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Suppose a piece of silver jewelry contains 6.18×1022 atoms of silver (Ag).
How many dozens of silver atoms are in the piece of jewelry?
Express your answer numerically in dozens.
in spreading liquid ammonia fertilizer the charges for the amount of ammonia used are based on the time involved plus
An ideal gas that originally had a volume of 175L at 15atm and 298K was compressed to 75L at 5.0atm. Explain what was the new temperature of this gas
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n=3 to n=1
How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution.
The density of an 40.0% w/w ethanol (C2H5OH) solution is 0.935 g/mL. What mass of ethanol does 225.0 mL of this solution contain
at 210degc a solution of 18.26 g of a nonvolatile nonpolar compound in 33.25 g of ethyl bromide c2h5br had a vapor
An average human DNA molecule has 5 X 10^8 binucleotides (rungs on the DNA ladder) of four different kinds. If each rung were a random choice of one of these four possibilities, what would the residual entropy associated with this typical DNA mole..
draw 1-fluoropentane and predict the number of hydrogens per signal in a H-NMR spectra, and the splitting for each signal?
How does a base, such as NaOH, help to catalyze the benzoin condensation when thiamine is present
The half-life of C-14 is 5730 years. A bone sample with 3.6 g of carbon has 32.6 disintegrations per minute. How old is the bone sample in years?
What is the molarity of a HCl solution if the reaction of 200 mL of the HCl solution with excess CaCO3 produces 14.0 L of CO2 gas at 725 mmHg at 18 degree celsius.
Which of the following substances has the highest boiling point a. HF b. Ar c. CH2Cl2 d. C2H6
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