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Question:
Talc (used in talcum powder) has mass- composition 19.2% Mg, 29.6% Si, 42.2% O, and 9.0% H.
What is the empirical formula of the compound.
Presume you have just added 200.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 100.0 ml of 0.5000 M NaOH. Explain what is the final pH. The Ka of acetic acid is 1.770 ×10-5.
A 14.0 L gas cylinder is filled with 8.00 moles of gas. The tank is stored at 9 degrees celsius . What is the pressure in the tank
Suppose a solution of of naoh (a strong base) had been submitted for the nh3 (a weak base) in the procedure, predict the appearance of the solution as a result.
when cooncentrated cacl2 aq is added to na2hpo4 aq a white ppt forms that is 38.7 ca by mass. write a net ionic
If [a = 2.84 (+/-) 0.02], [b = 5.02 (+/-) 0.04], [c = 21.71 (+/-) 0.06], and [d = 9.49 (+/-) 0.04], calculate the absolute uncertainty in y if y = (a+b)/(c-d).
Explain how much salt in grams would need to be added to 1.84L of water to increase the boiling point by 4.36 °C? Utilize 1.00 g/mL for density of water.
Write the chemical equation for the overall reaction that would occur when the original compound was converted to a chloride
Define what volume of fuel should you bring? Assume each of the following the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water
2-hexanol was prepared by reacting an alkene with either hydroboration-oxidation or oxymercuration-reduction. Draw the structure of the alkene that was used to prepare the alcohol in highest yield.
Identical hard spheres of radius R are packed together to form a simple cubic lattice. What is the ratio a/R, where a is the edge length of the unit cell
Heisenberg Uncertainty Principle Use the Heisenberg uncertainty principle to calculateΔx for an electron withΔv = 0.120 m/s. By what factor is the uncertainty of the (above) electron's position larger than the diameter of the hydrogen atom?
in a basic aqueous solution chloromethane undergoes a substitution reaction in which cl- is replaced by oh-ch3claqoh-aq
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