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There are two different isotopes of bromine atoms. Under normal conditions, elemental bromine consists of Br2 molecules, and the mass of a Br2 molecule is the sum of the masses of the two atoms in the molecule. The mass spectrum of Br2 consists of three peaks. Mass (amu) Relative Size 157.836 0.2569 159.834 0.4999 161.832 0.2432 (a) What is the origin of each peak (of what isotopes does each consist)? (Enter all particles in the form AX.) mass 157.836 amu 159.834 amu 161.832 amu molecule (b) What is the mass of each isotope? (Calculate using the given masses.) lighter isotope amu heavier isotope amu (c) Determine the average molecular mass of a Br2 molecule. amu (d) Determine the average atomic mass of a bromine atom. amu (e) Calculate the abundances of the two isotopes.
Calculate the wavelength of this emitted light. B) What wavelength range would you expect this complex to absorb most strongly. Explain.
Explain the structural feature of Acetanilide molecule - Identify one structural feature of the acetanilide molecule
How many milliliters of a 0.210 M NaOH solution are needed to neutralize 25.0 ml of 0.125 M H2SO4(aq)? b) A 15.45 ml volume of 0.1327 M KMnO4(aq) is needed to oxidize 25.00 ml of a FeSO4(aq) in an acidic medium.
An aqueous solution is made by dissolving 25.8 grams of magnesium nitrate in 395 grams of water. What is the molality of magnesium nitrate.
Predict stereochemistry of the products formed if the addition of bromine to fumaric acid occurs via Syn addition
Derive a curve for the titration of 50.00mL of a 0.1000 M solution of Compound A with a 0.2000 M solution of compound B in the following list. For each titration, calculate the pH afterthe addition
Three manufacturers are producing carbonated bottled water. One company introduces carbonate by bubbling carbon dioxide into water until CT=10-3 M (equivalent to adding "H2CO3*" until CT = 1 x 10-3 M), a second adds sodium bicarbonate (NaHCO3) unt..
To be effective, intracellular signaling molecules must be inactivated/removed when their effects are no longer needed. Provide the methods by which this occurs for the following classes of intracellular messengers
Consider the following reaction at equilibrium: 2CO2(g) 2CO(g) + O2(g) Change in H degree = -514kJ a) increase partial pressure of CO2 at equilibrium
Glacial acetic acid is mixed with liquid methanol (nonaqueous). What type of organic reaction can this be characterized as?
A chemist wants to make 6.5 L of a 0.270 M solution. What mass in grams should the chemist use?
How many mL of water (density = .997g/ml at 25 degree C) are needed to dissolve 10.0g of NH4NO3 in order to prepare a .100m ammonium nitrate solution?
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