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How vulcanisation does changes the chareter of natural rubber
the structures of atoms, what bonds are and how they are made, the periodic table as far as how to understand electrons and know how many in each element. Electronegativities and polar/ non polar bonds, hydrogen bonds.
considering the given equation c3h8g 5o2g 3co2g 4h2og in which propane and oxygen reacts compute the volume of co2
Calculate a change in pH when 10 mL of 0.2 M LiOH is added to the buffer made by mixing 50mL of 0.1 M hydrobromous acid (HOBr) and 40 mL of 0.2 M of sodium hydrobromide
Show by explicit integration that (a) hydrogenic 1s and 2s orbitals, (b) 2px and 2py orbitals are mutually orthogonal.
Problem- The standard free energy of formation of nitric oxide, NO at 1000K ( the approximate temperature in an automobile engine during ignition), is 78.0 kJ/mol. Calculate the equilibrium constant, K for the reaction at 1000 K
Place the subsequent elements in order of decreasing atomic size largest to smallest: lead, phosphorus, oxygen, cesium, barium, and silicon
what are possible reasons for the differences observed in conductivity for H3PO4 and H3BO3? Explain it please. B) Write out the dissociation steps for H3PO4 and H3BO3.
Calculate the change in molar Gibbs free energy of tristearin when a deep-sea creature is brought to the surface (p = 1 atm) from a depth of 1.5 km. The density of sea water is 1.03 g/cm-3.
A 70.0 silver object and a 40.0 gold object are both added to 45.5 of water contained in a graduated cylinder. What is the new water level in the cylinder?
Problem- In the compound CCl4 (tetrachloromethane), carbon has 4 covalent bonds, how many total pairs of nonbonding electrons is in the Lewis structure for that compound
What is the splitting of the signal in the 1H NMR spectrum for the methyl protons of ethane? What is the splitting of the signal in the 1H NMR spectrum for the methyl protons of 1-bromo-2-methylpropane? Please explain?
How many liters of H_2 would be formed at 704 mm Hg and 14 degrees C if 21.5 g of zinc was allowed to react?
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