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Ammonia gas can be prepared by the reaction of a metal oxide such as calcium oxide with ammonium chloride.
CaO(S) + 2 NH4Cl(s) 2 NH3(g) + H2O(g) + CaCl2(s)
If 147 g of CaO and 267 g of NH4Cl are mixed, what is the maximum possible yield of NH3?
Explain why the atomic mass of an atom is a decimal number and how that value was determined before being placed on the periodic table.
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
Calculate the heat evolved from a mixture of 14.6 L of sulfur dioxide at 1 atm and 294 K and 15 g of oxygen if the following reaction occurs: 2 SO2(g) + O2(g) ?? 2 SO3(g) ?H? = ?198 kJ
Both potassium chloride (KCL) and potassium hydroxide (KOH) are very soluble in water. However, as one increases the temperature of the solution, KCL becomes more soluble and KOH becomes less soluble. Explain
calculations of the sulfuric acid molarity if your average result from the titration of three 0.350 g samples is 15.72 mL. Please explain your answer in detail (words and calculations).
If 125 cal of heat is applied to a 60.0 g piece of copper at 25.0 C, what will the final temperature be? The specific heat of copper is 0.0920 cal/(g.C}) .
You are expected to design a car that works with photovoltaic panels. Assume that the driver is 75kg and the expected speed is 50km/hr.
What hybrid orbital would be expected for the central atom in each of the following: Draw the molecular structure of these compounds and label Ï? and Ï?bonds.
At a certain temperature, K = 9.1 10-4 for the following reaction. FeSCN2+(aq) Fe3+(aq) + SCN -(aq)
Ideally what should the ratio between the three slopes (AlCl3 slope= 483.0 , CaCl2 slope= 421.4, and NaCl slope= 181.9) be? What are your actual experimental ratios?
A 5.00-L reaction vessel contains hydrogen at a partial pressure of 0.588 atm and oxygen gas at a partial pressure of 0.302 atm. Which element is the limiting reactant in the following reaction? 2H2(g) + O2 (g) -> 2H2O(g)
Give the number of electrons, Protons and neutrons in 24NA and give the electron configuration of the following A: A1 B: F- (- is at the top)
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