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Q/Assume your solution contains lead and iron but not silver or nickel. Explain how will you know that:
- Either silver or lead is present ( that is, describe what you will see that will tell you at least one of these is there)
-Lead is present but not silver (how can you tell them apart)
- Either iron or nickel is present
- iron is present but not nickel
The metal hydride LiH has a density of 0.77 g/cm3 . The edge of the unit cell is 4.086 . If it is assumed that the H ions define the lattice points, does the compound have a face-centered cubic or a simple cubic unit cell?
What property of the atom did Moseley associate with the wavelength of X-rays emitted from an element in his experiments?
What is the limiting reagent? What is the theoretical yield of acetanilide? What is the percent yield if 3.3g of acetanilide is obtained?
Arrange the following molecules in the expected order of increasing boiling points: carbon tetrabromide, CBr4; butane, CH3CH2CH2CH3; fluorine, F2
Volume increases isothermally? Two pure gas species are mixed at constant temperature? Temperature increases isobarically? Pressure increases isothermally?
Classify the following salt solution as neutral acidic or basic. Explain and use quilibrium value constants
The atomic weight of a newly discovered el- ement is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a per- cent abundance of 41.7%. What is the mass of the second isotope?
the mass loss of the iron nail was 1.511. How many moles of iron were converted to Fe3+?
An empty beaker has a mass of 42.889 g. 10.00 mL of NaCl solution are placed in the beaker. The mass of the beaker and solutionis 54.129 g.
Write a chemical equation for the formation of methionyl glycine
compute the water volume that is released upon its total metabolism to carbon dioxide and H 2 O, taking into account any oxidative phosphorylation that might occur.
A student added more KSCN solution that instructed when making standard solution. assuming no other errors were made in the experiment
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