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Chemical analysis of olivine (orthorhombic, Z=4) shows that it contains 40.99 wt % SiO2, 50.00 wt % MgO, 8.99 wt % FeO and a trace of MnO. The measured cell dimensions are a=4.76A, b=10.21A, c=5.99A. Determine the density of this member of the olivine family.
The two new DNA molecules formed in replication. The nucleotides in the backbone of DNA are held together by bonds.
Draw the structures of the adduct of (i) 2 molecules of resorcinol with 1 molecule of furfural and (ii) of 3 molecules of resorcinol with 1 molecule of 5-hydroxymethylfurfural.
At volume of 0.200 M K2Cr2O7 will be required to oxidize the Fe2+ iron in 60.0 mL of .200 M FeSO4 solution?
A certain constant-pressure reaction is nonspontaneous at 45oC. The entropy change for the reaction is +72 J/K. What can you conclude about the sign and magnitude of the enthalpy
a 5.0 l bulb filled with 175 torr of he and a 7.5 ml bulb filled with 325 torr of kr are connected together allowing
two hypothetical ionic compounds are discovered with the chemical formulas acl2 and bcl2 where a and b represent
It's volume is 224mL at a temperature of 60 degrees Celsius and a pressure of 880 torr. Find the molar mass
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
Calculate the theorical yield (in grams) of potassium alum that could be obtained in the reaction. The molar mass of potassium alum is 474.39 g/mol.
Explain the type of nonrenewable energy resource used and their short-term and long-term effects on the environment
sample of unknown HCL solution reacts completely with Na2CO3 to form 15.1g CO2, What was the concentration of the HCL solution?
1000g of Na2HPO4 is dissolved in 100mL of water. using mass balance and charge balance deterimne the pH of the resulting.
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