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How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 14.0 L of H2 gas if the pressure of H2 is 757 torr at 20.0°C
Calculate the molar absorptivities for In- at 454 and 654nm, set up two simultaneous equations, and determine the molar concentrations of HIn and In- in the buffer solutions
From a thermo standpt, at NLC what principal products are expected from a rxn mix consisting of ~1 mol Al(NO3)3(s) w. ~1 mol Na2CO3(s) in ~2 L of DIW? Defend/explain your response.
Suppose that 25g of each of the following substances is initially at 27.0 degrees C. What is the final temperature of each substance upon absorbing 2.30kJ of heat
List at least three potentially hazardous features associated with concentrated sulfuric acid.
Consider the following system in equillibrium CaCO3(s) = CaO(s) + CO2(g) How many phases are present. Explain.
Working with triple point, The sublimation pressures of solid chlorine are 352 Pa at -112 C and 35 Pa at -126.5 C. The vapor pressures of liquid Chlorine are 1590 Pa at -100 C and 7830 Pa at -80C
At a given temperture, of the following reaction has a Keq equal to 25. If 0.100 mol of both SO3 and NO were placed into a 1.00 L container, what would be concentration of SO3 at equilibrium?
An empty graduated cylinder weighs 82.450 g. Whe filled to 50.0 mL with an unknown liquid it weighs 110.810 g. What is the density of the unknown liquid?
the solution has an osmotic pressure of 4.18mm Hg at 25C,what is the molar mass of new protein?
In another experiment it was determined that for each mole of hydrocarbon, 7 moles of oxygen gas are consumed and 5 moles of CO2 gas and 3 moles of H2O liquid are produced. Find ?H per mole of this hydrocarbon (in kJ) at 298 K
Explain why magnetic metals are found only among the 3d and 4f elements. Why are Sc and Ti, which are also 3d elements, diamagnetic?
Give the overall reaction for the dehydration of cyclohexanol.2. IR spectroscopy will be used to verify the isolated compound is the correct compound (cyclohexene). What stretches (presence and absence) will distinguish the product
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