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Brass is a substitutional alloy consisting of a solution of copper and zinc. A particular sample of red brass consisting of 80.0%Cu and 20.0% Zn by mass has a density of 8780 k/m3.
a)What is the molality of in the solid solution? (mol/kg)
b)What is the molarity of in the solution?
The complex ion [Co(CN)3]^3- absorbs a photon of wavelength 2.90×10^2 nm. What is the splitting energy of this complex in kJ/mol?
What mass of iron is needed in order to supply the energy needed to warm 15.0mL of water (d= 1.00 g/cm3) from 23C to 37C
A trainee in a medical laboratory will be released to work on her own when her results agree with those of an experienced lab technician at the 95% confidence level. Following are the results from a blood urea level:
Give a balanced equation and show how much hydrogen would be needed to reduce the triacylglycerol completely
What is the ion, charge on the ion and hybrid orbitals used by Sn
Palladium crystallizes in a face-centered cubit unit cell. Its density is 12.0 g/cm^3 at 27 degress C. Calculate the atomic radius of Pd.
CO (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0 °C. Calculate the total pressure in the container.
1. write down a set of quantum numbers for each 3d atomic orbitals.2. how many radial nodes does each of the following
Which of the following salts will make an ACIDIC solution when dissolved in water. a. NH4Cl b. Al(NO3)3 c. K2CO3 d. NaF Which of the following salts will make a BASIC solution when dissolved in water. a. NaHS b. Cu(NO3)2 c. KHCO3 d. NaF
(b) What is the partial pressure in atm of each component of this mixture if it is held in a 13.70-L vessel at 12°C? O2 mixture of 5.10 g of O2, 7.44 g of N2, and 1.26 g of H2? atm N2 atm H2 atm
How would the process of photosynthesis be affected, and in what steps, if light, CO2 concentration, and/or temperature were altered during photosynthesis
If a diagnostic test starts with 15mCi of Ga-68, how much is left after the test if the test runs for 2 hr and 15 minutes?
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