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An experiment shows that a 153-mL gas sample has a mass of 0.171 g at a pressure of 761 mm Hg and a temperature of 32oC. What is the molar mass of the gas? R=0.0821 L atm / mol K
The solubility of a gas in water is 0.22 g/L at 20 kPa of pressure. What is the solubility when the pressure is increased to 115 kPa
If p-nitroacetanilide is hydrolysed in acidic solution, why does hydrolysis not take place during the nitration with HNO3 and H2SO4.
Iron (II) ions catalyze the oxidation of luminol. The intensity of the resulting chemiluminescence has been shown to increase linearly with iron (ii) concentration from 10^-10 to 10^-8 M.
Substances A2, B2, and C2 can act as oxidizing agents. Solution A2 is green, B2 is yellow, and C2 is red. In the reactions in which they participated they are reduced to A-, B-, and C- ion, all of which are colorless
The element lanthanum has two stable isotopes, lanthanum-138 with an atomic mass of 137.9 amu and lanthanum-139 with an atomic mass of 138.9 amu
When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen
Silver chloride, often used in silver plating, contains 75.27% Ag. Calculate the mass of silver chloride required to plate 225 mg of pure silver.
Which has the lowest freezing point: CaF2, (NH4)3PO4, C6H12O6, or NaNO3?
However, 1,2-dichlorobutane was more than twice as present in the products as 1,3-dichlorobutane. Account for the differencees between the two.
What does ozone do that oxygen (or any other molecule) do? How? Ozone is created in what is believed to be a two-step process. It is destroyed naturally in one of two pathways. What are those reactions? On Your Own: What is the role of UV in the d..
A compound consist of 40.00% carbon, 6.71% hydrogen and 53.29% oxygen and has a molecular mass of 180+- 1g/mole. Determine the empirical and molecular formulas of the compound.
at 700° C is 0.76 atm. Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.2 atm at 700° C.
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