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Problem- The decay of 11C to 11B is a first order process with half-life 1200s. How many grams of 11C are left after 1800s if there is initially 1.0*102g of 11C?
Here is the problem which I am struggling on, please help me
A hot water bottle contains 960. g of water at 59 degree C. If the water cools to body temp (37 degree C), how many kilocalories of heat could be transferred to sore muscles
Suppose that 33.55 g of ice at -12.9°C is placed in 54.72 g of water at 99.8°C in a perfectly insulated vessel. Calculate the final temperature. (The molar heat capacity for ice is 37.5 J K-1 mol-1 and that for liquid water is 75.3 J K-1 mol-1. Th..
A compound A (C6H6) undergoes catalytic hydrogenation over Lindlar catalyst to give a compound B, which in turn undergoes ozonolysis followed by workup with aqueous H2O2 to yield succinic acid and two equivalents of formic acid.
water in an open beaker evaporates over time. as the water is evaporatingis the vapor pressure increasing decreasing or
Considering which elements are being oxidized and reduced, determine how many moles of electrons are transferred between the elements being oxidized and reduced
500cm3 of 0.250M of Na2SO4 is added to an aqueous solution of 15.0g of BaCl2 resulting in a white precipitate of insoluble BaSO4.
Think back to what you learned in this course about solutions and intermolecular forces. Why don't these to "mix" together (in other words, make a homogenous solution) when combined. Why do they separate into layers
A 6.26 g sample of a solid containing Ni is dissolved in 20.0mL water. A 5.00mL aliquot of this solution is diluted to 100.0mL as well as analyzed in the lab. The solution was determined to contain 5.16ppm Ni.
Butane gas is copresses and used as liquid fuel in dispossble cigarette lighter and light weight camping stoves. Suppose a lighter contains 2.74ml of butane. d = 0.579g/ml a, How many gm of oxygen are needed to burn the butane completely
An industrial chemist puts 1.65 mol each of H2(g) and CO2(g) in a 1.00-L container at a certain temperature. When equilibrium is reached, 0.57 mol of CO(g) is in the container.
in a strongly acidic solution the amino acid lysine esists as the dication. as the pH is raised, what monocation is formed by the loss of a proton form the dication?
What is the pH at the stoichiometric point (end point) for the titration of 50 ml of 0.20 M methyl amine CH3NH2 (aq) with 0.20 M perchloric acid HClO4(aq). For methyl amine (CH3NH2), Kb = 3.6 x 10^-4.
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