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Air containing 1 mass % water is humidified by adding water. If air, dry basis, flows into the humidification process at 957.2 lb/hr and water flows at 0.7 cubic ft per hour, what is the mass fraction water in the humidified air?
Draw every stereoisomer for 1-bromo-2-chloro-1,2-difluorocyclopentane. Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other
What are the simple sugars of lactose, maltose and sucrose and why are some people lactose intolerant
1.50 mol of helium gas in a cylinder is held at a volume of 22.4 L by a piston at 273K and 1.00 atm. Heat is supplied to the system to double the volume and temperature of the gas while maintaining the internal pressure at 1.00 atm.
a female patient requires 2.70times10-2 grams of a sulfa drug then determines how many tablets should be given to her
how to do the Empirical Formula is confusing. The substance is Magneiusm Oxide with .16G. The mass of Magneisum is .12G
Write an equation for the Diels- Alder reaction of cyclopentadiene and 1,4 benzoquinone.
a sample of hydrogen gas initially at 29C and 7.0 L iscooled until its final volume is 2.9 L. What is its final temperature
Pure metals are commonly recovered from sulfide ores by successive processes of roasting in air (oxidation), dissolution in sulfuric acid and electrolysis (reduction). Consider the starting ore mineral sphalerite (ZnS). Write balanced chemical rea..
Compute the number of moles of sodium hydroxide ( NaOH ) in 23.75cm 3 of 0.150moldm -3
Starting with only the solid, it is found that at 40C the total gas pressure (NH3 and CO2) is 0.33 atm. Calculate the euilibrium constant Kp/
if 6.73 g of Na2CO3 is dissolved in enough water to make 250 ml of solution, what is the molarity of the sodiam carbonate?
Draw the structure of the intermediate hydroxyketone formed by the transfer of one hydride to benzil. Is the intermediate optically active. Explain.
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