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How many atoms of phosphorus are in 3.44 moles of phosphorus?
It was found that 19.33 mL of an HI solution are needed to react completely with 320 mL of a LiOH solution that has a pH of 11.87. What is the molarity of the HI solution
what is the enthalpy change per mole of ethanol combusted? The specific heat capacity of water is 4.184 J/g×K and the molar mass of ethanol is 46.07 g/mol.
The temperature of the calorimeter and the 1 kg of water rose from 20.45 degrees Celsius to 23.65 degrees Celsius. The heat capacity of the calorimeter is 2.21 kJ/Degrees Celsius. Using this information, determine the heat of combustion per mole o..
Calculate the expectation values for a particle in the state n = 5 moving in a one-dimensional box of length 2.48×10^(?10)m If someone can just help me out with the set up of the problem thatd be helpful.
the reactant concentration in a zero-order reaction was 7.00times10-2 m after 155 s and 1.50times10-2 m after 370 s.
When a 2.00 g sample of RbBr is dissolved in a calorimeter that has a total heat capacity 0.6306 kJ*K^-1, the temperature decreases by 0.420 K. Calculate the molar heat of solution of RbBr.
An experiment shows that a 248mL gas sample has a mass of 0.433g at a pressure of 745 mmHg and a temperature of 28 degrees C. What is the molar mass of the gas
If 50.0 mL of 0.150 M CaCl2 is added to 50.0 mL of 0.100 M AgNO3, what is the mass in grams of AgCl precipitate?
Calculate the ratio of solubility of Mg(OH)2 dissolved in pure H2O to Mg(OH)2 dissolved in a 0.180 M NaOH solution? Express your answer numerically to three significant figures.
A 275mL sample of O2 is collected over water at 60 degrees C the total pressure 755 torr what is the volume of O2 at STP?
calculate the seperation in Energy between the ground state and the first excited state in which one electron occupies the state with n=7.
The following reaction is endothermic in the forward direction. NH4Cl(s) NH3(g) + HCl(g) For each of the following cases, briefly explain whether the action causes net reaction from left to right, right to left, or no net reaction.
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