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Suppose 128 mL of 0.429 M MgCl2 is mixed with 142 mL of 0.279 M NaOH and allowed to react completely. Volume change at precipitation can be ignored. How many grams of Mg(OH)2 will form? What is the molar concentration of Mg2+ in solution? What is the molar concentration of Cl- in solution? What is the molar concentration of Na+ in solution? What is the molar concentration of OH- in solution?
A mixture of CaCO3 and CaO weighing 0.665 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.500 g.
Write the decayreaction for this isotope and explain your prediction in terms of N/Zratio.
How much heat in kilojoules is evolved or absorbed in the reaction of 233.0 g of calcium oxide with enough carbon to produce calcium carbide? Is the process exothermic or endothermic
compare the length of a column of mercury to that of a column of water required to produce a pressure of 1.0 bar. the densities of mercury and water at 0C are 13.459g/cm^3 and .99987g/cm^3
When 4g of sodium hydroxide (NaOH) was dissolved in 100g of water, a value of 10C was obtained for ?T. Calculate the value (calories) for the heat of solution of 4g of NaOH.
A sample of neon gas is held in a rigid 1.814L container with a pressure of 1.273atm at 25 C. 3.193g of an unknown gas is added to the container. The temperature remains constant, but the pressure rises to 2.386atm. What is the molar mass of the a..
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
Calculate the degree of dissociation by A) assuming ideal behavior and B) using a mean activity coefficient y=0.93. The concentration of the acid is 0.010 M.
If the initial concentration of A=2.5 mol/L, the initial [B]=1.4 mol/L, and the rate =0.29 moles of product per liter per minute (M/min). Calculate the rate constant K to 2 decimal places.
The vessel will contain gases at pressures up to 210.0 MPa. The student's design calls for an observation port on the side of the vessel (see diagram below). The bolts that hold the cover of this port onto the vessel can safely withstand a force o..
what change in the number of moles of Ag occurs in the system? (2)what change in the concentration of Ag occurs in the system?
What is the Henry's law constant for the gas if the partial pressure of the gas in air is .0088 atm?
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