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Problem- The lowest level of 14C activity that seems possible for experimental detection is 0.03 dismin-1.What is the maximum age of an object that can be determined by the carbon-14 method? The initial rate of decay is about dismin-1.
Please provide the answer of the given question on urgent basis
Which is the best solvent for recrystallizing acetanilide, water or dichloromethane (CH2Cl2)? Explain your answer to receive lifesaver rating.
If the trend in second ionization energy for the elements from lithium to flourine isn't a smooth one. Forecast which of these electrons has the highest second ionization energy as well as which has the lowest and explain.
Require to dissolve CaCl2 in water to make a mixture that is 31.5% calcium chloride by mass. If the total mass of the mixture is 278.6 g, explain what masses of CaCl2 and water should be used
How many grams of dry NH4Cl need to be added to 1.50 L of a 0.500 M solution of ammonia, NH3,to prepare a buffer solution that has a pH of 8.79. Kb for ammonia is 1.8*10^-5.
A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass. What is the empirical formula of this compound
The HCl turns the indicator red and the NaOH turns the indicator purple, but what happens to the indicator when the 2 solutions are mixed? Also, is there a temperature increase with the reaction?
Depict the initiation step one propagation step and the disproportionation termination step for the chain growth polymerization of vinylidene difluoride (1,1 -difluoroethene)
Balance each of the subsequent oxidation-reduction reactions. For each of the reaction, demonstrate how electrons are gained and lost during the reaction.
certain temperature and pressure, one liter of CO2 gas weighs 1.85 g. What is the mass of one liter of CH4 gas at the same temperature and pressure?
Question- Which should be larger the potassium ion k + or the potassium atom K. Which should be larger the potassium ion K+ or the argon atom ar. Explain
How many moles of a monoprotic acid with a Ka=4.9x10^-6 must be dissolved in 750 ml of H2O to produce a solution with pH=4.50
plaster of paris csso4 x xh2o is a fractional hydrate that is one water molecule attaches to more than one formula
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