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What is the enthalpy change corresponding to the melting of 2.5 moles of H2O? What is the system? What is the surrounding? In what direction does the heat flow? Is the process endothermic or exothermic?
What is the pressure in psi for a pressure head of 46.2 feet? What is the pressure in psi for a pressure reading, in psi, at the bottom of a 30 feet high reservoir, which has a diameter of 50 feet?
hydrogen chloride gas is shipped in a container under 5.000 mm hg pressure that occupies 20 liters at 30 celcius how many liters of gas would be produced at stp?
How many grams of oxygen are collected in a reaction where 231 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
How much thermal energy transfer is required to vaporize 1.0 metric tone of ammonia?(1 metric ton = 10^3Kg). The delta H vaporization for ammonia is 25.1KJ/mol.
Titration of sodium carbonate with HCl to the methyl orange end point involves the reaction of 1 mole of Na2CO3 with 2 moles of HCl. Write the balanced chemical equation in a.
A 235mL solution is prepared with 41.8 millimoles of an unknown sodium salt of a deprotonated organic acid (NaX). If the solution has a pH of 8.05, what is the pKa of the acid?
the heat of combustion of butane is -2878kj/mol assume a typical cigarette litter hold about 1.75 grams of butane how much energy would be released
when separated from a water solution CuSO4 forms a hydrate with 5 wlater molecules per formula unit. if 47 g of anhydrous CuSO4 are dissolved in water, what mass of the hydrate could be recovered from the solution.
Which reaction sequence would be best to prepare m-chloroaniline from benzene? a. chlorination, nitration, reduction
What is the mass in grams of 2.75 moles of CH4, How many moles are in 365 grams of K2SO4.
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
If 200ml of 2.00M HCL solution is added to 400ml of 1.00M NaOH solution What molarity will the resulting solution NaCl have?
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