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Use Lewis Symbols to show the sharing of electrons between a silicon atom and hydrogen atoms to form a molecule in which silicon has an octet of electrons.
how many moles of Ba(OH)2 are present in 165ml of 0.600M Ba(OH)2.
how many grams of NaNO3 would you add to 250.0g of H2Oin order to prepare a solution that is 0.500 molal in NaNO3
The vapor pressure of the benzene is 92.00 torr at this temperature; The vapor pressure of the solute is negligible. What is the vapor pressure of the solution?
Using standard molar entropy values, calculate delta standard molar entropy values for the following reactions. In each case account for the sign of delta standard molar entropy.
If 0.420 mol of a nonvolatile nonelectrolyte are dissolved in 3.20 mol of water, what is the vapor pressure P_{\rm H_2O} of the resulting solution? The vapor pressure of pure water is 23.8 \rm torr at 25 \rm{^\circ}C.
The ion is stabilized due to the delocalization of the positive charge to the aromatic ring. Draw resonance structures that indicate the stability of this ion.
Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 1.00-L metal bottle that contains air at 98K and 2.0 atm pressure is sealed off. If we inject 60.0 mL of liquid helium and allow the entire system to warm to room temperature
How many mL of 5.0 M NaOH can be added before its buffering capacity is exhausted?
Choose one of the following atmospheric issues: air pollution, global warming, ozone depletion, and acid deposition. Then, respond to the following,
Describe how soap works, include a drawing of a micelle in your description. Describe the difference between saturated and unsaturated fats. How can you as a consumer tell one from the other?
What is the concentration of the solution as a mass percentage?
Calculate ΔG° at 25°C for the redox rxn between Sn4+ and Fe that takes place in a voltaic cell if E°cell= 0.60V. The rxn is: Sn4+(aq) + Fe(s)→ Fe2+(aq) + Sn2+(aq)
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