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a. What is the percent by mass of water in iron(II) sulfate heptahydrate, FeSO4•7H2O (or what percent of the molar mass of FeSO4•7H2O is due to the waters of crystallization)?
b. What mass due to waters of crystallization is present in a 3.38-g sample of FeSO4•7H2O?
If the mobile phase flow rate is 0.4 m/min, what is the analyte linear migration rate, and how long is the column?
A closed end manometer was constructed from a U-shaped glass tube which was 80.0 cm high. It was loaded with mercury so that the closed side was filled all the way to the top
How does water turbidity affect the amount of dissolved oxygen?
When the three elements P, Cl, and As are arranged in order of increasing atomic radius, which is the correct order
under certain conditions the averagerate of appearance of oxygen gas in the reaction 2o3g --- 3o2gis .0012 atms-1. how
What are the three major steps involved in extraction of a metal after its ore is mined?
What is the boiling point of a solution that contains 6 moles of KBr in 1000 g of water? (K = 0.512 C/m)
Hydrochloric acid reacts with zinc metal to form zinc chloride and hydrogen gas. If 345.2 g of zinc metal reacts with 231.6 grams of acid. How many liters of hydrogen gas are produced? How many moles of zinc chloride are produced?
Someday, cars may be powered by clean H2/O2 fuel cells and electric motors. Under standard conditions, such a fuel cell can develop 1.229 volts. If the oxygen is obtained from air (at P=0.21 bar), what pressure of H2 would be required to develop 1..
Explain what d-electron configurations as well as spin states are characteristic of some of the most stable octahedral complexes. Why.
The molar heat capacity of silver is 25.35J/mol °C. How much energy would it take to raise the temperature of 9.80 of silver by 17.4°C
A student is given four solid samples labeled W, X, Y, and Z. All have a metallic luster. She is told that the solids could be gold, lead sulfide, mica (which is quartz or SiO2), and iodine.
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