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(1) What is the formula of a compound that crystallizes with fluoride ions occupying all of the tetrahedral holes in a FCC array of calcium ions?
(2) What is the formula of a compound that crystallizes with copper ions occupying one-half of the tetrahedral holes in a FCC array of fluoride ions?
(3) Suppose you wanted to make a compound that is isoelectronic with Ge. You replace 50% of the Ge atoms with Ga, and 25% of the other Ge atoms with As. Name an element (or elements) you could use to replace the final remaining 25% of the Ge atoms with to give you a compound isoelectronic with Ge.
If 158 of wet hydrogen is collected over water at 24 and a barometric pressure of 736 , how many grams of hydrogen have been consumed.
The solubility of benzoic acid in water is 6.80g per 100mL at 100 degrees Celcius. Calculate the minimum volume of water needed to dissolve 1.00g benzoic acid at 100o^C
Consider the following data. 2 Ca(s) + O2(g) 2 CaO(s) H = -1270.2 kJ C(s) + O2(g) CO2(g) H = -393.5 kJ CaO(s) + CO2(g) CaCO3(s) H = -178.3 kJ Use Hess's law to calculate H for the reaction below.
consider a mixture of air and gasoline vapor in a cylinder with a piston. the original volume is 40. cm3. if the
Diethyl ether is a volatile organic compound. The vapor pressure of diethyl ether is 401 mm Hg at 18°C and the Hvap = 26.0 kJ/mol. Calculate the vapor pressure of diethyl ether at 40°C.
A cannonball made of iron has a volume of 115 cm3. If iron has a density of 7.86 g/cm3, what is the mass in grams of the cannonball?
Suppose you have two joined metals (Gold and Copper(II)) immersed in 1 M HCl acid, based on the reactants present write possible half cell (anode/cathode) and full cell reaction(s).
A certain carbon-hydrogen compound contains 89.94% C by mass and the remainder is hydrogen. What is the empirical formula
307g of an unknown mineral is heated to 98.7 C and placed into a calorimeter that contains 72.4 g of water at 23.6C. the heat capacity of the empty calorimeter was 15.7 J/K. the final temperature of the calorimeter is 32.4C. What is the specific h..
What are the molality and mole fraction of solute in a 34.0 percent by mass aqueous solution of formic acid (CH3OH)?
Assuming efficiency of 26.70 %, calculate the actual yield of magnesium nitrate formed 139.4 g of magnesium and excess copper (II) nitrate. Mg + Cu(NO3)2 -> Mg (NO3)2 + Cu
Use a table of standard thermodynamic values to predict the standard cell potential at 81 C: Cu(s)|CuSO4||AgNO3|Ag(s) Assume that the values of delta H and delta S are independent of temperature.
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