Wednesday
July 30, 2014

Posts by Darali


Total # Posts: 9

chemistry
What is the coordination number of [Pt(NH3)4]2+

chemistry
The complex [Cr(H2O)4Cl2]? contains Cr(II). What is the charge on the complex?

chemistry
2-Methyl-2-propanol (tert-butanol) reacts to give 2-chloro-2-methylpropane (tertbutyl chloride) and 2-methyl-1-propene. The reaction mechanisms are:

Chemistry
Calculate ÄG°373 in kJ for the following reaction at 100 °C, using data from your text. 5SO3(g) + 2NH3(g) --> 2NO(g) + 5SO2(g) + 3H2O(g) Enter answer in decimal form, including the sign.

Chemistry
Using data in table below and S °(NH3(g))= 192.5 J·mol-1·K-1, calculate ÄfS° for NH3(g) in J·mol-1·K-1. Compound S °, J·mol-1·K-1 Compound S °, J·mol-1·K-1 C(s) 5.69 H2(g) 130.6 N2(g) 191.5 O2(g) 205....

chemistry
Consider a 675-mL container at 499 °C in which the pressure of nitrogen is 1.98x106 Pa. a) What mass of nitrogen (in g) is present in this container? b) How many molecules is this?

chemistry
A pressurised can of whipped cream has an internal pressure of 1.11x105 Pa at 25.0 oC If it is placed in a freezer at -15.0 oC, what is the new value?

chemistry
A 0.010 M solution of a weak monoprotic acid is 3.0% dissociated. What is the equilibrium constant, Ka, for this acid?

Chemistry
Combustion analysis of 0.284 g of a compound containing C, H, and O produces 0.623 g of CO2 and 0.340 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol-1. What is the compound's: Empirical Formula: Molecular Formula:

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