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Determine the concentrations of MgCl2, Mg2 , and Cl- in a solution prepared by dissolving 1.30 × 10-4 g MgCl2 in 2.25 L of water. Express all three concentrations in molarity. Additionally, express the concentrations of the ionic species in parts per million (ppm).
95.0 mL of H_2O is initially at room temperature (22 C). A chilled steel rod at 2 C is placed in the water. If the final temperature of the system is 21.4 C, what is the mass of the steel bar?
How many degrees of temperature rise will occur when a 25.0 g block of aluminum absorbs 10 kJ of heat? The specific heat of Al is 0.900 J/g • oC.
Calculate the enthalpy change, change of H, for the process in which 37.1 g of water is converted from liquid at 4.4 degrees C to vapor at 25.0 C.
Calculate the pH of the resulting solution at each of the specified points in the titration. Initially: pH of HCl
The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia.
What is the pH of a buffer prepared by adding 0.809 mol of the weak acid HA to 0.406 mol of NaA in 2.00L of solution? The dissociation constant of is 5.66*10-7
What is the theoretical yield of AgCl if 30.2 mL of 0.1000 M AgNO3 reacts with an excess of 0.1000 M HCl
How many grams of HCl are required to react with the 344 grams of FeCl2?
The solubility product constant (Ksp) for the dissolution of CaF2 as represented by the chemical equation is 3.4 x 10-11. CaF2 (s) Ca2+ (aq) + 2 F- (aq) Calculate the molarity (M) of Ca2+ in a saturated solution of CaF2
The equilibrium constant for this reaction is Keq=4 at 110C. In a certain experiment, .6 moles each of water vapor and carbon monoxide are introduced into a 2 Liter vessel at 110C
A pure titanium cube has an edge length of 2.68 . How many titanium atoms does it contain. Titanium has a density of 4.50 g/cm3
A river of depth 2 m flows downstream at 1 m/s. A surge of depth H moves up the river at 5 m/s relative to a stationary observer on the bank of the river. Find H.
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