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Choose the correct total number of electron domains (bonding and nonbonding) about a central atom if the angle(s) between the electron domains have the approximate values of 90, 120, and 180 degrees. a) The central atom has 1 electron domains. b) The central atom has 3 electron domains. c) The central atom has 4 electron domains. d) The central atom has 5 electron domains. e) The central atom has 2 electron domains.
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
While shutdown, the core accidentally went critical and the reactor pressure vessel rose in temperature and was hot for two hours, but all instrumentation has failed and no one is sure what the temperature was.
When potassium hydroxide runs out and we have to use potassium carbonate instead. Will potassium carbonate be a good titrant to use for selective precipitation?
A pair of enantiomers is named below. For each stereoisomers, draw the structure. Be sure to specify the stereochemistry via wedge-and-dash bonds.
Why is the boiling point of octane, C8H18, higher than that of methane, CH4, if they are both nonpolar molecules? 7-Using a diagram to illustrate your answer, explain the effect of temperature on the vapor pressure of a liquid.
Write the balanced net ionic equation for the reaction between KMnO4 and Na2S2O3 in neutral
A stock solution is prepared by adding 21 mL of 1 M AlCl3 to enough water to make 76 mL. What is the Cl- concentration of 40 mL of the stock solution?
the equation of line determined from a beer's law plot is y=0.195x+0.4. what is the resistance of an unknown water sample if the assumed concentration is 650ohms.
The final temperature of the calorimeter is 150°F. What is the mass of titanium used? The specific heat capacity of water is 4.184 J g-1 °C-1.
Many drugs that arenatural Bronsted bases are put into aqueous solution as their much more soluble salts with strong acids. The powerful painkiller morphine, for example, is very slightly soluble in water, but morphine nitrate is quite soluble in ..
Once the pKw's at the three temperatures are determined, the Van't Hoff equation can be used to determine Delta H for the reaction, and from that Delta G, and Delta S can be calculated.
When thermal equilibrium is reached, the temperature of the glass and the water is 29.9 "C. What is the specific heat capacity of the glass?
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