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Butane gas is compressed and used as a fuel in disposable lighters and light-weight camping stoves. A typical lighter contains 5.50 ml of butane, C4H10 (d=0.579g/ml) A)What mass of oxygen is needed to burn the butane in the lighter completely? B)How many moles of CO2 form when all of the butane is the lighter burns? C)How many molecules of gas form when the butane in the lighter burns completely?
The hydrogen carbonate ion can act as both an acid and a base. Write out two equations which demonstrate this and calculate (or look up) the equilibrium constants for both expressions
Discuss how nitrogen, once fixed, enters into anabolic biochemical reaction pathways. Your discussion should include how it is eventually
delta H = -174 kcal/mol (-728 KJ/ mol) methanol for the process. How many kilocalories are released by burning 2.00mol of methanol? 3- How many kilojoules are released by burning 55g of methanol?
How many grams of the element nickel are contained in 10.0 g of a 10.2 wt % solution of nickel sulfate hexahydrate, NiSO4 . 6H2O (FM 262.85)?
calculate the external pressure that must be applied to seawater, 1.14 M total ion concentration at 10 degrees celcius if the maximum concentration allowed in the product water
How many grams of magnesium chloride must be dissolved in 568 g of water to give a solution that freezes at -2.38°C
The individual standard electrode potentials do not indicate anything about tendency to gain electrons. The cell potential of the entire cell does.
calculate the temperature (in EC) at which the vapor pressure is 760 torr. The vapor pressure of Ethanol is 115 torr at 34.9EC
What mass of NaCl must be dissolved in 65.0 grams of water to lower the freezing point by 7.50 °C? The freezing point depression constant, Kfp, for water is -1.86 °C/m
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
What is the mass percent of MgO in the mixture? Assume that only the MgO reacts with CO2.
The amount of energy needed to heat 2.00 g of carbon from 50.0 C to 80.0 C is 42.6 J. what is the specific heat capacity of this sample of carbon.
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