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Rhenium (Re), with a mass number of 187 as well as an atomic number of 75, decays by beta emision. Recognize the product of the nuclear reaction by providing its atomic symbol, mass number and atomic number
Water has seeped through the pore spaces in the glass cup. 4. The relative humidity of the air near the glass cup is approaching 0 percent. 5. The dew point temperature was not reached.
Explain the major product or products formed when each of the subsequent reacts with a mixture of concentrated HNO3 and H2SO4.
The reactant concentration in a first-order reaction was 8.20×10?2M after 10.0s and 6.10×10?3M after 90.0s. What is the rate constant for this reaction
Calculate the number of grams of alcohol present in 1.00 L of 69 proof gin. The density of ethanol is 0.798 g/mL.
Write the chemical equation for the reaction of the basic ion with water to produce hydroxide ion. 1. NaC2H3O2 2. NaHCO3 3. Na2CO3 4. NH4Cl
You have prepared a saturated solution of X at 20C using 27.0 g of water. How much solute can be dissolved if the temperature is increased to 30 C?
Assuming no loss of water and a heat capacity for the vessel of 10.0 J/C, what is the final temperature of the system ( C of copper = 0.387J/gC) ? What is the final temperature?
A 12.5% by mass solution of sodium chloride (NaCl) in water has a density of 1.115 g/mL at 20 degrees C. What is the molarity of this solution
How many minutes would a solution of Cd2+ have to be electrolyzed with a 2.420 A current to plate out 1.77 g of Cd? min
6 M HNO3 could not be found on the reagent shelf. Instead, 6 M HCL is added to the test solution. Instead, 6 M HCl is added to the test solution. a) What affect does this have on the test for sulfide ion. Explain
What is the molar concentration of the solution of 37.5g Ba(MnO4)2 per Liter? What is molar concentration with respect for each ion, Ba2+ and MnO42-
Demonstrate that the linear combination A + iB and A-iB are n other mitian if A and B are hermitian operators.
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