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VO2 can exist in insulating or metallic form, depending on temperature and pressure. Which form would be stabilized by increasing the pressure?
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
A student measures out 100.0 ml of 1.00 M HCl and places it in a styrofoam cup. The temperature of the HCl is 22.30C. She then addes 1.002 g of MgO to the cup.
Will the concentration of Ni2+ increase or decrease as the cell operatres? c. What is the initial concentration of Ag+ in the cell?
when liquid water is put into an evacuated vessel at 25 celsius what is the sign of the change in enthalpy, entropy, free energy, and temperature for the system during this process?
A 326 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 640. mmHg. Calculate the moles of Ar present.
What will be the velocity of the escaping electrons under these conditions? What is the de Broglie wavelength of the escaping electrons?
What mass of natural gas {rm{(CH}}_4 ) must you burn to emit 268 kJ of heat?
At a particular temperature, K=2.0x10^-6 mol/L for the following reaction: 2CO2 (g) at equilibrium with 2CO(g) + O2 (g) If 2.1 mol CO2 is initially placed into a 4.2 L vessel, calculate the equilibrium concentrations for all of the species.
Calculate the energy in joules and calories required to heat 40.0 silver (Ag) from 112 C to 270 C
The atomic mass in g mol of Fe=55.85, S=32.07 O=16, calculate the number of moles of the negative ions present in 7.45g of iron (III) sulfate.
How many grams of Au are there in the whole ocean? With a 60% recovery possible, how many liters of seawater must be processed for gold to obtain 1 kg of that metal?
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