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A homeowner uses 4.00 x 10^3 m^3 of natural gas in a year to heat a home. Assume that natural gas is all methane, CH4, and that methane is a perfect gas for the conditions of this problem, which are 1.00 atm and 20 C. What is the mass of gas used?
Write a balanced chemical equation for the reaction that occurs when metal M reacts with nonmetal X. Include state symbols for the reactants and products.
Molecular solid can be pictured as the collection of independent harmonic oscillators. (a) Starting with the expression for the partition function derive an expression for the vibrational heat capacity
Using the intermolecular bonding between H2O moleculesin it's two condensed phases (solid ice versus liquid water), explain the observed phenomenon that
Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide. CaCO3(s) CaO(s) + CO2(g)
Calculate the [Zn2+] in a solution of ZnC2O4 held at a pH of 3.00. Remember C2O4^2- is a weak base so you must consider other equilibria.
what is the pH of 1.0 L of a buffer that is .11M HNO2 and .150M NaNO2. what is the pH of the buffer after adding 1.0 mL of 12M HCl. pH of original buffer
How many molecules of water are produced when 143 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
What is the redox number for nitrogen in a molecule of nitrogen dioxide
A sample of a gas occupies 1.40 x 103 mL at 25oC and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg
What is the osmotic pressure, in atm, of a solution formed by dissolving 17.8 g of PbCl4 in 0.250 L of water at 64.4 oC? (R = 0.0821 L-atm/mol-K; 0 oC = 273 K)
What is the Ksp value for KHT at 10°C, 23.5°C, 35.0°C and 50.0°C?
equal masses of three different ideal gases x y and z are mixed in a sealed rigid container. if the temperature of the
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