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3.60 g of liquid methanol, CH3OH, is placed in an empty 20.0 L container at 45.0°C. If the volume of the container is compressed to 1.40 L at 45.0°C, how many grams of vapor are present? Assume the temperature remains constant and the volume of any liquid is negligible. The vapor pressure of methanol at 45.0°C is 205 mm Hg.
a 0.456 gram sample of an unknown mono- protic acid lets call it hz was dissolved in some water you pick the amount.
A copper wire with a mass of 4.32 g reacts with sulfur to form 5.41 g of a copper sulfide compound. a) Determine the number of moles of copper and sulfur in the compound. b) Determine the empirical formula of the product.
Sulfur dioxide is released in the combustion of coal. Scrubbers use aqueous slurries of calcium hydroxide to remove the SO2 from flue gases
Using the equation E0cell = E0cathode - E0anode, and the reference value of E0 for Cu(II)/Cu(s) for the role that copper plays in this overall cell reaction, determine the value of the standard potential for the half-reaction Zn2+(aq) + 2e- -> Zn(..
a chemistry student has made some stock 0.2 moll potassium permanganate solution. he wants to make 800 ml of 0.04 moll
When an ion-selective electrode for X was immersed in 0.0740 M XCl, the measured potential was 0.0310 V. What is the concentration of X when the potential is 0.0460 V
The freezing point of pure benzene is 5.5 Celsius and its freezing point constant is 5.12 C/m. Calculate the molecular weight of the unknown.
Using a sample of 30.0 mL of Kr(g), is at 25°C and 756 mmHg. Calculate the new volume if the temperature is decreased to -125°C and pressure is decreased to 325 mmHg .
ow many coulombs are required to produce 63.8 g of potassium metal from a sample of molten potassium
the hybridization of Carbon in this molecule? b) What would be its molecular shape? and c) What is the bond angle around the C atom?
The equation for the Beers Law- A= -log10 I/Io. Tell what each variable represents.
For benzene(C6H6), AE=30 and NE=38. Explain how the eight-electron deficiency is eliminated by the structure of the molecule.
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