Determine the air velocity
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The metal rhodium has a FCC crystal structure. If the angle of diffraction for the (311) set of planes occurs at 36.12° (first order reflection) when monochromatic x-radiation having a wavelength of 0.0711nm is used.
25 ml of 0.1002 HA was titrated with 10 ml of 0.1997 NaOH , pH is 4.46 , what is the Ka value? and what is the pH at equivalence point.
For the reaction given below, the frequency factor A is 8.7 1012 s-1 and the activation energy is 63 kJ/mol. NO(g) + O3(g) → NO2(g) + O2(g) What is the rate constant for the reaction at 85°C?
An evacuated (empty) 276 mL glass bulb weighs 129.6375 g. Filled with an unknown gas, the bulb weighs 130.0318 g. Calculate the gas density in g/L, and express it with an appropriate number of significant figures
A Pitot-static probe connected to a water manometer is used to measure the velocity of air. If the de?ection (thevertical distance between the ?uid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m
What is the molarity of each ion in a solution prepared by dissolving 0.550 g of Na2SO4, 1.192 g of Na3PO4, and 0.228 g of Li2SO4 in water and diluting to a volume of 100.00mL?
What is the density of a sulfuric acid solution if 10.00 mL has a mass of 15.04g?
If 3.93 g of sodium borohydride contains 2.5× 1023 H atoms, how many moles of H are present in 37 cm3 of sodium borohydride (of density 1.074 g/cm3)?
A bullet of mass 0.06 kg is fired horizontally into a wooden block of mass 0.10 kg. The wooden block is suspended from the ceiling by a long string as shown in the diagram.
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