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How many grams of Ca(OH)2 are needed to neutralize 3.6 moles of HCl in 655 mL of solution? The molar mass of HCl is 36.46 g/mol. The molar mass of Ca(OH)2 is 74.1 g/mol.
Determine the new temperature and express your answer in degrees celsius,?
Compute the free energy of hydrolysis of Adenosine Tri Phosphate in a rat liver cell in which the ATP, ADP and Pi concentration
How long would it take for a radioactive isotope with a half life of 2 weeks to lose at least 70% of its radioactivity? Describe two clinical uses of Radioactivity.
Pure gold can be made into extremely thin sheets called gold leaf. Suppose that 5.0 x 102 kg of gold is made into gold leaf having an area of 3620 m2.
2NO(g) + O2(g) 2NO2(g) Given that we start with 0.035M NO(g) and 0.035M O2(g) AND end with 0.012M NO2.
A sample containing 2.40 {rm moles} neon gas has a volume of 8.00 {rm L}. Assume that the pressure and the temperature remain constant.
Determine the trend in sizes of the ions O 2- ,N 3- , F - and also explain why does the trend exist? Also describe which of the molecules contains polar covalent bonds but is NOT itself a polar molecule?
7.5g of ammonia at STP is heated to a temperature of 25C and simultaneously compressed to a volume of 8.0L. Calculate the new pressure of the gas.
An electron is con?ned to a one-dimensional box of length L. It falls from the second energy level to the ground state, and releases a photon with a wavelength of 322 nm.
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
Imagine that you model your lungs as a 5 L sealed balloon at sea level: Estimate the volume of your lungs at 100 m below the sea level.
compute the volume of sodium hydroxide that is required to make a buffer with a pH = 5.77.? given that pKa = 4.77. and initial volume of the acid solution = 1.00 Litre.
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