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Titanium (IV) oxide, TiO2, is heated in hydrgoen gas to give water and a new titanium oxide, Ti?O?. If 1.598 g of TiO2 produces 1.438 g of Ti?O?, what is the formula of the new oxide?
a calorimeter contains 27.0 ml of water at 13.0 circc. when 1.30 g of rm x a substance with a molar mass of 81.0 gmol
Phenolphthalein is an acid base indicator. What color does it possess in the presence of excess hydrogen (i.e., hydronium) ions?
The effective nuclear charge is approximated as the total nuclear charge minus the number of core electrons. Thus, effectively, core electrons decrease the nuclear charge felt by the valence electrons because they are between the nucleus and the v..
When elemental sulfur S8, , is heated with AgF , a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product.
Adding magnesium ribbon (about .5g) in a solvent of 100mL of HCl acid in a polysterne cup as my calorimeter. my question is why and how would my calculated anthalpy of reaction be inaccurate if:
A mixture of gases contains 8.10 g of N2, 1.90 g of H2, and 3.50 g of NH3. If the total pressure of the mixture is 2.60 atm, what is the partial pressure of each component?
When 1.6768 g of an organic iron compound containing, Fe, C, H and O was burned in O2, 3.1363 g of CO2 and 0.89758 g of H2O were produced. What is the mass percent of hydrogen in the compound?
What are the typical values of ΔH in kJ/mol for aqueous solutions?
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
Which statement is true concerning the reaction... N(g) + N(g) = N2(g) + energy?
A current of 4.65 A is passed through a Ni(NO3)2 solution for 1.10 hours. How much nickel is plated out of the solution
Calculate the final temperature after the two substances are mixed together. The specific heat of water is 4.184 J/ g *c and the specific heat for silicon is 0.7121 J/ g*c.
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