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Magnesium-28 decays via beta emission, which equation represents the balanced nuclear equation.
What is the molarity of the diluted solution. Find the molartity of the diluted solution.
How would you prepare 1 liter of .002M Na2S2O3 from a solution which was 0.1 M Na2S2O3.
A Polluted river sample is analyzed using standard BOD procedures .Data are obtained are listed below. Conclude the BOD5, BODU, and k values that best fit for the following data.
Assume two gases in a container have a total pressure of 1.25 atm. What is the pressure of gas B if the partial pressure of gas A is 0.80 atm.
Which of the following statements are true about the processes of melting and freezing? (Select all that apply.)
How long of a chain would I get if I made it out of 1.00 mole of sodium atoms (in metres)
How much contact time would be necessary for inactivating Gardia cysts using the following chemicals at concentrations and temperatures stated.
The chirality of an amino acid, and hence it optical activity, results from the fact that its α carbon is bonded to four different chemical groups. Of the 20 common amino acids, which is not o
Identify one structural feature of the acetanilide molecule that will be expected to contribute negatively to its solubility in water. Elucidate why.
Explain the results in which 1M NaOH was added to benzoic acid (soluble or not). Write the equation that supports the answer.
What happened when 6.0M NaOH was added to the contents of the tube in 9a above? Write the equation that supports your answer.
Compute ΔH, ΔE, q and w for each step. The specific heat at constant volume (sv) is 20.29 J/Kmol and at constant pressure (sp) is 12.47 J/Kmol. Is work being completed by the system in t
A 15 g sample of nickel is heated to 100 °C and placed in 55.0 g of water at 23.0°C. What is the final temperature of the solution give that the specific heat of nickel is 0.444 J/(g°C)
Calculate the standard enthalpy change for this reaction from these reactions of iron oxides with CO.
Which is the rate-determining step
Conclude both the rate law for the reaction and the rate constant k.
Formic acid is the simplest carboxylic acid. It is an important intermediate in chemical synthesis and occurs naturally, must notably in the vendom of the bee and ant stings. In fact, its name comes
To the equilibrium mixture in part a, an additional o.50 mol of H2 is added, what are the new equilibrium concentrations of all species.
A rigid plastic container holds 1.00 L methane gas at 650 torr pressure when the temperature is 21.3°C. How much more pressure would the gas exert if the temperature is raised to 44.1°C.
Air trapped in a cylinder fitted with a piston occupies 168.89 mL at 1.098 atm pressure. What is the new volume of air when the pressure is increased to 3.33 atm by applying force to the piston.
The pressure of a sample of helium in a 4.77 L container is 0.988 atm. What is the new pressure if sample is placed in a 4.51 L container.
If it takes 0.0610 L of oxygen gas kept in a cylinder under pressure to fill an evacuated 2.72 L reaction vessel in which the pressure is 0.980 atm, what was initial pressure of the gas in the cylin
The pressure in an automobile tire is 1.95 atm at 25.0°C. What will be the pressure if the temperature warms up to 36.0°C.
Calcium carbonate forms limestone, one of the most common rocks on Earth. It also forms stalactites, stalagmites, and many other types of formations found in caves. While calcium carbonate is heated