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Identify the unknown gas. What is the mass of the solid NH4Cl formed when 73g of NH3 are mixed with an equal mass of HCI? What is the volume of the gas remaining, measured at 14.0 degrees C and 752 mmHg? What gas is it?
When 45.0 g of an unknown nonvolatile nonelectrolyte is dissolved in 500.0 g of water, the resulting solution freezes at -0.930 °C. What is the molar mass of the unknown substance? K f = 1.86 °C/ m for water.
Write three reactions for the oxidation of pyrite and explain how these can result in the production of acid waters that are enriched in trace metals and metalloids.
At 518°C, the rate of decomposition of a sample of gaseous acetaldehyde, initially at a pressure of 363 Torr, was 1.07 Torr s-1 when 5.0% had reacted and 0.76 Torr s-1 when 20.0% had reacted. If the reaction rate is prop ...
Write a reserch paper on Gas chromatography. This is a 10 pages research paper that should include an introduction on chromatography, principles of separation, type of columns, resolution, detection methods and applicati ...
Question 1 In contrast to going without food, the human body can survive only about __________ days without water. A. 3 B. 7 C. 11 D. 15 Question 2 Which of the following sources of water is most likely to contain contam ...
A 200 g sample of water with a temperature of 32?C is added to 50 g water at 55?Cin an insulated container. What is the final temperature after thermal equilibrium is reached? The specific heat of water in the liquid sta ...
Assume that coal is pure carbon with a density of 1280 kg/m3 and that the particle is spherical with an initial diameter of 0.015 cm. Air exists several diameters away 1) Nco= ____Noxygen 2) The more fraction of oxygen a ...
Calculate the magnitude of the diffusion-controlled rate constant at 298 K for a species in (i) water, (ii) pentane. The viscosities are 1.00 × 10-3 kg m-1 s-1, and 2.2 ×10-4 kg m-1 s-1, respectively.
Discussion 1: In this discussion, consider how fats are digested and utilized in the body. Address the following questions: What enzyme is necessary for fat digestion? Where is this enzyme produced and where does fat di ...
A 425-m 3 (15,000 ft 3 ) basin, equipped with 10 gas dispersers of a new design, is to be installed for stripping hydrogen sulfide, H 2 S, from wastewater. The dispensers, each to use air at a rate of 7:08 × 10 -3 m 3 / ...
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