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Hydrogen fluoride is used in the manufacture of Freons ( which destroy ozone in the stratosphere) and in the production of aluminum metal. It is prepared by the reaction CaF2 + H2SO4 -> CaSO4 + 2HF
In one process 6.00kg of CaF2 are treated with an excess of H2SO4 and yield 2.86kg of HF. Calculate the percent yield of HF.
the flow of florida current through the straights between key west and cub is 150 x 106m3sec. the mass concentration of
If a 1.40g sample of any alkene is combusted in excess oxygen, how many moles of water will form?
Limesonte is another form of CaCO3. Sandstone is primarily silica or sand, SiO2. On the basis of observations made in today's experiment, explain a test that would allow you to distinguish between limestone and sandstone.
A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present
Acetylene gas (C2H2) is produced as a result of the following reavtion. CaC2(s) + 2H2O(l) yield C2H2(g) +Ca(OH)2(aq)
how do you find the specific heat of platinum if 23.6 grams is heated from 10.0c to 20.0c using 30.68 J of heat.
If the mass of water surrounding the calorimeter was exactly 1000 g and the heat capacity of the bomb calorimeter was 1.75 kJ/°C, calculate the molar heat of combustion of liquid methanol .
three mole of aluminum metal react with a mole of solid iron(iii) oxide to produce two moles iron metal and a mole of solid aluminum oxide
Find the solubility of CuI in 0.37M HCN solution. The Ksp of CuI is 1.1×10-12 and the Kf for the Cu(CN)2- complex ion is 1×1024.
What are the characteristics of a recursive algorithm in 8086 assembly language?
Classify each of the following as a Lewis acid or a Lewis base. Drag the appropriate items to their respective bins. H-, I-, Fe3+, NO2, SnCl4, CH3OH, (CH3)3N
Then the gas is cooled at a constant volume of 22.3L back to its original temperature. Then it contracts back at a constant tempurature to its original volume. What is the total heat flow for the process
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