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The percent composition (by mass) of a compound is 40.0% carbon, 53.0 % oxygen and the rest is hydrogen. Find the empirical formula of the compound.
Prolonged exposure to mercury (Hg) vapor can cause neurological disorders and respiratory problems. For safe air quality, the concentration of mercury vapor must be under 0.050 mg/m3. Convert this number to g/L.
Important information about Galvanic cell, Consider a galvanic cell consisting of Sn wire immersed in a solution containing 10^-10 M Sn(NO3)subscript 2 and 1 M HNO3 and Ag wire immersed in 10^-2 M AgNO3 and 1 M HNO3.
What colume will 500 mL of gas at 20 degrees celsius and a pressure of 420 mm Hg occupy if the temperature is reduced to -80 degrees celsius
A .8102-g sample of impure Al(CO3)3 decomposed with HCl; the liberated CO2 was collected on calcium oxide and formed to weigh .0515g. Calculate the percentage of aluminum in the sample.
What are the Distillation ranges and Retention times of Acetone, 2-butatnone, 2-pentanone, and 2-hexanone
In the reaction below, 1 atm of H2 and 6 atm of Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kp at 800 K is K = 36, calculate the equilibrium pressure of HCl.
Identify the following compound made of H, N, and O described below. Write a Lewis structure that is consistent with the information given.
What combustion products are produced when materials made from polyacrylonitrile smolder and burn. What combination of properties is responsible for the selection of trinitrotoluene as a military explosive
Calculate the volume the gas will occupy if the pressure is increased to 1.87 while the temperature is held constant.
Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4 species that are isoelectronic with Ne.
When operational in the determination of the calorimeter constant, a DC power source reads 3.60 volts and 2.65A. The resulting thermogram has a slope of 0.0438 degrees C/
If 0.230g of sodium metal reacts with 0.355g of chlorine gas, what is the mass of sodium chloride produced
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