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Question: A conical diffuser has an inlet diameter of 15 cm. The pressure, temperature, and velocity at the inlet to the diffuser are 70 kPa, 60°C, and 180 m/s, respectively. If the pressure at the diffuser exit is 78 kPa, find the exit diameter of the diffuser.
The carbon atom is lighter and makes carbon compounds gaseous while the heavier silicon atoms makes liquids and solids.
What is the numerical value of the rate constant and what are the units? D) Calculate the rate of this reaction when the initial concentrations of OCl- and I- are 7.6 x10-3 M and 9.6 x 10-3M respectively.
The to * transitions of purine and pyrimidine bases in DNA results in absorbance of light at 260 nm. If the extinction coefficient for a PCR primer of DNA is 1.00 x 104 M-1 cm-1
Potassium hydrogen phthalate (KHP) is used as a primary standard acid to accurately determine the molarity of a NaOH solution via a titration. The formula of KHP isKHC8H4O4 and has a molar mass of204.23 g/mol.
Question- Calculate the concentrations of all species in a 0.620 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
a 0.421-g sample of asprin prepared in ther laboratory isdissolved in 95 ethanol diluted with water and titrated to
A 111.2mL sample of 0.110 M methylamine CH3NH2, Kb = 3.7*10-4) is titrated with 0.255 M HNO3. Compute the pH after the addition of each of the subsequent volumes of acid.
A flask contains a mixture of hydrogen and oxygen. The pressure exerted by these gases is 785 mmHg. If the partial pressure of the hydrogen in the mixture is 395 mmHg, what is the partial pressure of the oxygen?
Determine the empirical formula of a compound that is 36.86% N and 63.14% O by the mass
Limestone (CaCO3) is decomposed by heating quicklime (CaO) and carbon dioxide. Calculate how many grams of quicklime can be produced from 9.0 kg of limestone.
Distilled water in equilibrium with air contais dissolved carbon dioxide at a concentration of 1.0 x 10^-5 M. Calculate the pH of such a solution.
A ruby laser produces radiation of wavelength 633 nm in pulses with a duration of 1.00*10^-9s. If the laser produces 0.475 J of energy per pulse, how many photons are produced in each pulse?
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