Determine the volume of at stp of hydrogen gas
If 0.0425 g of Magnesium is reacted with an excess of hydrochloric acid, and determine the volume of at STP of hydrogen gas formed, and explain why it is important to equalize the water levels inside and outside the eudiometer?
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At 45*C an ice cube at 0*C was dropped into the 30 grams of water in a cup. At the instant that all the ice melted, the temperature of the water in the cup was 19.5*C. Explain what did the ice cube weigh?
What is the atomic radius of silver when the silver crystallizes in a face-centered cubic unit cell? A silver atom is at the edge of each lattice point. The length of the edge of the unit cell is 0.4086 nm.
Why the freezing point depression measurement of benzoic acid in acetone yields a molar mass of 122 g. This same measurement in benzene yields a value of 242 g.
At UCLA, 11% of all students come from outside of California. These students are typically assigned at random to live in campus housing. Student living in campus housing share common areas
Determine the volume of dry hydrogen formed at the STP if 44.00 mL of hydrogen is actually collected OVER WATER from the above reaction conducted at 22.0 C and 759.2 torr.
Explain what would the final temperature of the water resulting from the addition of 20g of steam at the 100(degrees) C to 80g at the 0(degrees)C?
A solution is made by dissolving the 0.40mol isopropanol (C3H7OH) in the 0.80 mol water. Determine the mole fraction of isopropanol?
A silicate mineral which is weighing 0.4700 grams gives an insoluble residue containing both Fe2O3 and SiO2 (159.7 g/mol) weighing the 0.2720 grams. Analysis of the residue shows it to contain 15.60% iron (Fe, 55.85 g/mol).
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