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1. Name at least two environmental threats to coral reefs.
2. What sort of relationship do the cleaning wrasse and cleaning shrimp have with their hosts?
A solution contains 2.0×10-4 M Ag+ and 3.6×10-2 M CO32-. Determine Qsp for Ag2CO3. Will Ag2CO3(s) precipitate? [Ksp for Ag2CO3 is 8.1×10-12]
When you are drawing Lewis structures, why are elements in row 3 capable of having an expanded octet (expanded valence shell), while the elements in row 2 are not capable of this
This solution was titrated with 2.95*10^-3 moles NaOH. How many moles of HCl consumed by compound? How many moles of NH3 is in sample?
What mass of SiC is formed from the complete reaction of 6.63 mol of carbon?
A weather balloon containing 605 L of He is released near the equator at 1.01 atm and 305 K. It rises to a point where conditions are 0.489 atm
Which of the following statements about natural radioactive emissions is incorrect?
Show how to perform the following dilution using mathematics and a brief explanation of the preparation procedure. How many mL of a 3M NaOH solution would you need to measure out and dilute to make 3L of a 2.5 M NaOH solution. How many mL of water ..
A sample of 24.0 g of helium (He, M = 4.00 g/mol) has a temperature of T = 108 K and a pressure of 2.86 atm. Assuimg the this sample follows the perfect gas law, determine the volume it occupies.
What is the molarity of the solution if 310 of the solution reacts with magnesium to produce 7.40 of gas measured at STP?
Explain the difference between cubic closed packed structure and a hexagonal closed packed structure.
on a smoggy day in a certain city the ozone concentration was0.50 ppm by volume. calculate the partial pressure of
Sucrose and glucose are nonvolatile. What is the mole fraction of water in this solution?
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