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Naturally occuring silver consists of two isotopes: 107Ag (51.84%) with an isotopic mass of 106.9051 amu and 109Ag (48.16%) with an isotopic mass of 108.9048 amu. What is the atomic mass of silver?
What is the pH of a 0.15 M solution of aqueous Acetic Acid. The Ka of acetic acid is equal to 1.7 x 10^-5
why is the identity of an element determined by the number of protons in its nucleus? why cant the identity be
On being heated with potassium ethoxide in ethanol (70 degrees C), the deuterium-labeled alkyl bromide shown gave a mixture of 1-butene, cis-2-butene, and trans-2-butene. On the basis of your knowledge of the E2 mechanism, predict which alkene(s),..
If 4.86 g of solid carbon dioxide was placed into an evacuated 2.00 L container, sealed, and then heated until it completely changed to a gas with a final temperature of 75 degrees celcius, what would be the pressure?
An aqueous solution with a specific gravity of 1.12 flows through a channel with a variable cross section, data taken at two axial positions in the channel are shown here. Point 2 is 6.00 meters higher than point 1.
100 mL of 0.150 M acid H2A are mixed with 100 mL of 0.340 M NaOH. Calculate the [H+] of the resulting solution at equilibrium. Ka1 = 1.0 x 10^-5 Ka2 = 1.0 x 10^-7
For phenylanaline can be modeled as particle on a ring. Calculate the wavelength of the transition from ground state to the first excited state.
If the total pressure is 1.8 atm, what is the partial pressure of ethanol?
Titration of 0.1756 g of primary standard Na2C2O4 required 32.04 mL of a KMnO4 solution. Calculate the concentration of KMnO4. Hint: to work this problem you have to write & balance the redox reaction involved
how many moles of bcl3 are needed to produce 25.0 g of hclaq in the following reaction?bcl3g 3 h2ol rarr 3 hclaq
Suppose that 1.06 g of rubbing alcohol (C3H8O) evaporates from a 64.0-g aluminum block. If the aluminum block is initially at 38°C, what is the final temperature of the block
Calculate the heat capacity of satan, i. e. Ni . if 30.0g of nickel at 100.0 c raises the temperature of 25.0g of water from 22.0 c to 30.8 c . assume no heat loss to the surroundings.
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