixture when it is separated from other undesired byproducts. Compute what is the percent yield of the synthesis
What mass of CaCl2 , when dissolved in 100.00 g of water, gives an expected freezing point of 5.0°C; CaCl2 is ionic? What mass of glucose would give the same result?
How many hours will it take to plate 14.0 kg of chromium onto the cathode if the current passed through the cell is held constant at 31.0 A? Assume the chromium in the electrolytic solution is present as Cr3+ .
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